Post Tensioned Shop Drawings
Post Tensioned Shop Drawings
(OP)
I am reviewing post-tensioned concrete slab and beam shop drawings and calculations. It is my first time. What advice do you have on things to look for?
When was the last time you drove down the highway without seeing a commercial truck hauling goods?
Download nowINTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS Come Join Us!Are you an
Engineering professional? Join Eng-Tips Forums!
*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail. Posting GuidelinesJobs |
Post Tensioned Shop Drawings
|
RE: Post Tensioned Shop Drawings
BA
RE: Post Tensioned Shop Drawings
RE: Post Tensioned Shop Drawings
Shop drawings are prepared by the fabricator or supplier and must meet the criteria set out by the EOR.
In the case of post-tensioned slabs and beams, the EOR might have specified a prestressing force per foot of width. Or he might have specified tendon sizes and locations and anchor types. In some cases, he might leave the entire design up to the supplier, subject to checking by the EOR.
What you should look for is anything which affects the capacity of the floor or roof to carry load because, in the end, the responsibility for the final design rests with the EOR.
BA
RE: Post Tensioned Shop Drawings
RE: Post Tensioned Shop Drawings
Bands normally have tendons spaced at 300-600mm and slab spans at 800-1200mm.
RE: Post Tensioned Shop Drawings
I'd check for an engineers stamp on the SDs and calcs. Check the concrete mix design against the volume change calcs for assumed values. Verify conventional reinforcement placement and do a qucik check on a couple of tension strands.
RE: Post Tensioned Shop Drawings
For example, on a three span beam (46', 31.5' and 48') I get maximum factored positive moment of 1,250 kip feet. His calcs show only 890 kip feet.
RE: Post Tensioned Shop Drawings
RE: Post Tensioned Shop Drawings
RE: Post Tensioned Shop Drawings
RE: Post Tensioned Shop Drawings
VoD
RE: Post Tensioned Shop Drawings
RE: Post Tensioned Shop Drawings
Which Code makes that requirement?
VoD