The owner of a building hired me to create foundation rebar shop drawings for a project in Elmont, NY.
I’m Brian M. Curran, and I’ve been detailing rebar for reinforced concrete structures for more than 18 years. What follows is a summary of this foundation project. If you’re planning a project and need rebar shop drawings, I’m available to help.
Building Foundation Rebar Shop Drawings
Above is a photo of the foundation formwork for the foundation footings and grade beams. Below is the architect’s front elevation drawing of the building.
In the image above, you can see the footings and foundation walls, which were part of my scope of work. I also detailed the basement stairs, a slab on grade, a slab on metal decking, and integrated wall columns. Below is an architectural cross-section drawing showing more of the foundation, including the stairs.
I submitted the rebar shop drawings in two parts. The first submission covered the footing portion of the foundation. This portion consisted of 21 footing pads interconnected by grade beams. The footing pads were of two different types: one measured 4′×4′×1′, and the other 5′×5′×1′. Both types were reinforced with #5 bars.
The basement floor was a 6″ thick SOG, installed as a separate pour after the footing pour. It had a mesh size of 8×20′. The mesh type was 6×6-W2.9×W2.9 WWF. The slab had control joints for cracking. There were #5 diagonal bars placed at the corner of each pier that the slab butted into.
There was also an elevator pit, and I had to coordinate its dimensions with the elevator manufacturer. The floor of the elevator pit was at a 5′ lower elevation than the basement floor and was composed of a deepened slab on grade with a sump pit.
Below are the footing rebar shop drawings. Please click the image to launch the PDF.
Here is a picture of the footings in the middle of the concrete pour.
Here is a picture of the footings with the concrete pour completed.
The second submission was of the walls and additional items. The two main items within this submission were the foundation walls and integrated columns that were called piers. I provided a wall and pier key plan to help with understanding the shop drawings.
The walls were reinforced with #6 vertical bars, and #5 horizontal bars. The piers were reinforced with #7 vertical bars, and #3 ties.
The scope of my work included the first floor slab on deck. It was 2 1/2″ concrete on 1 1/2″ composite slab on deck. The mesh size was 8’×20′. The mesh type was 6×6-W2.1×W2.1 WWF.
Below are the reinforcement shop drawings for the walls. Please click the image to launch the PDF.
My shop drawings included needed tables like bar list, lap schedule for footings and dowels, lap schedule for pier dowels, abbreviations, and pad footing schedule.
All the rebar on this project was ASTM A615 Grade 60 black uncoated.
Contact
My name is Brian Curran, and I own DraftingServices.com LLC. From my office in New York City, I work with contractors nationwide on rebar and steel shop drawings. To talk through an upcoming project, contact me today at 718.441.3968, text me today at 646.504.5230, or email me today at brian@draftingservices.com.