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Re: RV: Cracks[Subject Prev][Subject Next][Thread Prev][Thread Next]
- To: seaint(--nospam--at)seaint.org
- Subject: Re: RV: Cracks
- From: Cratylus Consulting Group <cratylus(--nospam--at)earthlink.net>
- Date: Thu, 05 Jun 2003 16:08:33 -0700
You have described 4000psi concrete tested, I believe, within a month of placement.
You also described a heavy concrete roof (10" thick?) and roofing membrane applied within 2 months of casting the beams.
What could you tell us about shoring and re-shoring of the concrete beams and roof?
Also, what method of curing did you use?
Leonardo Zapata wrote:
We have a one-story conventional building of reinforced concrete, as follow:
Ribbed slab as Roof: thickness 10"
Main Beams (with vertical load): 3 spans of 26 ', section 1 ' x 2 '
Other Beams (perpendicular to main beams): 3 spans of 16'-4, section 1 ' x 1'-4"
Columns: height 18'-4", section 1'-4" x 1'-4"
Direct Foundations: section 5'-3" thickness 1´-2"
The concrete was premixed and tests have shown a compressive strength of 280 kg/cm2.
After 2 months of the construction and execution of the roof waterproofing, cracks have appeared in all roof beams. These cracks appear in their majority in the central area of each beam (approximately 3 vertical cracks surrounding the beam)
The design was revised and apparently it is right.
Additional information states that a compacting vibrating machine has circulated besides the building.
Does any of you have some idea about cause the cracks.
Would the compacting vibrating machine have effects on the structure?
Thks in advance
Ing. Leonardo Zapata H.
- RV: Cracks
- From: Leonardo Zapata
- RV: Cracks
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