2006 - Putzmeister

The Magazine for our Customers and Friends 67
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Contents Latest News
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4
Latest News
Putzmeister bids farewell to board
member Dr. Hartmut Benckert
Title Story
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Compact “four-arm”
with multiple strengths
Dam Construction
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High-rise
Between Madrid and Valencia –
the M 42-5 has a full schedule
Bridge Construction
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20
Practical Tip
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24
Background
15 PM DAISY® tracks down a stolen M 24
Application
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Side anchoring with compact
spray concrete pump
Stationary booms on launching gantries
Lapped or braided?
Attractive niche markets for the
TELEBELT ® telescopic conveyor
Technology
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Brutal concrete mixture
Small pin for great effect
New long-reach boom pump serves
historical exhibition halls
M 38-4, the big allrounder
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Putzmeister bids farewell to board
member Dr. Hartmut Benckert
At the end of June 2006, Putzmeister AG
said goodbye to its longstanding board
member Dr. Hartmut Benckert. Whoever
knows HB – as is his internal abbreviation
– will know that retirement is a long
way off yet. Instead, he is going to remain
“unretired” and active.
A multitude of Putzmeister innovations and
major technical breakthroughs over the last
25 years can be attributed to ideas and proposals
of the engineer who was born in
Husum, northern Germany, in 1946 and
grew up in Bremen. These include the forward
looking Free-Flow Hydraulics FFH
(1982), the computer-controlled highly
flexible handling system HFH (1986) and
the computer-aided and sensor-monitored
mobile SKYWASH robots. The know-how
behind these highly complex systems
would years later form the basis for the
joystick-controlled EBC Electronic Boom
Control and for the conception of other
ERGONIC modules. With the establishment
of the US PM subsidiary in the 80s
and 90s, Dr. Benckert faced an altogether
different challenge. The list of outstanding
technical achievements would soon include
the development of high-performance
concrete pumps, to which Putzmeister
owes much of its world records in high-rise
concrete pumping (most recently 532 m in
1994), and the series manufacture of the
largest PM truck-mounted concrete pump
with a vertical reach of up to 63 m (2005).
Following his studies (mechanical engineering,
aerospace engineering) and completion
of his dissertation at TU Stuttgart,
Dr. Benckert spent the next six years
working in turbine and power plant
engineering. In April 1981, he moved to
Putzmeister taking the role of assistant to
the Managing Director and PM founder,
Karl Schlecht. Some time later he became
test manager and, in 1988, was appointed
general manager of the Engineering division.
Since then, he has been responsible
for Engineering, Production, Quality
Assurance and Technical Services.
During the conversion in 1996 of the
former Putzmeister GmbH into the legal
form of public limited company, or
Aktiengesellschaft (AG), Dr. Hartmut
Benckert was offered an appointment to
member of the board. As part of the
establishment of the AG, it was also a
condition that the contracts of all PM board
members would expire in their 60th year.
For HB, this time has now come.
His colleagues have come to know him as
a meticulous and single-minded worker. A
large number of concrete pump operators
at home and abroad, who have for years
maintained close, personal contact with
him, hold in high regard his readiness to
think laterally and to resolutely implement
even unconventional solutions. “Hurricane
Harry” – as is his nickname in the USA –
took on technical challenges with relish.
And in ambitious developments he would
often identify a benefit where others would
only see the risks. Many of his ideas are
now patent-protected.
What did he enjoy most in all his years
with Putzmeister? The answer came swiftly:
“The freedom of expression that I had
here!” In his opinion, one of the greatest
challenges facing the company in the future
is the development of mechydronics, i.e.
the meshing, or symbiosis, of mechanics,
hydraulics and electronics with the aim of
being able to offer “intelligent” construction
machinery. What pleases him – and this
is also something in which he has personally
played a not insignificant part – is the
healthy growth of the company throughout
the years and the expansion of sites.
With his great commitment to PM AG, his
participation in a variety of associations
(more notably in several committees of the
German Engineering Federation VDMA
and as President of the Committee for
European Construction Equipment) and
voluntary activities in regional politics,
the private interests in HB's life had been
forced to take somewhat of a back seat.
This has changed since July, with Dr.
Hartmut Benckert finding more time for
his hobbies of cycling, riding and mountain
climbing. And he is looking to take on new
responsibilities in this new chapter in his
life, albeit in a different area to before:
“I'd like to try lending my experience to
economic policy!”
As a source of valuable experience,
PM AG also wants him to remain available
as a consultant.
He wishes his successor, Dr. Mehmet
Varlik, the best of luck and the courage
to meet the new challenges in a rapidly
changing environment head on, even if
the solutions happen to be unconventional.
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Title Story
Compact “four-arm”
with multiple strengths
By the end of 2005, Putzmeister AG had
announced the development of an
extremely compact truck-mounted concrete
pump with a 20-metre “four-arm”
boom. Even in the project stage, the combination
of minimal support width, lower
unfolding height, short arm segments,
flexible boom kinematics and a robust
pump assembly promised a fascinating
working machine.
Many construction sites, which previously
could only be supplied with concrete by
means of crane-lifted buckets, goods lifts
or wheelbarrows, were suddenly presented
with an interesting alternative. In addition,
the working range of this universal truckmounted
concrete pump is extended by the
delivery hoses and tubes carried in magazines.
The delivery of the first machines
began after the presentation at the trade fair
INTERMAT in Paris in April 2006. With
the following examples of application,
Putzmeister would like to take this
opportunity to present the new M 20-4 ZR
in typical construction site situations.
Restoration with lightweight concrete
In Heidelberg, buildings of up to 50 years
old at the Max Planck Institute for nuclear
physics are presently undergoing modernisation.
Also benefiting from the restoration
project is the adjoining Gentner laboratory.
The technology and air-conditioning
system of the building is located in a
separate room on the flat roof and is being
completely renovated along with the loadbearing
substructure by Bauwerk-Sanierung
Rhein-Neckar GmbH (BWS).
Since the ceilings could only be subjected
to low load for static reasons, it was only
possible to use lightweight concrete with a
specific weight of no more than 1,900 kg/m 3
for the foundation of the new technology
room. The BWS foreman said, “This
means we have 500 kg less ceiling load per
cubic metre concrete!” To deliver the lightweight
concrete (grain size 0/8 mm,
strength class LC 25/28) approximately
15 m high and up to 30 m wide, BWS
ordered a truck-mounted concrete pump
from Betonpumpendienst Rhein-Main
(BRM, Lorsch). The precondition was that
the machine would not only have to be
suitable for pumping lightweight concrete
but also be able to manage with the
restricted space on the Institute grounds.
