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was designed for a live load of about garage evaluations are completed by design team at the time should have
2.4 kPa and knowing that 2’’ of asphalt the corporation’s engineer. Ensure checked that there was sufficient
equates to a load of 1.2 kPa, the layer of that structural repairs are carried capacity, but these records may not
asphalt would consume half of the live out as required and under the still be available today. If your condo
load capacity. Structural deterioration in supervision of an engineer. Charging is from this era, and has a mastic/
the garage could also have reduced the stations often force the congregation asphalt system installed, it is best
capacity of the slab. Perhaps, the heavier of these heavier vehicles in a single to consult with the Corporation’s
electric vehicles on this deteriorated and bay or adjacent bays which makes the engineer for further direction. A
already loaded slab were the proverbial condition of the slab in these areas design check may be required. n
“straw that broke the camel’s back”. even more important.
There are some important takeaways 4. For condos from the late 1980’s and Sophia Rojenko, P. Eng, Project Man-
to consider: earlier. Many of these garages were ager with Synergy Partners, is a reserve
1. If your garage has been maintained, designed without waterproofing. fund study and performance audit spe-
and is structurally sound, and no The Corporation’s engineer can cialist who has been practicing since
additional loads have been added review the drawings to try and see 2017. Sophia has a particular interest in
to the slabs, then there shouldn’t whether a waterproofing system was helping condominiums get on the path
be a concern about having electric anticipated in the original design. to financial success so they can be effec-
vehicles parked in your garage. If waterproofing was not in the tive and vibrant communities.
2. Make sure that part of the design original design but was installed post
live load has not been consumed construction, typically the system Shahe Sagharian, P. Eng, Senior Vice
by the addition of a waterproofing that was used was a thin system (ie. President of Building Structures & Transit
system or other loads. It is very elastomeric, Kelmar, etc.), which is at LEA Consulting Ltd, has been practic-
difficult to find records of this and a lightweight system. It is less likely ing structural engineering since 1988.
one must verify site conditions to that mastic/asphalt would have With a career spanning over three de-
ensure that it has not happened. It been used because these systems cades, Shahe has been instrumental in
is best practice to post signs for any are thick and would not allow designing a wide array of new structures,
loading restrictions that result from sufficient clearance within the garage. as well as restoration and evaluation of
in-service modifications. However, it is possible in some cases modern and historic structures.
3. Ensure that periodic comprehensive that mastic/ asphalt was used. The www.lea.ca
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18 I CM Magazine FALL 2024 19
