Both levels of ICF walls are up. Sub floor is in next step is the
I intend to ring the top of the ICF walls with a 6x12 timber to
transistion to wood. I have a front and rear span of 22 ft that will
have posts supporting this timber. Timber will be epoxyed or red
headed into concrete. I'm thinking of insetting the timber 3" to the
inside for revel. ICF Blocks are 11" but 2.5" is outside foam so no
House is 40x48 and will have simple gabled roof 4-12 pitch. How do I
figure out my roof sq ft? Figure adding on a 2' overhang.
Thanks. Says 2196 sqft seems small but then I have no idea anyway so
this gets me closer for ordering the 4ply when it's time.
Just a side comment, I priced 12" x 3/4 wedge bolts to attach my
header timber was told $30.00 each! YIKES!
I just got a quoute on heavy timber trusses from a local company,
$97.00 per ft! That's over $20k just to keep the roof up. Scissor
trusses are $54.00 each and monos for the side $32.00 each. Looks like
I am going with scissors.
The plan area of the roof is 44 x 52 due to the 2' overhangs. The
hypoteneuse of a 4-12 triangle is sqrt(4*4 + 12*12) = 12.649. So the
roof area is (12.649/12) times as big as the plan area. This makes
(12.649/12) * 44 * 52 = 2412 square feet.
However, if you are ordering 4' x 8' plywood, then you want to know a
little bit more. Assuming the ridge runs the 52' direction, each side
of the roof is 52' by 22 * (12.649/12) = 52' by 23.19'. So you'll
need 6 rows of plywood on each side (23.19 / 4, rounded up). Each row
will require 6.5 sheets (52/8, rounded up to nearest half). So you'll
need 2 * 6 * 6.5 = 78 sheets.
6x12 is the header that transitions from ICF to the wood. It will give
me a heavy timber look inside. I suspect it's heavier than I think.
I've got 2 22 ft spans that will be one timber supported twice in the
center with 6x12 on end. No way to upload a pix to show you but will
send email with address.
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