Douglas fir maximum horizontal roof rafter span for Lumber Grade Selected Structural and No. 1 and No. 2, are indicated below. Max. dead load (weight of structure and fixed loads) 15 lbs/ft2. Live load is weight of furniture, wind, snow and more. 1 psf (lbf/ft2) = 47.88 N/m2 ...
Inspired by the advice on this website and contrary to my original plan of using flex duct over a 15-foot length sideways with a booster fan in the middle, I constructed 8 feet of smooth wall, galvanized, insulated duct straight up from the outlet of the short span of 3-inch ducting ...
The depth distributions determined for the GBR region are based on numerous observations and span a greater depth range than other Pacific observations. However, collating observations from such a large geographical area likely masks the modern complexity of coral distribution within the reef system e....