BRM dispatcher, Walter Steiner, decided
that the new M 20-4 should take on the
task. With a maximum support width of
3.4 m forward and 2.5 m aft (i.e. inside
chassis width), there was still sufficient
space around the construction site for the
normal traffic of the Institute's members
as well as for the vans and light-duty
construction vehicles of the restoration
company. However, the crucial factor in the
decision to award the job to the compact
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Once the machine is set up, BRM operator, Horst
Sommer, regulates concrete output from immediately
beside the placement site
M 20 “four-arm” was the fact that it is
equipped with EPS hydraulic control.
The EPS module (Ergonic Pump System)
is standard equipment on the M 20-4 and,
unlike conventional hydraulic control
systems, regulates the functions of the concrete
pumps electronically. This makes it
possible to optimise the pumping process
in line with the prevailing conditions. The
The EPS system supports adjustment of the maximum
desired hydraulic pressure (and thus the concrete
pressure too)
changeover force of the transfer tubes, for
example, is adjusted to suit the consistency
of concrete. However, other important
parameters were also optimally matched by
the EPS computer, such as the slewing
angle of the S transfer tube, the delivery
rate of the hydraulic pump, the hydraulic
pressure and much more.
It was particularly helpful to limit the
conveying pressure to the desired value
given by the transmission ratio (i = 1 : 4.4)
on the display itself. The setting is easily
made using the rotary selection knob. For
example, for a desired conveying pressure
limit of 30 bar, a hydraulic limit of 132 bar
must be set.
132 bar
30 bar conveying pressure x 4,4 =
hydraulic pressure
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The lightweight concrete flows at maximum rate from
the ND 65 hoseline
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Caution: lightweight concrete!
The pumping of lightweight concrete demands
the utmost attention of the machine
operator. This is because most lightweight
aggregates (swelling clay granulate) are
porous and absorb water and concrete fines
under pressure. As this causes discontinuity
in the lubricating film on the inner wall
of the tube or hose, the properties of segregation
and therefore blockages are preprogrammed.
An increase in the conveying
pressure would result in the blockage being
further compressed and it would remain
blocked. The following tips should help to
avoid problems in the pumping of lightweight
concrete:
■ Check whether the aggregates have been
prewatered in the concrete factory
■ Increase the mixing time. The duration
depends on the type of admixture. It is
two minutes for the addition of polycarboxylate
ether (PCE), for example.
■ Start pumping with considerably more
grout than with standard concrete.
There must be sufficient lubrication
over the entire length of the line.
■ Only pump at low output
■ Specify the lowest possible maximum
pressure using the EPS system
Particularly favoured is, incidentally, the
use of the rotor pump system for delivery
of lightweight concrete that Putzmeister
offers not only for PUMI ® truck-mixer concrete
pumps but also for truck-mounted
concrete pumps with booms with a vertical
reach of 28 m. The reason for this is the
system's inherently low conveying pressure
(max. 25 bar) and the highly uniform delivery
of the rotor with only low pressure
peaks.
The advantage of lightweight concrete – in
addition to its low deadweight – is also its
low thermal conductivity. A disadvantage
of this material is the elasticity module that
decreases disproportionally with bulk
density. Lightweight concretes with bulk
densities of between 800 and 2,000 kg/m 3
are the norm today. However, the bulk
density of unhardened, pumpable lightweight
concrete should not be below
1,800 kg/m 3 (corresponds to bulk density
class 1.6). The fines being of natural sand
is also important to the pumpability of the
concrete. The technically possible, lower
weight threshold for lightweight concrete
is currently around 350 kg/m 3 .
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Title Story Title Story
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Boom as pipe bridge
In Zürich-Müllingen, the Swiss Post is
having its distribution centre, built in 1985,
converted in wide sections for around CHF
110 million (approximately 70 million
euros). Concrete was delivered into the
lightweight false ceilings by a flexible
M 20-4, firstly through the boom pipework
and then a 130 m long hoseline.
To increase the effective area, the extensive
construction measures also include putting
in large false ceilings in the high rooms.
These photos were taken as one of the
ceiling formworks measuring 1,600 m 2
was being filled with 250 m 3 of concrete,
strength class C35/45. A highly modern
letter distribution centre will be commissioned
here on completion of the work.
The new M 20-4 of a 3 Betonpumpen AG
(Affoltern) was deployed for this application
for various reasons: on the one hand,
the space available was perfectly adequate
for setting up the machine; on the other
hand, the “four-arm” boom could be fed
through any of the desired window openings.
Furthermore, the machine operator
had a sufficient number of hoses on board
to still be able to fill the ceiling formwork
deep within the room. The total extension
was eventually 130 m.
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Narrow roadway, plenty of support
On the outskirts of Munich, the municipality
of Ottobrunn is having a new communal
services industrial park, including extensive
commercial premises, built on the grounds
of a former airport for 2.7 million euros.
In addition to the buildings, warehousing
structures and workshops, the construction
project also includes permanent spaces for
the comprehensive fleet of vehicles. Due to
the relatively high surface load – this area
is used for the parking of HGVs, road
sweepers, snow ploughs, etc. – a concrete
of somewhat higher strength (C30/37) is
required. The narrow yet long sections
measuring 50 to 100 m 3 are being concreted
by the new M 20-4 of BFM (Betonförderdienst
München GmbH Co.KG). Since
roadways with a width of more than just
3.5 m for supporting the truck-mounted
concrete pump are few and far between, the
M 20-4 was a natural first choice.
Space enough for oncoming traffic
Even weeks after the event, machine
operator Bernd Blöhe remembers well one
of the first times his new M 20-4 was put
to use. “Man, that time in Feldmoching
was a close call…” says the Berlin-born,
Betonförderdienst München (BFM) machine
operator who has lived in Bavaria
for over 15 years.
The reason for this “lasting memory” was
the search for a suitable set-up area for the
BSF 20.09 H that was employed first a few
days before. Now, this machine does not, in
fact, require very much space at all, but
even its minimum (support width front
3.4 m, rear only 2.5 m within the vehicle's
surface area) did not appear to be available.
