Extra Credit question. Need answer ASAP.
2006-10-12 10:45:49 · 3 answers · asked by mattley35 1 in Science & Mathematics ➔ Mathematics
It's actually 19.2 inches.
The diamond marks are also called "black truss" markings, because they correspond to the truss layout which is used with 8-foot sheets of plywood (or other material), namely 5 trusses per sheet.
http://home.att.net/~numericana/answer/trivia.htm#diamond
2006-10-12 10:49:27 · answer #1 · answered by Anonymous · 0⤊ 0⤋
The black truss layout is correct.
It can be solved for geometrically using the slope of a roof as
5/8 = 0.625 is a standard slope for a roof, which may thus be built by measuring horizontally as many diamonds as there are vertical feet. In other words, the roof decking is projected into the horizontal by the black truss markings.
j
2006-10-12 10:57:11 · answer #2 · answered by odu83 7 · 0⤊ 0⤋
the mark is for 19.2 inches which is a common frame dimension for frame spacing as is 16 inch on center or 24 inch on center. 19.2 time 3 is 48 inches which is a normal plywood panel.
2006-10-12 10:59:05 · answer #3 · answered by BRUCE W 1 · 0⤊ 0⤋