DRAFT CONCEPT DESIGN REPORT UNIVERSITY OF CALGARY ...

8.5 Structural (cont.)
The removal of columns without increasing the load on other adjacent columns and
piles would allow for structural revisions to the existing superstructure, without the
need for work to the existing pile foundations. This will allow the lower levels, and
large areas of the upper levels to remain untouched, reducing the demolition and
new construction scopes.
The proposed new classrooms extending beyond the east face of the Block are a
significant increase the existing protruding structure. This area would require
significant new construction, including new pile foundations. However, this work
would be more easily achieved in this location as it is at the perimeter of the existing
building, allowing for excavation and drilling without significantly impacting the main
Block structure.
Similar to the Tower, the structural steel mechanical penthouse could be relatively
easily re-constructed to suit new mechanical requirements.
� Link
The proposed re-purposing of the McKimmie Library structures includes a
significantly revised link. The existing two storey, structural steel framed link is
designed for a 4.8 kPa live load due to use and occupancy on level 2, and for snow
loading on the roof level. The ground level is a concrete slab-on-grade. This
configuration does not allow for additional capacity in existing members and
foundations to be realized by reduction of live loads as was accomplished in the
Tower and Block structures. Significant additional capacity would be required to
achieve the proposed vertical expansion of the link to match the height of the Block.
Therefore, it is likely that the existing link will be removed and reconstructed in its
entirety, including construction of new pile foundations. Due to the desired
transparency of the new link, it can be expected that the new construction will
consist of structural steel, which generally allows for a much lower and slimmer
profile than concrete. New construction of the link could easily accommodate
seismic design requirements of current building codes.
As discussed in the Block above, it is proposed to relocate the elevator currently in
the interior of the Block to the Link, at the perimeter of the Block. Elevators generally
require specialized foundations. As foundation work is very difficult within an existing
building, it was deemed that relocation of the elevator to the link area would allow
for the necessary foundation to be constructed.
8.6 Elevators
Recommended and Required Upgrades
RECOMMENDED UPGRADES (LOW PRIORITY) - SHORT TERM (24+ months)
a) Car cab renovations - The elevator cabs of all units appear to be original and
are in poor to below average condition. Car cab interior renovations will be required
within the next 2 to 4 years.
Total cost: $200,000
Required Upgrades – long term (5-10 years)
NONE
Recommended Upgrades (high priority) – short term (1-2 years)
b) Code compliance - voluntary upgrades - The existing elevators meet the
applicable code under which they were installed; there are no outstanding
mandatory retroactive code upgrades required at this time. There are, however,
several features that the existing elevators do not have that are required on new
elevators and installation of these devices is optional:
(1)Hall door retainers and fire gibs;
(2)Car door restrictors.
It is recommended that these devices be installed on all elevators where necessary
to ensure that the highest possible degree of safety is maintained at the site.
Estimated cost $60,000 (plus taxes)
Recommended Upgrades - (1-2 years)
Control and fixture upgrade - Traction Elevators
The existing control systems for all of the traction elevators is the original openlooped
VVDC-MG relay logic based system that can be maintainable for the
foreseeable future. This type of relay logic system is very maintenance intensive.
Leveling accuracy of elevators with this type of control system can only be
guaranteed to within +/- 3/4" under normal operating circumstances. The existing
systems will provide inconsistent leveling as the system ages, regardless of normal
maintenance routines, and problems will likely worsen as the expertise available in
the industry to adjust this type of system becomes more and more difficult to source.
The current dispatching system also utilizes mechanical relays and contact or coil
failures are very difficult to troubleshoot.
Plans should be made to upgrade the traction elevator control system to newer
microprocessor based, closed-loop control systems. This would include replacement
of controllers, new VVVF motor drives and AC motors, refurbishing of machines,
installation of auxiliary braking devices, installation of compensating devices and
load weighers, and replacement of hall and car fixtures with vandal proof barrier free
compliant devices.
The benefits of such a modernization would include: guaranteed floor leveling
accuracy to within 1/4", smooth, step-less acceleration and deceleration, reduction
in unscheduled shutdowns and malfunctions, reduction in waiting times for hall calls
by 25 to 50 percent.
Estimated cost $1,400,000 (plus tax) for all traction units
CONCEPT DESIGN REPORT
UNIVERSITY OF CALGARY
MacKimmie Tower and Block I Repurposing and Renewal
Tower
The budget should be in the range of 450K per unit for a major upgrade, including
all machine room controllers, refurbishment of gearless machines (or replacement
with newer AC machines), new fixtures and cab interiors, new door operators, and
all new wiring per UofC spec. Pricing would include new 3-phase disconnects and
fire alarm panel tie-in’s. These would be regenerative drives also with potentially a
good amount of power savings and reduced cooling requirement in machine room.
To change the elevations of entrances (mechanical raised flooring option), the
budget would have to be increased 100K per elevator with a minimum to a
maximum of 200K if the machine room floor would need to be raised also.
Would have to add approx 3-4 weeks per car for this work add on (total 15-19 week
per elevator). Pricing would include all new doors and hall entrances and door locks.
Block
There is a need to have a minimum of 2 elevators, with one being a minimum of
2500-3500 lb’s for stretcher capability. May want both elevators close to each other
So if one is being serviced (or just out of service) the other can fill in.
Suggestion would be 1-2500 pound passenger traction elevator and 1 - 4000-5000
pound service traction elevator.
Budget would be (not incl structure costs).
2500 lb – 350K - time to install 12-14 weeks
4000 lb – 400K - time – 13-15 weeks
5000 lb – 425K - time – 14-16 weeks
8. CONCEPT DESIGN
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