Herr VOLKMAR
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# Posted: 23 Apr 2009 13:10
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An 8'x 16', 128-square foot, A-frame cabin on an elevated 3' concrete pin-point pier foundation with a 3'x 6'8" front flush door, one rear 48"x 48"horizontal slider window, and another upper 24"x 24" horizontal slider window for the sleeping loft.
Foundation:
(4) 8"- diameter cardboard cylindrical concrete forms for pin-point piers;
(4) 84" reinforcement rods for pin-point concrete forms;
(16) Bricks for base of footing;
(24) Layout stakes;
(8) 5' batter boards;
(1) Spool of wire for joining the two 14" reinforcement rods for each footing base;
(1) Spool of line for marking building layout lines;
(?) Bags of cement;
(?) Bags of gravel;
(?) Bags of sand...
*A few questions about the amount of concrete needed for the four footings and the four concrete piers: "How much concrete will be needed for four 8"-deep concrete footings poured into four 16"-diameter, 44"-deep holes with each containing four bricks and the four reinforcement rod supports? How much concrete will be needed to fill four 8"-diameter pin-point concrete pier forms to an estimated height of about 80"-inches? How many total bags of cement, gravel and sand (aggregate) will my foundation require? Most importantly, how much will it all cost?"
A-Frame Structural Triangle (Theoretical Dimensions):
Sides = 12'
Base = 8'
Angles opposite sides = 70.529 degrees
Angle opposite base = 38.942 degrees
Area = 45.255'
Framing:
(2) 2"x 10"x 16' girders;
(12) 2"x 6"x 12' rafters;
(6) 2"x 6"x 8' joists;
(4) 2"x 4"x 4' collar beams;
(10) 4'x 4' plywood sheets for subflooring;
(2) 16' framing braces for structural support against wind damage;
(?) 3200-square feet of roof/wall sheathing material for exterior surface areas...
*A few questions about the amount of roof/wall sheathing material needed to cover the 3200-square foot exterior surface area: "How much exterior sheathing will I need? How much will it cost? I understand that metal sheathing is preferred in the Copper River Basin region for its snow-shedding ability, so, given everything I've just said, what are my options for the A-frame I recently designed?"
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