Hot Rolled Asphalt and Asphalt Concrete (Macadam) - Ministry of ...

Specification 12 Hot Rolled Asphalt and Macadam for Airfields 7 Plant and Workmanship
Asphalt or Asphalt Concrete (Macadam) course
and the ramps shall be transverse to the line of
aircraft movement or as directed by the Project
Manager. The ramps shall slope in the same
direction unless directed otherwise. On runways,
the construction work shall proceed from the
primary takeoff/landing end such that temporary
ramps slope down in the direction of aircraft
movement. If the Contractor proposes to lay any
areas of the ramps by hand methods or methods
not approved in the trial areas, he shall seek prior
approval of the Project Manager.
* Project Manager to provide the relevant period
for the specific job specification; advice is
given in Clause Z.11 of Appendix Z.
7.23.3 Temporary ramps shall be arranged so as
to avoid covering manholes and aviation ground
lighting fixtures whenever practicable. When this
is not practicable, the manholes and aviation
ground lighting fixtures shall be covered by the
temporary ramps.
OR
Temporary ramps shall be arranged so as to
avoid covering manholes and aviation ground
lighting fixtures wherever practicable. When this
is not practicable, ramping, which must be
smoothed over as approved and described in sub-
Clause 7.23.7, shall also be carried out to all
edges of manhole surrounds and aviation ground
lighting fixtures.
(NOTE. Project Manager to select option for specific
job specification; advice given in sub-Clause 0 of
Appendix Z.)
7.23.4 Ramps on the runway surface within * m
of the centre line shall conform with the following
requirements:
• The gradient of any ramp shall not exceed ± *
in the longitudinal direction;
• The gradient of any ramp shall not exceed ± *
in the transverse direction, and there shall be
no transverse ramps within * m of the runway
centre line;
• The depth of any ramp shall not exceed * mm;
• The spacing of successive ramps shall not be
less than * m in the longitudinal direction;
• The profile of the ramps shall be such that it
does not create ponding on the surface; and
• All ramps shall be planed into the existing
surface to ensure a minimum thickness of
* mm of ramping material.
* Project Manager to provide values (if clause is
required) for specific job specification after
agreement with the Aerodrome
Authority/Station staff; advice is given in
Clause Z.11 of Appendix Z.
7.23.5 Ramps on the taxiway and the extended
taxiway to a point * m from the runway centre line
shall conform with the following requirements:
• The gradient of any ramp shall not exceed ± *
in the longitudinal direction;
• The gradient of any ramp shall not exceed ± *
in the transverse direction;
• The profile of the ramps shall be such that it
does not create ponding on the surface; and
• All ramps shall be planed into the existing
surface to ensure a minimum thickness of
* mm of ramping material.
* Project Manager to provide values (if clause is
required) for specific job specification after
agreement with the Aerodrome
Authority/Station staff; advice is given in
Clause Z.11 of Appendix Z.
7.23.6 Ramps on the runway paved shoulders
shall conform with the following requirements:
• The gradient of any ramp shall not exceed ± *
in the longitudinal direction; and
• The gradient of any ramp shall not exceed ± *
in the transverse direction.
* Project Manager to provide values (if clause is
required) for specific job specification after
agreement with the Aerodrome
Authority/Station staff; advice is given in
Clause Z.11 of Appendix Z.
7.23.7 All ramps shall be inspected prior to the
completion of each * work and are to be modified
or made good to the satisfaction of the Project
Manager where he deems them to be
unsatisfactory. There shall be no uncovered tack
or bond coat material, oil, petrol, grease or similar
contaminants and no steps, ruts, pits or bumps of
greater than 3 mm in height/depth. The surface
shall be cleaned and swept of all plant,
equipment, unsound or ragged materials, debris,
dirt and similar, all to the satisfaction of the Project
Manager.
* Project Manager to provide the relevant period
for the specific job specification; advice is
given in Clause Z.11 of Appendix Z.
7.23.8 All or part of the temporary ramps are to
be planed out at the commencement of the next
period of work to ensure that a minimum of * mm
of material can be laid. The planning out of the
ramps and laying of the new material is to be
carried out in accordance with Clause 7.22.
28 July 2010