BRIDGING _Quantities_ LINEAR FEET FEET B. M. 2" × 4"; ⅔ ft. B. M., per lin. ft.: First floor, 170 pieces, each 1' 6" 255 Second floor, 138 pieces, each 1' 6" 207 Third floor, 138 pieces, each 1' 6" 207 --- Total 669 446 [10] One joist will be left over here, but this cannot easily be helped. MAIN-ROOF FRAMING[11] _Quantities_ LINEAR FEET FEET B. M. Rafters, 2" × 6"; 1 ft. B. M., per lin. ft.: 15 pieces, each 20', order 20' 300 14 pieces, each 19' 3", order 20' 280 1 piece, 18', order 18' 18 2 pieces, each 16', order 16' 32 2 pieces, each 14', order 14' 28 1 piece, 13' 4", order 14' 14 3 pieces, each 10' 6", order 12' 36 3 pieces, each 8' 6", order 10' 30 1 piece, 6' 9", order 8' 8 3 pieces, each 5', cut out of 16' 16 3 pieces, each 3', cut out of 10' 10 4 pieces, each 17', order 18' 72 1 piece, 12' 6", order 14' 14 1 piece, 10' 9", order 12' 12 2 pieces, each 9', order 10' 20 1 piece, 7', order 8' 8 18 pieces, each 9' 6", order 10' 180 2 pieces, each 13', order 14' 28 2 pieces, each 7' 9", cut out of 16' 16 2 pieces, each 6' 6", cut out of 14' 14 4 pieces, each 3' 6", cut out of 14' 14 4 pieces, each 8', cut out of 16' 32 2 pieces, each 11', order 12' 24 8 pieces, each 5' 3", cut out of 12' 48 1 piece, 6', cut out of 10' 6 2 pieces, each 2', cut out of 10' 4 8 pieces, each 11', order 12' 96 ----- Total 1,360 1,360