Before we go into more detail here, we
should first get a general idea of the construction
site conditions. The order of the
Deutsche Bahn AG commissioned the
restoration of an extremely busy railway
bridge for regional and cross country traffic,
including the two side wing caps. The
bridge spans a similarly hectic through
road, which has been closed off on one
ca. 3.5 m
The width of the roadway is enough for the M 20-4 to support itself Placement of concrete in the bottom formwork
side for the duration of the construction
work. Traffic lights control the traffic,
which is only able to move along the single
free lane. The other lane – the width of
which is not even 2.8 m – is required for
the erection of the construction site. At the
same time, this happens to be the only setup
site for a truck-mounted concrete pump
in the entire surrounding area.
Machine operator, Blöhe, parks the 2-axle
vehicle in the closed lane in such a way
that the foot of the right-hand forward
support leg, with a support plate for an
underlay, is positioned precisely on the
white centre line marking, which is approximately
10 cm wide. This may sound unbelievable,
but every centimetre counts in
these conditions. On the left-hand side of
the truck, things get trickier: because the
tyres of the machine are already in contact
with the kerb, the support foot must find
space to rest half on the narrow verge, half
on the embankment. In addition to the
support plate, adequately dimensioned timber
blocks ensured the safe set-up of the
machine. Bernd Blöhe: “Well, then I raised
the arm assembly, unfolded the four-arm
boom and it was then the mixers' turn!”
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Oncoming traffic has free passage
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Title Story Title Story
M 20-4 as rotor pump
On this construction site, too, it was only
possible to work with truck-mounted concrete
pumps that could find a support area
between palettes, cranes, construction
materials, skips, a pit across the way and
craftsmen parking their vehicles. This is
because the actual construction site road
has to remain clear for construction
vehicles and delivery traffic.
The company responsible for the building
carcass had ordered the BSF 20.09 H as a
pure rotor pump to deliver two or three
mixer loads of fine concrete for the floor
into the basement of one of the new builds.
To be able to reach all basement rooms of
the house, the machine operator requires a
hoseline of 80 m (ND 65) in total as an
extension up to the placement site. To
create the transition from the hopper outlet
to the hoseline, the M 20-4 carries three
reducers on-board: a relatively short
adapter for the transition from the hinged/
pivoting elbow to the standard delivery line
cross section (Ø 150/125 mm); another for
adapting to the smaller diameter of the
3-metre extension tubes (Ø 125/100 mm)
carried on-board; and a relatively long
reducer for the transition to the ND 65
hoses.
Fitting the reducers only takes a matter of
minutes. In the meantime, the co-workers
on the construction site brought some of
the 16 hoses into the basement and connected
them together using quick-release
couplers. The other delivery hoses run
overground; these, too, are joined together
with a small number of handles and connected
to the final reducer. Then it's all
hands to the pump!
The construction site is blocked off in all directions, yet the M 20 “four-arm” still finds space
Reducers for the ND 65 delivery hoses are connected to the hinged elbow pivoted through 180°
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Connection of the extension line to the boom tip
Concrete placement in the 2nd row
In the Munich district of Laim, the new
M 20-4 of JUMBO pumping services is
pumping concrete not only through the
boom pipework, but also through an extension
line connected to it. Around 200 m 3
is to be placed from 10.30 am onwards.
The construction site is situated more or
less in the 2nd row: an unfavourable location
set behind the actual road-side buildings
that “normal” truck-mounted concrete
pumps with placing boom would find
difficult to reach.
The grounds are home to the development
of 46 private apartments, a retail outlet and
underground parking levels. Being concreted
today is the 40 cm-thick basement garage.
Site manager: “We can't set up conventional
boom pumps here without blocking the
road or the pavement. And because our site
is on Fürstenrieder Straße, a road with six
lanes, we can't just move the pavement
onto the other side of the road like that
either!” Yet the M 20 four-arm does
manage to find space for a set-up area
measuring – with maximum support – just
3.4 m by 8.8 m between the extremely
busy road and the walkway. The support
legs are lowered and the boom stretched
out to the side in no time. The nine, 3-metre,
ND 100 pipe sections and the three extension
hoses (5 m) are routed and connected
to the boom tip with the help of the site
personnel within minutes. The machine
operator exchanged the end hose for a
normal 3-m delivery hose with spout beforehand.
The machine operator fits a suitable
reducer between this delivery hose
(Ø 125 mm) and the first pipe section
(Ø 100 mm), and between the delivery pipe
(Ø 100 mm) and the hoseline (Ø 65 mm).
In this way, the compact M 20 is able to
achieve the horizontal working range of a
long-reach boom pump in the 60-metre
class. As the truck mixers arrive through
the traffic without delay, concreting of the
ceiling formwork is already complete by
the early afternoon.
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Concrete placement takes place far behind the front of the buildings
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Dam Construction High-rise
Side anchoring with compact
spray concrete pump
Small-scale construction machinery has
authorised access even on the largest of
construction sites. For even where ground
conditions are difficult, they are mobile,
easily repositioned and up and running in
a short space of time. This is demonstrated
by this application report from south
east Asia on a Putzmeister spray concrete
pump.
In Laos, one of the poorest countries in the
region, the harnessing of water power to
generate electricity is playing an increasingly
important role. The country needs
the electricity not only to supply its own
population and domestic industry on the
one hand, but to export it for currency
earnings on the other. The income earned
will mainly be used to fund the expansion
of the Laosian infrastructure. The main
consumer of the power supply is neighbouring
Thailand, which has been supplied
with electricity from the Nam Ngum 1
water power station since as early as 1971.
More hydroelectric power stations have
been built in the country in the meantime
and work on the current major construction
site of Nam Ngum 2 – also in the catchment
basin of the Nam Ngum River – is
making progress. The reservoir dam project
essentially comprises a 169 m high arch, a
hydroelectric power station with an output
of 615 MW and two 1 km long head race
tunnels each measuring 12 m in diameter.
Nam Ngum 2 is being built under a contract
awarded to Thai construction firm, Ch.
Karnchang, as the principle contractor. The
costs of the project run to around US $ 830
million (approximately 654 million euros)
and completion is scheduled for 2011.
Uniform spray of concrete anchors the mountainside
Before the valley is flooded, the loose
rocks on the relatively steep mountain sides
must be prevented from causing a possible
landslide. These areas are anchored using
spray concrete. For this purpose, Ch.
Karnchang employs two small, hydraulically-controlled
Putzmeister P 715 TD piston
pumps, which regulate the synchronised
addition of the hardening accelerator by
means of separate metering devices. The
P 715 TD model is essentially equivalent to
the earlier BSA 702 D PM fine concrete
pumps and achieves a pump output of up to
18 m 3 /h.
