Qt = Total air flow of Dust collector. Q1 = Air Flow in first area. Q2 = Air Flow in second area. etc. Static Pressure is a loss due to the air flow pressure pickup area to exit the dust collector system.The pressure loss can occur in the suction, ducting, elbow and cyclone. Calculation of static pressure is based on the duct size.t = Total air flow of Dust collector. Q1 = Air Flow in first area. Q2 = Air Flow in second area. etc. Static Pressure is a loss due to the air flow pressure pickup area to exit the dust collector system.
What is the average cost per square foot to install roof? It depends on the type of roof. A single story low pitch asphalt shingle roof will cost around $40 - $80 per square (100 sq. ft.) to tear off and $75 - $100 per square to inst â¦ all new shingles.If the plywood sheathing underneath is damaged, it will cost extra, up to $50 per sheet replaced.hat is the average cost per square foot to install roof? It depends on the type of roof. A single story low pitch asphalt shingle roof will cost around $40 - $80 per square (100 sq. ft.) to tear off and $75 - $100 per square to inst â¦ all new shingles.
Asphalt shingles cost slightly more than comparable fiberglass shingles, although the two products fall in the same general price range. In most cases, budget about $60-$120 per square for materials, $80-$200 per square for installation and $80-$150 per square for removal of the old shingles.1  For a 1,500-square-foot roof, the total cost for materials and installation would be $2,100-$4,800.ost fiberglass shingles fall in the range of $60-$120 per square, not including installation. A square covers 100 square feet. On the low end of that price range, youâll find 25-year shingles. On the high end, the shingles are often warrantied for life.