Hoboken Apartment Building
The above building is one of six mid-rise apartment buildings in Hoboken, New Jersey, recently built with our open web composite joist system. The joists are spaced 4’-0” on centers with bay sizes up to 32’-0”.
In this design, the joists are fabricated with the webs projecting above the top chords angles. A special pre-punched corrugated deck is placed continuously over multiple spans and is locked in place with wedge devices placed through the projecting webs. Preformed pans are fitted around the joist bearing ends to allow the cast-in-place concrete to flow down onto the supporting wide flange beams. With the addition of shear studs, the supporting beams become composite with the poured-in-place concrete slab. Both the joists and the beams are lighter but stronger due to the composite action between them and the concrete slab. The floor structure becomes a very stiff diaphragm.
In the above project, gypsum wallboard is attached to the joist bottom chords for a two-hour fire rating. Electrical and mechanical utilities are run within the floor-ceiling envelope. A continuous fire and sound barrier is created where the slab is haunched down onto the supporting beams. This same design, using galvanized joists and decking, was used on the promenade level, which is over parking, between buildings.
In this design, the joists are fabricated with the webs projecting above the top chords angles. A special pre-punched corrugated deck is placed continuously over multiple spans and is locked in place with wedge devices placed through the projecting webs. Preformed pans are fitted around the joist bearing ends to allow the cast-in-place concrete to flow down onto the supporting wide flange beams. With the addition of shear studs, the supporting beams become composite with the poured-in-place concrete slab. Both the joists and the beams are lighter but stronger due to the composite action between them and the concrete slab. The floor structure becomes a very stiff diaphragm.
In the above project, gypsum wallboard is attached to the joist bottom chords for a two-hour fire rating. Electrical and mechanical utilities are run within the floor-ceiling envelope. A continuous fire and sound barrier is created where the slab is haunched down onto the supporting beams. This same design, using galvanized joists and decking, was used on the promenade level, which is over parking, between buildings.