The P 715 TD concrete pumps have a
piston stroke of over 700 mm, a delivery
cylinder diameter of 100 mm and are
driven by a 30 kW diesel engine (electric
motor as an option). Of course, they can be
used not only for concrete spraying but
also for the delivery of concrete through
piping and hoses. The maximum grain size
in the concrete should not exceed 16 mm
with this application. The solution for
cleaning the actual core pump and hopper
is exemplary: through the side-mounted
flaps on the upper section of the hopper,
there is access to all areas that have come
into contact with concrete by the time
pumping is over.
Meanwhile, the Thai construction firm, Ch.
Karnchang, based in Bangkok, operates a
small fleet of PM machines: in addition to
the two P 715 TD fine concrete pumps, the
firm also works with three S 5 mortar
pumps, a large BSA 2110 HP-D highpressure
concrete pump and a MXR 32
stationary boom.
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Truck mixers fill up the small P 715 concrete
spray pump
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Between Madrid and Valencia – the M 42-5
has a full schedule
Even the Spanish pumping services – who
in recent years have been known mainly
as users of long-reach-boom concrete
pumps in the 50 and 60-metre class – are
showing an increasing interest in the new
M 42 “five-arm”.
The first machine of this model for Spain
was delivered in May to Emipesa S.A., a
company that, in addition to truck-mounted
concrete pumps, also operates concrete,
mortar and stone breaking works and a
gravel pit. Emipesa's site is located in the
Province of Teruel between Madrid and
Valencia.
After the machine operators had been given
introductory instructions by engineers from
the PM subsidiary, Putzmeister Iberica, two
of the “right kind” of construction sites
eagerly awaited the new M 42-5. One of
these construction projects was an apartment
block for 57 homes in Teruel (requiring
around 1,800 m 3 of pumped concrete),
the other a smaller, three-floor hotel in Mas
de Andrés, not far from the Emipesa headquarters.
In this case, the top floor had yet
to be concreted. Even for weeks ahead, the
dispatch office in Teruel had been inundated
with orders for the new M 42-5.
Machine operator, Raúl Jarque, appeared
extremely satisfied with his new “five-arm”
at the end of day one. It was the flexibility
of the boom and the ease of use that
appealed most.
High and wide – a “five-arm” boom adapts to the most varied of building profiles with ease
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Bridge Construction
Stationary booms on launching gantries
Since mid-2004, the Hungarian government
has made the expansion of infrastructure
its top priority. By the end of
2006, the country's motorway network
will have almost doubled in length from
700 km to around 1,200 km. The projects
of prime importance include the completion
of the M7 motorway from Budapest to
the Croatian border. Four stationary
Putzmeister placing booms and two PM
concrete pumps are also there to help with
a demanding bridge construction en
route.
On the southern shore of Lake Balaton,
construction of the spectacular Köröshegy
bridge project along a section of the M7 is
underway. On completion, this valley
crossing will be the longest land bridge in
Central Europe. The main contractor for
the project is the Hungarian construction
firm, Hidepito RT (Budapest).
The new motorway viaduct is supported on
16 conically tapered pillars reaching
heights of up to 80 m. Wall thicknesses
therefore decrease with increasing progress
in the construction. Each of the pillars are
topped with 6 m long, 23 m wide, 7 m high
hammer heads that have been concreted in
three sections. Several PM truck-mounted
concrete pumps with vertical reaches of up
to 36 m were present for months to participate
in the concreting of the pillars, including
foundations and heads. The machines
were connected to risers for the maximum
heights of delivery.
The bridge superstructure is created in 11 m long sections using launching gantries
60 m of concreted superstructure in each
direction
Hidepito is creating the 1,872 m long, 23 m
wide and up to 7 m high superstructure
section by section using two launching
gantries. On each of the four service girders
– there are two in each direction of travel –
there is a formwork carriage and a stationary
PM MX 28 concrete placing boom.
The stationary booms are connected by
cruciform base to the girders and are filled
with concrete by two BSA 1409 D stationary
concrete pumps through 150 m long
delivery lines. The two stationary pumps
generally operate in parallel and are relocated
from one side of the valley to the
other in unison. In segments approximately
11 metres in length, the team of Hidepito
concretes the substructure for 60 m in both
directions emanating from the hammer
head. Around 400 m 3 of concrete (C45/55)
is demanded of the BSA pumps per section.
The Putzmeister delivery lines (SK 125)
have additional insulation to ensure
trouble-free operation during the cold
winter months and the hot summer.
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The bridge builders concrete the segments
of the superstructure in two steps: first the
floor slab and footbridges are cast, then the
viaduct floor slab and cut-outs are created.
Around ten to twelve days are required to
manufacture a segment.
The valley crossing at Köröshegy is part of
a 15 km long motorway section that includes
three bridges, the construction costs
of which are reported to be 258 million
euros. The foundation work began in
September 2004; completion is estimated
for mid-2007.
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Bridge Construction
The 150 m long delivery lines are well
insulated against the heat and cold
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Practical Tip
Lapped
or braided?
Delivery hoses must be flexible, must not
wear too quickly, and yet they must still
be able to satisfy the requirements of
pressure and burst resistance. It goes
without saying that the purchase price
of the hoses should also represent good
value. Careful though – like some car tyre
bargains, cheap delivery hoses often end
up being an expensive purchase.
Car tyres and delivery hoses share common
ground: both have a carcass (usually made
of steel mesh) and a wear layer made of
abrasionproof rubber. While the structure
of the carcass is critical to driving
characteristics (tyre) or pressure resistance
(delivery hose), the thickness of the rubber
layer, among other factors, is decisive to
the service life of the tyre or concrete delivery
hose. With car tyres, it is radial tyres
(steel breaker tyres) that have long since
found general acceptance due to the improvement
in driving characteristics that
they offer by comparison with diagonal
tyres. With concrete delivery hoses, the
more practical of operators will similarly
opt for the high-quality design with braided
steel wire reinforcement. What with the
expensive costs of manufacture, these
hoses naturally have their price.
Supposed bargains are regularly turning
up on the market. As part of its product
monitoring, therefore, the Putzmeister Parts
Service arranged for Contitec to carry out a
closer examination of the concrete delivery
hoses from what at first glance appeared to
The braiding of fine steel wires around the inner hose is
complex and is only possible with the right technologies
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PM 3786 GB
be a value-for-money manufacturer. As
early as the pressure test, the naked eye
could see that the third-party product
deformed noticeably even before the manufacturer's
specified concrete pressure had
been reached. The material inspection then
confirmed the first impression. We have
listed the result of the material inspection
in the table above. The inspected hoses
were SK65, 5-metre hoses.
