Summary: The Living Rock church structure located in Brgy. Amparo, Pavia, Iloilo was originally done in bamboo (they have a concrete floor though). To replace the Nipa roof with GI Sheets is also to replace the bamboo "trusses" and ultimately the bamboo posts.
Material needs:
G.I. Sheets (actual price):
12 pcs G.I. sheets #26 x 12 feet – P300/pc. = P3,600.00
Lumber (actual prices):
6 pcs. 4x4x10 – P420/pc. (for posts) = P2520.00
12 pcs. 2x4x10 – P210/pc. (for trusses) = P2520.00
30 pcs. 2x2x10 – P126/pc. (for purlins, etc.) = P3,780.00
20 pcs. 1x2x10 – P68/pc. (for studs and braces) = P1,360.00
Nails (actual prices):
1 inch = P70/kilo
2 inch = P64/kilo
4 inch = P60/kilo
6 inch = P70/kilo
Estimated amount of nails needed: P300.00
Total Material cost: P14,080.00
Labor Cost (est. 30% of material cost): P4,224.00
2-3 workers for 7 days @ P200/day/worker
TOTAL ESTIMATED COST: P18,304.00
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Note: The lumber in this estimate is good lumber. We can use coconut lumber but it won’t last as long as good lumber.
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