The Toscana Condominium is a three tower structure surrounded by a 80,000 square foot elevated Recreational and Parking Deck Surface. The prevailing issue in this project was severe water penetration through the deck surfaces to the parking and other occupied areas below.
The Toscana Condominium Association commissioned The Slider Engineering Group (experts in this type of building renovation) to test and evaluate the severity of the water penetration problem and to form a solution. After many months of review, a plan for the complete renovation of the Upper Parking Deck was finalized. The major concerns of waterproofing the entire surface were addressed, along with a resolution for improper drainage, proper sloping and materials for that use, the total removal and replacement of the Expansion joint systems, and other related issues.
The renovation and waterproofing of the Toscana Parking Deck involved careful planning and many phases of construction. To ensure that traffic movement would not be stopped for the entire project while the work was being completed, a unique breakup of the total surface area was devised, allowing two of the major tower structures to operate freely while the third was being completed in specific phases.
The renovation of this project demanded total removal of all of the existing decorative pavers, sand beds, expansion joint systems, concrete curbs, sidewalks, the surface drain system and all of the existing (delaminated) membrane waterproofing system. While this type of renovation was challenging and extensive, GCC was well-equipped to complete the necessary tasks. The renovation of this project demanded total removal of all of the existing decorative pavers, sand beds, expansion joint systems, concrete curbs, sidewalks, the surface drain system and all of the existing (delaminated) membrane waterproofing system. While this type of renovation was challenging and extensive, GCC was well-equipped to complete the necessary tasks.
The Elevated Deck consists of a post tension structural slab with a poured in place concrete topping that was sloped to the drains. A membrane waterproofing system was installed over the secondary concrete surface and a sand bed with decorative pavers system provided the finish surface.
Mechanical abrasion of the exposed concrete surfaces was completed with heavy duty hydro blasting equipment to ensure that the concrete finish profile met the engineering criteria for abrasion and cleanliness.
All deck surface drains were removed and replaced with heavy duty bi-level drains. All expansion joint systems that had failed were removed; the surfaces were repaired to receive the newly specified Kemper Systems. A new, multi-layered Kemper Waterproof Deck Surface Membrane was installed over all of the exposed concrete surfaces and then flooded with a minimum of two inches of water for a 24-hour period to insure its waterproofing capabilities. After draining the flooded surfaces, a protection course of specified materials was installed over the completed waterproofing system.
New sidewalk/curbs and horizontal header curbs were poured and an appropriate sand bed was installed to receive the new paver system. Colors and designs were presented to the Board of Directors and to the appropriate committee for a final selection to be made. After the completion of the paver installation, it was decided by the Board of Directors to install a high gloss sealer in a two-coat application to lock in the pavers and provide a beautiful cosmetic finish.
The time line for this project allowed only six months from project start until final completion. Despite many unforeseen circumstances, foul weather conditions and project changes, GCC completed this project within the specified time period and well within the contract value.