The production of Putzmeister delivery
hoses is highly complex and the fruit of
long experience. While the hoselines consist
entirely of rubber and the bushes on the
outside, the internal structure is substantially
more involved: with the PM hoses, a
network of steel wire is braided around the
inner hose, which is made of 6 – 7 mm
Third-party product PM delivery hose
Total wall thickness 10.5 mm 12.0 mm
Inner rubber layer 4.5 bis 5 mm 6.5 mm
Outer rubber layer 1.8 mm 2.5 mm
Steel wire reinforcement lapped braided
Tensile strength 14.5 MPA 24.0 MPA
Bending radius 500 mm 350 mm
Stretch at break 365 % 495 %
40
thick rubber material. The inspected hose
of the competition, on the other hand, had
only a lapped steel reinforcement. Hoses
of this construction are indeed more costeffective
to manufacture, but a lapped steel
reinforcement needs considerably more
space than a braided one. This is compensated
for by a thinner rubber layer, which
reduces the service life of the hose.
The outer layer of a Putzmeister hose is
usually a 2.5 mm thick sprayed-on jacket
that protects the hose from external
damage. There then follows the banding
of the basic hoses and their vulcanisation.
To prevent the formation of uneven areas
when joining the galvanised and tempered
bushes to the inner wall of the hose, the
PM hoses are stripped of their casing in
these areas as this serves to drastically
reduce the risk of blockages. As a consequence
of the thinner inner and outer layer
alone, the alternative hose would have to
be approximately 30 % cheaper, which was
not the case.
41
42
The theft of truck-mounted concrete pumps
was even easier at one time… This is what
one – or several, we still don't know –
sticky-fingered individual must have learned
at the beginning of June when he gained
access to the secured premises of the TBG
concrete mixing plant in Tagewerben
(Halle/Leipzig area) in the middle of the
night, broke into a BSF 24.11 H truckmounted
concrete pump and drove it away.
Background
PM DAISY ® tracks down a stolen M 24
The theft was noticed the next morning
when driver, Falk Berger, wanted to drive
his truck to the first pumping operation of
the day. The police were called, the theft
reported and a search called out for the
missing M 24-4. Meanwhile, the
Tagewerben concrete works informed the
dispatch office of TBG Betonpumpendienst
Berlin of the theft of the concrete pump
stationed with them. From central dispatch
in Berlin-Hoppegarten, all TBG concrete
pumps in Brandenburg, Mecklenburg-
Western Pomerania, Berlin, Saxony,
Saxony-Anhalt and Thuringia received
their orders. Back-up also came in the form
of the PM DAISY ® XP fleet management
system.
The data and information system (DAISY ® )
was developed by Putzmeister back in the
90s for the management accounting of concrete
pumps. It networks important information
and operational data between the
dispatch office, the truck-mounted concrete
pumps and their operators. PM DAISY ®
offers such functions as the complete re-
cording and processing of orders for the
truck-mounted concrete pumps, on-time
billing and driver payroll bonus accounting.
In addition, an integrated map system in
connection with GPS (Global Positioning
System) makes it possible for itineraries to
be planned and visually displayed. Even
hundreds of miles away, the headquarters
therefore has precise information about the
present site or set-up location of its trucks.
Since this time, the bulk of the 1,700
registered truck-mounted concrete pumps
in Germany are managed using PM
DAISY ® XP. Furthermore, approximately
15 % of all concrete pumps are linked to
their central dispatch via the on-board
computer.
43
The stolen BSF 24.11 H
truck-mounted
concrete pump
Satellite-supported data exchange
The M 24 thieves really ought to have
planned their job better – they obviously
hadn't reckoned with the GPS location
capabilities of the dispatch office of TBG
Betonpumpendienst Berlin (all the
company's pumps happen to be equipped
with GPS). Thanks to the satellite-supported
data exchange between the PM DAISY ®
XP on-board computer and the dispatch
office of the pumping service, the location
of the truck-mounted concrete pump would
soon be clear. The accuracy is comparable
with that of a navigation system. Andreas
Keiser, authorised signatory at TBG
Betonpumpendienst Berlin: “We were able
to zoom right down onto the truck to a
scale of just 15 m!”
The GPS data led to a large outbuilding
on a farm near Salzwedel, approximately
250 km from the operating site of the
M 24. Within around eight hours of the
theft being discovered, machine operator,
Falk Berger, and his colleague, Frank
Thiem, had tracked down the stolen truck
and contacted the police. And of the
thieves? Not a trace. The only evidence
they had left behind was yet a second –
also stolen – truck-mounted concrete pump
on the farmstead, and the assemblies of a
third. The investigating authorities meanwhile
assume that the stolen property was
to be shipped out of the country from
Hamburg at an opportune moment.
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15
PM 3786 GB

16
PM 3786 GB
Application
Attractive niche markets for the
TELEBELT ® telescopic conveyors
The Swiss have always been technically
sophisticated, and not only when it comes
to the accuracy of precision mechanical
timepieces. Construction machine operators,
too, have concrete ideas of what their
machinery and equipment must be
capable of delivering when used on construction
sites between Basel and Lugano.
The criteria, for example, are versatility,
minimal space requirements due to the
chronic restrictions in Swiss inner cities,
and safety and simplicity in operation.
The TELEBELT ® TB 110 with a horizontal reach of 32 m
46
a 3 Betonpumpen AG is one of the companies
that closely examines the potential
of a new acquisition before committing to
an investment. With around 30 employees,
the company domiciled in Affoltern
operates 13 PM truck-mounted concrete
pumps with boom vertical reaches of up to
46 m as well as several stationary concrete
pumps and MX placing booms. “In construction,
there are still plenty of materials
other than concrete that often cannot be
pumped,” says Gery Schär, the managing
director of a 3 .
Pneumatic conveyor as forerunner for
bulk material transport
This is why, for some years, the company's
fleet has included three pneumatic conveyors.
With compressed-air assistance,
these machines serve to transport a variety
of materials including lightweight and lean
concrete and all sorts of bulk materials,
such as sand, grit, gravel, crushed stone,
granulate, etc. The pneumatic conveyors
are manufactured in small-volume production
by Swiss PM representative, Pumex
(Winterthur). Acting as the machines'
working arm is the boom of a truckmounted
concrete pump. The conveying
technology is based partly on the knowhow
that Putzmeister gained from the
MOCOPCO system (Mobile Concrete
Pneumatic Conveyor) in the 90s.
