Two large cranes are on site erecting the last structural steel members to frame out the rooftop penthouse and place the curved tube steel framing for the new atrium roofs. Within the building, the structural window jamb repair work is now complete. Exterior windows have been placed on the west, north, and east façades. About 75 percent of all the windows have now been installed. In the north atrium, the last few steel windows are being abated and cleaned for new paint. Repointing and repair of the existing building facades also continues, and is nearing completion.
All interior structural steel framing has been installed to infill the last remaining hole in the core of the building, from Level 0 all the way up to the roof. The underside of the metal deck forming the floor plates has been sprayed with fire proofing. Concrete has been placed over the metal deck on all levels to form new floors. Currently, a large crane is onsite erecting the last of the heavy structural steel beams and columns to form the roof penthouse that will house mechanical and electrical equipment. The crane is also setting curved tube steel “ribs” that will form the new structure for the roofs that will cover the former atriums, to make them indoor spaces eventually when the roofing is installed in the next couple of months.
Lead-based paint and asbestos removal continues on the historical steel windows at the two atriums. It is a tedious, slow process. Restoration, patching, and infill of matching yellow brick masonry to match existing walls is also in progress in the atriums. Concrete pedestal supports that will hold the transparent roofing are complete around the atriums. Steel stair assemblies for the building core at the ACCelerator are onsite and will be set in place soon on all levels.
All the major flat slab reinforced concrete floors have been poured up to Level 3 in the core of the building. The shoring and formwork was removed last week. The concrete shaft walls for the two elevators have been erected to the roof and topped out. Brick repair and cleaning of the ornamental cast stone continues in both atriums. On the east side, all the window openings have been roughed in with wood blocking and are prepared to receive new windows, which are currently in production and arriving on-site in about a month.
The heart of the college’s fourth ACCelerator is taking shape at Rio Grande Campus, Building 1000 with workers pouring the first- and second-level elevated concrete slabs in the core of the building. To close in the building and keep out the elements, workers will continue to place steel framing, metal floor deck, and concrete topping in floor penetrations that were cut into Level 3 and the roof, which provide openings for mechanical exhaust ductwork and supply air ductwork to pass through.
In June, construction crews completed demolition on the center area structure and formwork for the ACCelerator slab. At the bottom level, steel columns were erected, plumbing and electrical risers were installed, and wall framing and mechanical/electrical/plumbing installation were started. On the first level, stairs were poured at the northeast entrance and underground plumbing on the southeast side was completed. Crews also installed beams and finished steel infill for the roof openings. Activities for July include beginning work on the elevator shaft and filling in the roof openings.
Construction crews continue to make progress on the Rio Grande Campus renovations. In May, shoring — the process of temporarily supporting a building with props during alterations — was completed at the south mechanical room and the elevated slab poured. Slab was also poured at the south multipurpose room. In the center area, the columns and beams from levels 0 to 3 were demolished. Plumbing pipes have been installed underground at the bottom level. In June, new slab will be poured at level 1 north entry and around the north and south chase. Crews will also start steel framing and metal decking at level 2 east entry and do the formwork for the slab in the ACCelerator room.
Renovations are moving forward at Rio Grande Campus. The contractor is installing formwork in preparation for pouring an elevated concrete slab which will become a new floor level for the future Student Commons space. Walls have been poured at the north atrium and the south mechanical room. Additionally, air conditioning equipment has been delivered and set in the basement. Grading and electrical rough-in also has started in the ACCelerator. Steel framing is ongoing on levels one and two.
Construction work continues to move forward on Rio Grande Campus. Waterproofing has been completed in the north atrium and has commenced in the south atrium. Underground electrical and plumbing also has started in both atriums. Crews have begun concrete removal in the basement corridor for telecom and plumbing trench and roof tear-off. The south mechanical chase slab and the footing between the ACCelerator and the south mechanical room have been poured. Window removal at level 2 has been completed. The photos below show the roof tear-off and pouring concrete in the north atrium.
At Rio Grande Campus, crews have completed pouring walls at the north basement mechanical room and are working on electrical and telecom systems. Metal wall framing also has gone up on the second and third floors, walls are being installed in the south atrium, and crews are pouring columns in the campus ACCelerator. In the coming weeks, work will focus on window removal and duct installation.