I received a call from a builder who needed foundation rebar shop drawings of grade beams and a slab on grade for the Clay Arsenal Apartments leasing office building that is located in Hartford Connecticut.
My name is Brian M. Curran, and since 2007 I have been creating rebar shop drawings for contractors across the US. Here’s a summary of this project and the rebar detailing work I provided. If you have an upcoming job that needs rebar shop drawings, I can assist with that as well.
Foundation Rebar Shop Drawings
Pictured above is the new 2,250-square-foot, single-story leasing office building that was added to the Clay Arsenal Renaissance Apartments. It now houses the leasing offices and resident amenities. It sits on the southwest corner of the property, replacing a grassy area, and fronts 30 feet along Center Street. The structure is designed with a parapet height of 16 feet.
The front elevation features a brick veneer with aluminum storefront windows and doors, along with a steel-canopy stoop entrance. The remaining sides are finished in painted composite lap siding with matching trim. Windows include a series of two-over-two units along the north façade, a single window on the south side, and two windows at the rear, with an additional storefront door and canopy on the north elevation.
And where I came in on this project, was that the building described above sits upon a grid of grade beams that have a series of slab-on-grade structures that span between them. Here is a picture of the foundation system.
For this project my steel reinforcement shop drawings needed to detail the fabrication, bending, and placement, prepared according to ACI 315, “Details and Detailing of Concrete Reinforcement.” Include material, grade, bar schedules, stirrup spacing, bent bar diagrams, arrangement, and supports of concrete reinforcement. And include any special reinforcement required for openings through the concrete structures.
From the drawings you can see the grid pattern of grade beams and the spanning slabs-on-grade that together formed the whole foundation.
The perimeter grade beams were a whopping 6′-6″ deep, and the secondary grade beams were monolithically poured with them at 2′-0″ deep. They were both reinforced with #5 rebar, in various configurations. Lap splices were used as needed, instead of mechanical splicing like couplers. No piers were required. Under the grade beams and slabs, per a partnering geotechincal report, structural fill was required. Backfill against the outside of foundation walls was @ 90%.
There was foam-control geoform formwork manufactured by Branch River Plastics in Smithfield, RI. The formwork was permanent, because it was to be abandoned in place.
The perimeter walls of the building sat on the foundation, and it was anchored to it by Simpson 1/2″ DIA. Titen HD threaded concrete anchors at 32″ or 48″ on center. Or by Simpson holdowns as specified in plan.
The 5″ slab on grade was reinforced with #4 rebar at 12″ on center each way, over 4″ of free-draining gravel on 18″ of compacted non-expansive fill. The slabs were also monolithically poured with the grade beams.
Rebar Shop Drawing Sample
Here are my shop drawings for the project. Click on the image to launch a PDF set of the drawings.
This is a quick example of the rebar shop drawings I create for contractors who need clean, approval-ready plans. If you’ve got a project on the horizon and need rebar drawings delivered correctly and on schedule, I can help
Contact
I’m Brian, the owner of DraftingServices.com LLC. I’m located in NYC, but I take on projects from across the nation. Let’s talk about your needs. Contact me today at 718.441.3968, text me today at 646.504.5230, or email me today at brian@draftingservices.com.