45
However, the output of the pneumatic conveyors
is – depending on the material –
limited to no more than around 30 m 3 /h.
And, due to the line cross section, it is only
possible to deliver grain sizes of up to
32 mm in diameter. With the desire to
notch up the capacity of these “carry-alls”,
a 3 Betonpumpen AG had for a long time
shown a keen interest in the TELEBELT ®
telescopic conveyors. The machines are
built by the PM subsidiary, Putzmeister
America. The specialists of a 3 gained their
first experience with a hired machine. In
June 2006, the company put their very
own, first TELEBELT ® into service; a
second would be delivered in August.
High-capacity telescopic conveyor belts
TELEBELT ® is a multiple-telescoping conveyor
belt system onto which the conveyed
material is transferred by a feed conveyor –
there is one on-board. Three models are
available (TB 80, TB 110 and TB 130)
with a horizontal reach of 24 m, 32 m and
38 m respectively. The telescopic conveyors
are built on a 3 or 4-axled truck
chassis. The near 45 cm wide conveyor belt
of a TELEBELT ® can – as with the pneumatic
conveyors – transport every conceivable
type of bulk material, horizontally or
vertically, – be it sand, grit, gravel, crushed
stone, compost, substrate for roofscaping,
or relatively dry or lean concrete mixtures.
But these machines are significantly more
powerful (capacity max./theor. 275 m 3 /h)
and are even able to convey grain sizes of
100 mm. Their favoured applications are
therefore to be found in civil engineering,
dam construction, railway construction and
horticulture and landscaping.
Incidentally, with the new TELEBELT ®
generation, the feed conveyor on the work
site can be raised, swung to the side and
lowered hydraulically by radio remote control
(“active feeder”). With the older
machines, the feed conveyor was “piggybacked”
by the main belt and set down to
one side. In addition, the reversing function
of a 3 's TB 110 is an interesting item of
optional equipment: it allows the conveyor
belt to be reversed, making it also possible
to use the TELEBELT ® for tasks such as
clearing away old gravel or substrate
materials.
Access all areas
One of the first times the new TB 110 of a 3
Betonpumpen AG was put to work, things,
as expected, had become crowded. The
machine had to be set up in the middle of a
residential area not far from the centre of
Dump trucks load the feed conveyor of the TELEBELT ®
with gravel the size of a fist
The telescopic conveyor fills the cavity between slope
and basement wall with pin-point precision
Zürich. Cars would come to park on both
sides of the busy street. Right in front of
the construction site, a couple of metres of
space was left free for the TELEBELT ® and
its “out and down” supports, which – in an
extraordinarily space-saving manner – are
only extended and lowered perpendicular
to the direction of travel. As soon as the
feed conveyor is lowered and the main conveyor
brought into position, tippers begin
to load the gravel - sometimes as big as a
fist - onto the feed conveyor. A hopper
mounting prevents the material from
dropping onto the road during the transfer.
The purpose of the gravel (approximately
60 m 3 ) is to fill a cavity between the outside
wall of a new build's basement and
the hillside at the back. The architect res-
47
Application
ponsible insists on it as an effective drainage
layer. The gravel will then be topped
with a pouring of recycled concrete granulate
(10 m 3 ). How else would they have
brought the gravel (size approximately
30 x 50 mm, but often with particle oversize
too) and the subsequent broken recycling
material to the back of the construction
site? With the wheel loader? This
would have been impractical given the lack
of approach. With the concrete pump?
Impossible... the bulk materials were loose
and dry. By crane-lifted buckets or wheelbarrow?
This would have taken too long. In
the opinion of the construction team, there
could simply be no option more viable than
delivering and placing the material with
pin-point precision by TELEBELT ® .
During the course of the morning, the
TELEBELT ® operator receives a message
from headquarters on the DAISY ® onboard
computer. For not only are all of a 3 's
truck-mounted concrete pumps and compressed-air
conveyors managed using the
data and information system, but so too the
new telescopic conveyor. The machine is
ordered on to the next construction site,
which is located in Bremgarten, approximately
20 km west of Zürich. Here it is
needed to deliver concrete with a high
steel fibre content (40 kg/m 3 , length of pins
65 mm) for a warehouse floor. Under ideal
conditions, i.e. feasible grading curve,
matching cement percentile (additionally
around 30 kg/m 3 ), not too low a w/c value
etc., it would normally have been possible
to have had this steel fibre concrete
pumped. But conditions are not always
exactly ideal. Gery Schär: “With the aggregates
that we have in the concrete here, the
maximum we can pump is a steel fibre
content of 35 kg/m 3 !” To the TELEBELT ® ,
the high steel fibre content, the long pins,
the type of aggregates and a low w/c value
are completely inconsequential.
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PM 3786 GB
Technology
New long-reach boom
pump serves historical
exhibition halls
In Köln-Deutz, Hochtief Construction AG
is converting the old exhibition halls on
the banks of the Rhine into a modern
office and media centre. While the
historical brick façades have been retained,
Cologne's largest office project
makes progress behind the outer walls.
Both the coring of the old building and
the excavation work require a combination
of experience and instinct.
The concreting of the expansive, up to
1.5 metres deep foundations, walls and
floors requires truck-mounted concrete
pumps with a long working reach. Of the
concrete's 140,000 m 3 total volume, around
one third is being placed by machines of
BEKA-Betonförderdienst GmbH (Kerpen).
BEKA is favouring the use of its new
Putzmeister M 62 “six-arm” in the
former exhibition halls. The machine is
equipped with a large 200 m 3 /h core pump,
making the concreting of the formwork
sections, which on this site have a typical
volume of up to 1,800 m 3 , a speedy process.
An older M 52-5 offers occasional
assistance.
Around a half of the gross floor space
measuring over 200,000 m 2 has already
been let to RTL, Europe's largest commercial
television broadcaster. The reason
behind this is that the TV company would
like to relocate the German headquarters of
the holding company to the historical halls
and gather under one roof its businesses
scattered across several locations in
Cologne.
The listed Rheinhallen 1 – 5 with their
expressionist façades were built between
1924 and 1928 on the order of Cologne's
mayor of the time, Konrad Adenauer.
Additional annexes were built in the
1970's, but these have since been torn
down as part of the modernisation work.
