Roofing Practice Exam #1 Rated A 2023

According to the architectural sheet metal manual, what is the minimum thickness of a 4" x 6" plain rectangular copper downspout? - 16 Oz When using step or channel flashing where a tile roof area intersects a side wall, NRCA recommends extending the flashing a minimum of ______ up the wall. - 4" inch When installing EPDM waterproofing, lay the membrane on the substrate or flat surface and allow it to relax for a minimum of ______ before use - 30 minutes Which of the following is not a potential problem of ponding water due to the lack of drainage on a low slope roof? - Membrane Seperation According to Roofing Construction and Estimating, how many bundles of No. 2 Tapersplit shakes are required per square of roofing when applied with 1/2" inch spacing and 7-1/2" exposure? - 6.67 Bundles Each self-supporting ladder shall be capable of supporting, without failure, _____ times the maximum intended load - 4 According to the architectural sheet metal manual, which of the following metals cannot be soldered? - Aluminum A roll of #15 roofing felt contains ____ factory squares and is _____ square feet. - 4; 324 A _______ provides a hidden method of anchorage to avoid the exposure of mechanical fasteners. - Cleat Buildings of four stories or more in height shall be provided a stairway access to the roof unless the roof slope is greater than ______. - 4: 12 According to Roofing Construction and Estimating, what is the most common type of solder used on sheet metal roofing? - 50-50 According to the NRCA, what is the maximum exposure recommenced when installing 18"inch wood shingles on a slope of 4:12? - 5-1/2" According to the Florida Building Code - Test Protocols for High-Velocity Hurricanes Zones, asphaltic shingles shall be fastened using _______ approved nails per shingle. - 6 The NRCA recommends _____ plies of asphalt built-up membrane to resist 10" of hydrostatic pressure head. - 3 What is the area of a plain rectangular downspout with actual dimensions of 3" x 4"? - 12.000 inches square What is the range of rib with for a wide rib steel deck? - 1-3/4" to 2-5/8" How many square feet will 5 bundles of 18" x3/8" shakes cover when applied with 1/2" spacing and an 8" exposure - 94 square feet According to roofing construction and Estimating, what in addition to underlayment is recommended to flash a full lace valley? - 36" wide roll roofing (50lbs or heavier) What is the minimum height for base flashing in a multi-ply membrane built-up roofing system? - 8" According the architectural sheet metal manual, standing seam roofs utilizing the pan method. and. field formed method are recommenced for roofs having a slope of ____ per foot or greater. - 1" According to roofing construction and estimating, when installing shingles across a valley, fasteners shall be a minimum of _____ from the centerline. - 6" According to NRCa, what is the approximate coverage per square for a 24", No. 1 wood shingle with the maximum exposure? - 100 square feet What is minimum thickness for galvanized steel valley lining material? - 0.0179" Which go the following is recommended for falling the open valley of a tile roof system over an unsealed underlayment system? - 26ga galvanized flashing, 2-1/2" water diverter and 1" water guards What is the average thickness of a piece of tapered insulation sloping from 2" to 6"? - 4" A construction site averages 165 employees per day. How many portable toilets are required to be on this jobsite? - 5 toilets What is the total cost, excluding tax, of 350 square feet of B&S gage 20 copper sheeting priced at $3.75 per pound? - $1,968.75 formula: 350sq x 1.5lb/sq x 3.75/lb = answer According to OSHA, each scaffold component shall be capable of supporting, without failure, _____ times the maximum intend load. - 4 According to the NRCA, which of the following roof coverings is acceptable to reroof without first removing the existing layer of roof covering down to the roof deck? - asphalt shingles