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there are the contractors, the sub's and the crews all can and will take the eazy way out
example a place called COUNTRY WALK in south Dade
the plans called for rebar in the concrete beams
''SOMEBODY" desided to skip that to save a few bucks and time
story was they made up a portable set of rebar and after the Insp moved on
they just pulled the rebar set from the forms and moved the rebar to the next homes site
when hurricane ANDREW blew in a few year later
you saw the destruction on the TV news
the homes blew apart many with walls down not just roofs failing
BTW right across the street was a different builders site
and NONE of those houses had major damage or roofs that failed
the other problem is good new ideas are hard to use if they are not covered in the existing code
in the islands [ Bahamas] the ship builders do the roofs and build them like a ship hull
3 layers of a/c ply screwed and glued with the screw holes plugged, then the roof is just painted, no need for tar and paper or tile or shingles
BUT in south Fla the code will not allow this stronger and better roof that will not blow off in any storm as the code said the size and type of nails that must be used no matter that screws are many times stronger and the roof must have tar and paper and then be covered with tiles over 1 sheet of cdx plywood that is no where near as strong as the 3 layers of a/c
plywood in even one layer
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