The 200 m 3 unit of the BEKA M 62-6 pumps just the
right amount
After swinging out briefly, the forward telescopic support of the
PM long-reach boom pump extends directly to the support point
49
50
The floor slab is up to 1.5 m deep
Technology
51 52
Concentrating on the task at hand, machine operator,
Joachim Böhme, controls the placing boom of his
M 62-6 into position over the formwork
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20
PM 3786 GB
Bridge Construction
Brutal concrete mixture
Following the completion of the Three
Gorges Dam and commissioning of the
5,000 m high railway to Tibet, China
now has everyone talking about another
spectacular construction project.
The Sutong bridge across the Yangtzekiang
(also known as Yangtze) inspires so many
superlatives that only the key facts need be
listed here: its span makes it the longest
cable-stayed bridge in the world. It has an
overhead clearance of 62 m and is flanked
by enormous pylons. Together with the
approaches and departures, the 8,206 m
long bridge construction, which rests on
more than 140 pillars and was created
using launching gantries, spans the
Yangtzekiang River, which can swell to a
width of 14 km in places depending on the
time of year. But to get to the point: the
concrete placed here forces the concrete
pumps to the very limits of their performance.
A boat ferries site personnel to one of the two pylons far out on the Yangtze
To allow the passage of container ships, a
bridge section with a span of 1,088 m is
freely suspended by two 306 m high
pylons. The new bridge is located approximately
280 km to the east of Nanjing and
around 100 km to the west of the Yangtze
estuary. In the highly industrial province
of Jiangsu (approximately 74 million inhabitants),
the 6-lane water crossing establishes
a link between Nantong City and
Changshu. The bridge construction was
deemed a necessary investment given the
annual 15 % increase in the volume of
traffic across the mighty river.
The pylons stand on sturdy concrete foundations,
which are anchored in the bedrock
122 m below the river bed. Pontoons acting
as working platforms are anchored around
foundations for the duration of the construction
phase. They are also home to the
mixers and stationary concrete pumps.
54
Model of the enormous Sutong cable-stayed bridge
Grit, granite and a low w/c value
The pylons are made of an extremely dense
reinforcement and high-strength concrete
(C80). A great deal is expected of the concrete
pumps in the task of delivering the
concrete through the risers: the grading
curve is unbalanced; the fines currently
consist of open-pored, ground slag; a sharp
grit is used for a grain size of 4 mm; the
largest aggregates (5–25 mm) are made
exclusively from extremely wear-promoting
granite; and the w/c content even
reaches the value of 0.34. Then mix in the
various chemical additives and…
The reinforcement is exceptionally dense
56
The high-pressure concrete delivery line is secured to the
outer wall of the pylon towering to a height of 300 m
57
1.088 m
8.206 m
306 m
Before delivery of the BSA 14000 HP-D
high-pressure concrete pump, Putzmeister
had promised that, with a delivery height
of 310 m, the machine would still deliver
30 m 3 /h through a 125 mm pump line. To
this end, the BSA had been designed for
concrete pressures of up to 260 bar. When
a disproportional increase in hydraulic
pressure at the concrete pumps was observed
on reaching the 150 m mark, Putzmeister
AG After Sales department and the
Technical Management were called upon to
intervene. After a minor modification to the
concrete recipe, a reinforcement of certain
concrete pump components under the most
load, and the use of new generation hard
metal wear parts, it was possible to resume
the vertical delivery of the concrete.
The total costs of the Sutong bridge building
project are estimated at around 6.45
billion yuan (approximately US $ 726
million). The work began in June 2003;
completion is scheduled for 2009.
A totally unbalanced grain size was typical at first of
the concrete used at the Sutong bridge
59
A BSA 14000 HP-D PM high-pressure pump under the mixer. You're observing the concrete pouring…
58
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PM 3786 GB

22
PM 3786 GB
Bridge Construction
Info on the Yangtze
After the Nile and Amazon, the
Yangtzekiang ranks as the third longest
river on Earth. Its entire length of 6,380 km
flows through the People's Republic of
China, 2,800 km of which are navigable.
A population of around 350 million live in
its catchment area. More than 40 % of the
country's industrial production and more
than half of its agricultural production is
output from this region. On the upper course
of the Yangtze, meanwhile, the controversial
Three Gorges Dam and its massive
power station dominate the skyline.
According to unconfirmed information, the
concrete aggregates used for the Sutong
bridge originated from the rubble blasted
from the granite during construction of the
hydroelectric power station and the head
race tunnels at the Three Gorges Dam.
Several sections of the gigantic river are so
dirty today that the drinking water supply
of a number of major cities along the
Yangtze is suffering the consequences. The
mighty river flows into the Yellow Sea
north of Shanghai at a rate of 35,000 m 3
every second.
Its official name in China is Changjiang
(long river). The name by which it is
known in Europe, the Yangtzekiang, comes
from the word Yangzijiang, which is used
in Chinese only when actually referring to
the estuary region of the Yangtze.
Info on the cable-stayed bridge design
Construction engineer, Bernd Nebel, a
recognised bridge building expert,
explains the advantages of the cablestayed
design over other bridge building
methods on his website: “The advantage
of cable-stayed bridges over suspension
bridges is that it is possible to do without
cost-intensive back-anchoring by means
of anchor blocks. With the cable-stayed
bridge, the restraint cables outside the
main span are simply secured directly to
the deck. The mass of the deck at the
shore span provides the counterweight for
the main span...A cable-stayed bridge…
can be built on the open sea as the main
gateway to a substantially longer multispan
bridge… The absence of an anchor
block and the simpler construction are the
reasons why cable-stayed bridges are,
The catchment area of the Yangtze with the Three Gorges Dam on the upper course,
and the Sutong bridge not far from the estuary to the Yellow Sea
generally speaking, less expensive than
suspension bridges… The largest cablestayed
bridge in the world constructed to
date is the Tatara bridge in Japan with a
main span of 890 m. The constraining
factor in the development of even longer
spans and the crucial disadvantage of the
cable-stayed bridge are the difficult, static
conditions during the construction phase…
Cable-stayed bridges are the world over
constructed using the cantilever method...
If the load-bearing framework consists of
two pylons, the construction teams work
from both sides simultaneously until the
unsupported ends of the deck meet in the
middle. The greater the main span of the
60
bridge and the more the freely projecting
deck has been completed, the more
susceptible the superstructure is to cross
wind… Even a moderate wind can agitate
the unsupported end into vibrations
putting it at serious risk.”
