front 1 For truss spans greater than 60’, a strong-back should be attached to the top cord and web members at intervals of approximately | back 1 10 feet |
front 2 The approximate out-of-plane tolerance for a 20’long truss is | back 2 1-1/4” |
front 3 The spacing of trusses along the bearing support should be within _______________ of the plan dimensions. | back 3 +/- 1⁄4” |
front 4 What is the maximum allowable stack height of plywood or OSB on trusses (assume trusses designed with a live load of 40 psf or greater). | back 4 16 feet |
front 5 Which of the following is not correct? | back 5 Storing of trusses in a vertical position should be strictly prohibited |
front 6 For jobsite storage wood trusses must be supported at intervals not exceeding _______________ feet. | back 6 10 |
front 7 Cutting or drilling of truss members in the field must be approved by the | back 7 Engineer |
front 8 According to BCSI, top chord bearing parallel chord trusses should have a maximum gap between the inside of bearing and the first diagonal of vertical web of | back 8 1⁄2” |
front 9 Chord trusses may buckle or collapse if they do not have temporary lateral bracing and temporary | back 9 diagonal bracing |
front 10 What span length of truss can be safely lifted without the use of a spreader? | back 10 30’ or less |
front 11 What is the recommended size and length of the lumber to be used for temporary bracing for truss erection? | back 11 2 x 4, by 10’ |
front 12 12. Given: Top Chord Size: 2 x 10 What is the maximum truss span that can be safely restrained? | back 12 40 feet |
front 13 The maximum gap between the inside of the first diagonal bearing and
the bearing wall of a top chord | back 13 1⁄2” |
front 14 For web diagonal braces, used for wood trusses, they must be
installed so that they cross at about 45◦ and | back 14 2 each 16d nails |
front 15 A contractor is going to set a 70’ long wood truss. According to BCSI, it must be picked with a strongback attached to the top chord and web members at intervals of approximately | back 15 10 feet |
front 16 According to BCSI, when setting 40’ trusses with a 5/12 slope the
bottom chord must have temporary | back 16 15’ |
front 17 The maximum bow for a truss length of 25 feet is | back 17 1-1/2” |
front 18 Any correction, which involves the cutting or drilling of truss members in the field must be approved by the | back 18 Engineer |
front 19 Temporary lateral bracing is not sufficient to prevent the collapse of group trusses; it should always be used in conjunction with _______________ braces. | back 19 diagonal |
front 20 The top chord lateral bracing would be spaced at _______________ feet for a 40’ truss at a slope of 4/12. | back 20 8’ |
front 21 For a 40’ span scissor truss with 5/12 slope and a pitch difference
of 3, would require top chord lateral | back 21 8’ |
front 22 What is the maximum length of truss that can be picked without the use of a spreader bar? | back 22 30’ |
front 23 When installing 2 x 4 diagonal bracing _______________ nails are used. | back 23 2 – 16 d |
front 24 The maximum top chord temporary lateral restrain spacing for a truss span 30-45 feet is | back 24 8 feet on center |
front 25 With lateral bracing at least_______________ trusses should be lapped. | back 25 2 |