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Free span floor
- Thread starter mac48370
- Start date
ZRX61
Well-known member
Don't think that narrow ledge would fly here with the seismic codes.
rancherbill
Well-known member
Full load 38' unsupported decking
Looks good. I take it that that's going to be a garage.
THE SECOND PIC GIVES ME THE CREEPS. Our foundation had several loads of bad concrete and your floor is resting on just a lip of a couple of inches. I am sure our concrete would have failed.
LX-Markham
Well-known member
Coreslab. Excellent!
Always thought that would be great in residential use.
Always thought that would be great in residential use.
jkeyser14
Well-known member
Don't think that narrow ledge would fly here with the seismic codes.
Most prestressed panel manufacturers show similar details and their panels are used in large commercial skyscrapers. I am sure it is fine.
jkeyser14
Well-known member
Looks good. I take it that that's going to be a garage.
THE SECOND PIC GIVES ME THE CREEPS. Our foundation had several loads of bad concrete and your floor is resting on just a lip of a couple of inches. I am sure our concrete would have failed.
If the walls are 3000 psi concrete you only need 1 square inch to support the weight of a car. Add another 3 square inches to support the weight of the panel and any other live/dead loads and you can easily see how a panel with 2" x 48" (96 inches square) of support on each end of a panel can easily handle the loads here. As long as the footer was designed for the additional weight of the prestressed concrete and its top coating there is no problem here and the design has a huge factor of safety.
The ledge is 4.5" the manufacturer of the planks only requires/recommends 3" bearing surface on each end there is a 1" gap all the way around that was grouted to make a continuous floor along with tapered key ways between the planks that was also grouted...this will then be topped with 2" and is rated to hold 105lb/sqft of loading
nadogail
Well-known member
IMHO, I see nothing bonding the beams to the walls. If the beams had rebar sticking out of their ends that was bonded into a reinforced belt of concrete at the perimeter of the walls, I would be more comfortable with the structure.
Any opinion expressed by me is guaranteed to be worth exactly what you have paid me for it.
Any opinion expressed by me is guaranteed to be worth exactly what you have paid me for it.
ConCretin
Well-known member
each 4' wide beam weighs 12000lbs then is grouted in the top portion of the wall has vertical rebar every 2' it will also get a min of 2" of concrete topping later on pretty sure they will be there forever
Yup. No worries whatsoever. It's a very common design that has been very widely used. Great looking project. Congrats!
strutaeng
Well-known member
Cool build. How deep are they? Around 12-14"? Do they get a cast-in-place topping?
I've worked with before, but not too common in Texas. Mostly schools. For some reason not as popular as they once we're here, not sure why.
Both upper and lower spaces are going to be awesome, column-free space! Great job!
Keep us posted on the progress ��
I've worked with before, but not too common in Texas. Mostly schools. For some reason not as popular as they once we're here, not sure why.
Both upper and lower spaces are going to be awesome, column-free space! Great job!
Keep us posted on the progress ��
larry4406
Well-known member
Excellent!
I would like to do one of these! Recently finished a garage project with support steel, metal decking, structural slab, etc. Real PIA
Please post a build thread on this!
I would like to do one of these! Recently finished a garage project with support steel, metal decking, structural slab, etc. Real PIA
Please post a build thread on this!