(www.bernd-nebel.de)
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62
M 38-4, the big allrounder
Longer reach and more construction sites
– these are the decisive plus points
characterising the M 38-4 “Z fold boom”
that Putzmeister has developed for special
markets. Construction firms mainly in
Eastern European countries, but also in
France and Switzerland, have expressed a
keen interest in the 30-metre class.
The machine is fundamentally based on
the boom design and base structure of the
M 36-4 “Z”, which has been manufactured
in large-scale production at PM for many
years. Depending on the make-up of the
vehicle fleet of a concrete pumping service
and the content of the competition's vehicle
pool, the M 38 assumes the position of
flagship in a number of markets. The M 38
“Z fold boom” is built on a 3-axled chassis
Placing concrete in the floor of an old building
as standard. In the 4-axled version (optional),
the machine has considerable weight
reserves for carrying extra pipes and delivery
hoses. At the same time, the shorter wheelbase
helps to improve the manoeuvrability
of the truck-mounted concrete pump.
The 4-axle version was chosen, for example,
by the French pumping service, Atlantique
Pompe à Béton (APB). From the corporate
seat in Lorient, owner Patrick Boisbunon
counts the whole of Brittany within his
catchment area. In this region with a surface
area of approximately 27,000 km 2 and
almost 3 million inhabitants, APB uses a
total of six truck-mounted concrete pumps
in the 20 and 30-metres class as well as a
PUMI ® truck mixer concrete pump.
Concrete placement in the back yard
Monsieur Boisbunon drives the new M 38-4
himself. For this afternoon, he has been
summoned to the centre of the town of
Quimperlé. He is already familiar with the
construction site from previous visits. In
the busy traffic, he sets up the machine in
front of the house and is relieved once
more that his M 38 is equipped with oneside-support
(OSS). The truck-mounted
concrete pump is needed in the restoration
of an annexed building in the rear courtyard,
the roofs of which – spread over three
floors – had to be removed first and are
now going to be replaced with new ones.
Today, the floor on the top level is being
poured out with fine concrete (grain size
0/5 mm).
From the main road, Patrick Boisbunon
controls the quadruple-jointed “Z fold
boom” past the chimney of the streetfacing
house and over the ridge of the roof
Technology
at a height of approximately 11 m. He then
angles the “C” and “D” arms downwards
towards the courtyard and, by gently
slewing the boom sideways to and fro,
manoeuvres the end hose into a position in
which it can be pulled through the window
opening by the members of the construction
team. Within a few minutes, the 4.5 m 3
of fine concrete is distributed on the floor
surface measuring barely 50 m 2 . To make it
easier for the concrete hose to be swung by
hand, Monsieur Boisbunon had exchanged
the ND 125 end hose for an ND 100 hose
in advance and connected it using a reducer
on the boom delivery line. As efficiently as
the M 38 was set up and made ready for
use, the pipeline was cleaned with a sponge
ball and the boom brought into the transport
position. It was already time to depart
for the next construction site of the day.
63 64
Above and beyond the roof of the main building on the
street, Monsieur Boisbunon controls the placing boom
of his M 38-4 through the window of the adjoining
building
65
23
PM 3786 GB

Practical Tip
Small pin
for great
effect
The fact that concrete is often, or
frequently has to be, pumped through
extended hose and pipelines was demonstrated
by a few examples in this edition
of PM Post. Putzmeister AG expressly
points out that the use of lever couplings,
e.g. with the SK standard coupling system
and the PX hoseline system, demands that
the tension levers be additionally secured
against inadvertent release by means of a
spring pin (cotter pin).
Only with a spring pin are lever couplings really secure!
Imprint:
Publisher
Putzmeister AG
Max-Eyth-Str. 10
D-72631 Aichtal
Tel.+49 (71 27) 599-0
Fax 599-520
■ Editor:
Jürgen Kronenberg
■ Design:
Friedrich Pippich
It is not that this precaution is a
necessary to prevent couplings
from being released unintentionally
as a consequence of
the concrete pressure that
builds up in the line. This risk
is practically eliminated as
soon as the coupling lever is
forced beyond the dead point.
The machine operator is not able,
however, to prevent the hoseline
from moving during operation and,
for example, being caught on reinforcements.
An unwanted counter-
Your fax for further information
■ Would you like more information on certain topics in this edition of Putzmeister Post?
If so, just copy this page, make a cross next to the topics you are interested in and fax
the form to us. We will then send you detailed information immediately.
❏ Truck-mounted concrete pump BSF 20.09 H ......................................BP 3697
❏ Shotcrete pump P 715 TD ................................................................MM 3541
❏ Truck-mounted concrete pump M 42-5 „RZ“ ......................................BP 3756
❏ Stationary concrete pumps ..................................................................BP 2632
❏ Stationary delivery booms ..................................................................BP 2059
❏ TELEBELT ® TB 110 ..............................................................................TB 3637
❏ Putzmeister Delivery line systems ......................................................PM 2300
❏ Truck-mounted concrete pump M 6X ..................................................BP 3621
❏ Truck-mounted concrete pump BSF 38.14 H, 16 H, 16 HLS ..............BP 3698
Putzmeister AG, Max-Eyth-Str. 10, D-72631 Aichtal
PSdg, Deutsche Post AG, Entgelt bezahlt, E 60458
movement, and the tension lever opens.
The consequence is an uncontrolled concrete
stream that gushes out of the line
with a pressure of 85 bar and that may
cause disastrous damage to property and
devastating personal injuries.
For safety reasons, therefore, experienced
machine operators will carry a few more
spring pins on-board as spares than are
actually needed. For not only do the spring
pins secure the couplings of the extension
lines, they are also a requirement for the
couplings of the boom pipework. Fitting
the cotter pin only takes a matter of
seconds. In the interests of risk-free
operation, any safety-conscious machine
operator would take the time to ensure
this is done.
Name ........................................................................................................
Company ..................................................................................................
Position ....................................................................................................
Street ........................................................................................................
Post code/City ..........................................................................................
Tel. no. ......................................................................................................
E-Mail........................................................................................................
Putzmeister AG
Max-Eyth-Str. 10 · D-72631 Aichtal
P.O.Box 21 52 · D-72629 Aichtal
Tel. +49 (71 27) 599-0
Fax +49 (71 27) 599-520
Internet: http://www.putzmeister.de
E-mail: pmw@pmw.de
PM 3786 GB All rights reserved. Subject to technical amendments without notice. The illustrations in some cases show special-purpose machine designs and snapshots of site
practice which do not always comply with the regulations determined by professional bodies. © 2006 by Putzmeister AG · Printed in Germany (3.50609RR)
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