BC chapter 9

Question 1

unrestrained steel beam 20 feet long can

Answer 1

expand 1.4 inches significantly pushing at lateral constraints

Question 2

steel column encased in 3 inches of concrete with a siliceous aggregate would have a fire resistance of

Answer 2

4 hours

Question 3

spray-applied fire-resistive materials (SFRM)
spray foam insulation

Answer 3

applied fireproofing can vary from 7/8 to 1 7/8 to produce fire-resistive rating of one to four hours

Question 4

Intumescent and mastic coatings

Answer 4

will char,foam,and expand when heated …the material will expand to fifteen to thirty times its original volume

Question 5

open web joists are mass produced and are available with

Answer 5

depths of up to 6 feet and a span up to 144 feet ….more frequently found with depths less than 2 feet and spans of 40 feet

Question 6

Steel rigid frames usually are

Answer 6

used for spans from 40 to 200 feet and are fabricated by welding or bolting together steel shapes and plates

Question 7

Steel arches

Answer 7

constructed to span distances in excess of 300 feet

Question 8

primary purpose of a gusset plate

Answer 8

is to strengthen the connection and increase the steel mass at the connection