Over the past few months, the Grand Belmont team has successfully completed the majority of the self-perform concrete work. Topping out on the third level slab completes a major milestone for the project’s schedule and delivery. Since the last update, slab on grade has been poured on level 1, which includes the garage space and lobby re-design. The tenant improvement spaces have been left as gravel for future build-outs down the road. After SOG cured, formwork for the level 2 deck commenced. Lewis decided to rent Aluma Systems formwork for both level 2 and 3 post-tensioned decks. This formwork consists of interchangeable drop head posts and CC-4 panels. When the panels are removed, the remaining posts stand as the shoring system. Once the formwork was in place, MEP trades began laying out and installing penetrations. Simultaneously, ironworkers began installing stud rails, embeds, PT tendons, bottom bar, and top bar.
The level 2 deck pour began at 4 am, with ironworkers scrambling to finish tying trim bar and carpenters double checking edge forms and deck supports. With over 500 yards of concrete needed to be poured, a supported slick line (also known as a trapeze) was used as the safest option to span the entire length of the deck. This tactic required a critical lift plan and a thorough pre-task plan for the trapeze to be used instead of a placing boom. After 12 hours, the pour was complete and remaining finishing crews completed the surface of the level 2 deck.
In just less than a month from the level 2 deck pour, Lewis self-perform crews turned around and efficiently formed the level 3 deck. The same process was used as on the previous deck but this time over 600 yards of concrete was poured into the 13” transfer deck. With this final deck topped out, the Grand Belmont team celebrated with a Hawaiian BBQ for the entire crew.