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Building Componenr S
GC Exam - Roofing and Rafter Installation
Question | Answer |
---|---|
When can trusses be lifted near their peaks? | When they are less than or equal 20 feet. |
How should trusses that are equal to or greater than or equal to 30 feet be lifted? | They should be lifted at the Top Cord Joints near the quarter points of the span. |
Top Cord or Parallel Cord Trusses shall be installed so that the gap between the first diagional or vertical web member does not exceed? | ½” |
What are the allowable bows or tolerances for different truss lengths? | BSCI table on page 11 |
Lateral restraints shall be of what size and placement? | 2 x 4 x 12 or greater and lapped over two trusses. |
What is the maximum spacing for bottom cord temporary lateral restraints? | In rows no greater than 15’ o/c |
Who may allow the cutting, drilling or altering of a structural member of the truss? | The truss manufacture / registered design professional |
All lateral restraint and diagonal bracing material shall be made of? | At least 2 x 4 stress-graded lumber |