Final answer:
Holes bored in joists as per conventional light-frame construction provisions should not be within 2 inches of the top or bottom of the joist to maintain structural integrity.
Step-by-step explanation:
The question posed relates to the specific guidelines for boring holes in joists according to conventional light-frame construction provisions. Under these guidelines, holes bored in joists should not be within 2 inches of the top or bottom of the joist. This spacing is important to maintain the structural integrity of the joist, as the areas closest to the top and bottom (the extreme fibers) carry the most stress.
When drilling holes for electrical, plumbing, or other services, it is crucial that this rule be adhered to in order to prevent weakening the joist. This requirement can typically be found in local building codes or regulations, which often follow the National Building Code or other standards set by professional construction and engineering associations.