WATERPROOFING DOUBLE TEE PARKING DECKS
WATERPROOFING DOUBLE TEE PARKING DECKS
(OP)
I am currently in charge of restoration work to bring up to code a parking deck constructed of precast double tee sections, bearing on precast inverted T beams, supported by cast in place columns. The waterproofing membrane is very piece-meal on top of the deck, and ideally, I'd like to replace if all with one system. The only thing that I can think of though is 2 ply hot rubberized asphalt below a wear course of asphalt concrete.
Regardless, every 8 feet, there's a gap between double tee sections. Therefore there is a lot of movement in this deck, miniscule or not, it happens, and so a waterproofing membrane would have to bridge gaps and be able to stretch cyclically for a long period of time. I can't see any product being 100% effective for a long period of time in this application.
Any ideas out there???
Regardless, every 8 feet, there's a gap between double tee sections. Therefore there is a lot of movement in this deck, miniscule or not, it happens, and so a waterproofing membrane would have to bridge gaps and be able to stretch cyclically for a long period of time. I can't see any product being 100% effective for a long period of time in this application.
Any ideas out there???






RE: WATERPROOFING DOUBLE TEE PARKING DECKS
http://www.neogard.com/AutoGard.htm
RE: WATERPROOFING DOUBLE TEE PARKING DECKS
There is currently a similar system in place, which they have considered putting back. I'd like to avoid this though because they'll just have to replace it again in 3 years. I'd like a system to last 15 years if it's at all possible...maybe I'm dreaming though!
Thanks again! Good reference for sure.
RE: WATERPROOFING DOUBLE TEE PARKING DECKS
RE: WATERPROOFING DOUBLE TEE PARKING DECKS
RE: WATERPROOFING DOUBLE TEE PARKING DECKS
Mike McCann
MMC Engineering
Motto: KISS
Motivation: Don't ask
RE: WATERPROOFING DOUBLE TEE PARKING DECKS
We recently did a large parking deck renovation in Vancouver using HlM 5000 and squeegeed it on reasonably thickly. It was then covered with concrete.
Intrusion Prepakt /marineconcrete.com
RE: WATERPROOFING DOUBLE TEE PARKING DECKS
It is not just a just a freeze/thaw problem but a structural movement due to temperature swings and exposures on a daily basis that cause movement, compounded by the salt that attacks the concrete and sealants that is tracked in by cars. - They will always move move and are subjected to some severe conditions.
Engineer and international traveler interested in construction techniques, problems and proper design.