Floor Joist Direction Change

When you lay a floor in a second story the boards must not travel in the same direction as the joist.

Floor joist direction change.

True floor joist span calculations can only be made by a structural engineer or contractor. Is there a way to designate which direction floor joists will be oriented prior to drawing them or a way to change the direction afterward. The levels of the home change such as with a half finished basement or split level home. While personal preference is a factor the direction in which you run hardwood flooring boards is governed by visual and structural guidelines.

You can drill 1 1 2 in. This sample table gives minimum floor joist sizes for joists spaced at 16 inches and 24 inches on center o c for 2 grade lumber with 10 pounds per square foot of dead load and 40 pounds of live load which is typical of normal residential construction. Holes anywhere in the web. The roof is modern or unique such as a single sloped roof flat roof or a unique overhang.

How can this be done. Floor joist direction. The joist might be forced away by the pressure of the single board and in addition the support will not be given to all boards equally. The floor joists may run parallel to the short dimension at the floor level but at the roof level the short dimension is the opposite direction.

The correct direction for laying hardwood floors. Another consideration is floor joist direction. Notching wood and boring rules engineered i beam rules. Bearing lines also specify where joists are cut as can walls and beams.

Joist direction lines specify joist direction and bearing lines define the boundaries for joist direction. Answer you can specify the direction that joists build using a joist direction line however this will force all the joists sharing a floor platform area i e all floors or ceilings at the same elevation to build in the direction specified. Question i want to change the direction of floor or ceiling joists in a certain area of my plan.