The Pence/Kelly PDX-QTA project for Hoffman Construction Company and owner, Port of Portland completed in 15 months of construction. This two-level parking structure sits adjacent to PDX P-2 Parking Garage. QTA stands for Quick Turn Around. Rental cars are returned on the ground level then go through an expedited process of cleaning and refueling before arriving on the top level where they remain parked until rented again.
Project Engineers includes both Zac Grasley and Brad Hays. Zach Grasley and Nat Taylor were the Project Managers while Whitey, John Stewart, Steve Taylor, Troy Humphreys, and Frank Barnes all served as project Superintendents. This was Pence/Kelly’s first BIM coordinated (Business Information Modeling) project–a three month plan and design modeling process that preceded construction.
The 315,420 square foot structure was built on 150-foot piles with pile caps and a structural parameter grade beam. Cast in place concrete walls and columns were used to support the precast double-T structure. A four-inch structural slab was placed over the double-Ts, then waterproofed, before a two and a half inch fiber reinforced topping slab was applied. Over 12,000 cubic yards of concrete were poured on this project.
Pence/Kelly Concrete completed this 11 month, 5.5 million dollar concrete package ahead of the scheduled completion date and achieved our goal of zero time-loss injuries. The project involved construction of a new 11 story 260,000 square foot structural steel and concrete building. The structure includes five basement levels and two free-standing concrete shear walls extending to a combined height of 350 vertical feet. Work was performed on steep terrain with little to no lay down area. All contractors parked offsite and coordinated deliveries on a just-in-time basis. This required intricate planning and coordination to avoid any delays in the project. Cutting edge technology was utilized by making use of a concrete maturity testing system to decrease shear wall form cycle times. This new addition to the Portland skyline incorporates nearly 12,000 CY of concrete.
Pence/Kelly poured over 30,000 cubic yards of concrete for this project and met the condensed schedule for our primary contractor, Hoffman Construction.
Pence/Kelly’s contract with Hoffman for this project included over 350,000 square feet of slab-on-metal-deck, extensive curbs, stem walls and embeds. Additionally, the fourth floor landscaped roof required architecturally finished radius walls. Due to the waterproofing system in this location, an irregular forming system was utilized to ensure no penetrations through the waterproof membrane.