TST chapter 13

Question 1

Reading a roof before stepping onto roof

Answer 1

• age of the building
• type of roof construction
• location and orientation of supporting members
• type of condition of roof coverings
• heavy tanks , machinery , solar panels or other loads
• visible smoke
• visible fire

Question 2

using a tool on vertical ventilation it is

Answer 2

recommended that a clear space of at least 10 feet be maintained in all directions from anyone using a cutting tool

Question 3

pitched roofs

Answer 3

the angle or degree of the slope…the pitch is expressed in inches of fall per horizontal foot….a roof that decreases 5 inches vertically for each foot is known as (5 and 12 roof pitch)

Question 4

panelized roofs

Answer 4

laminated beams of various sizes commonly 6x36 inches that span the length or width of the building and supported at ends by pilasters(wooden or steel posts or saddles)

Question 5

wooden I -beam

Answer 5

consists of 3 main components….top chord…a bottom chord….and a solid 3/8 plywood or OSB web…the chords made of 2x3 inch lumber …2x4 inch lumber or wooden laminate …dommon spacing is 2 feet on center