What joist has perforated knockouts?
Nordic I-joists provide knockout holes along the length of the joists to facilitate the installation of electrical wiring or light plumbing lines.
How strong are engineered joists?
In addition to being flat and straight, engineered studs are strong. Laminated veneer lumber (LVL) studs can be two times stronger in compression and tension than standard framing lumber of the same dimension. Recently I built a home with all LVL studs for a client who wanted the home to withstand wind and shear loads.
What are TJI joists used for?
Trus Joist® TJI® joists are a key part of making a high-performance floor. The dimensional stability of TJI joists help them resist warping, twisting and shrinking that can lead to squeaky floors.
What are the two types of joists?
In most cases there are three primary types of joist construction, namely I-joists, laminate joists, and truss joints. All are engineered lumber products that are exceptionally strong and have the ability to span greater distances than conventional lumber joists, such as two-by-tens or two-by-twelves.
Can I drill holes in joists?
You can drill the holes anywhere along the length of the joist (first photo). If you have manufactured I-joists, you can drill holes up to 1-1/2 in. diameter almost anywhere in the web area (the area between the flanges).
Can you cut holes in I beams?
NEVER drill a hole within 1′ of the end of any beam or a floor joist. You should also avoid drilling within 1′ of where a beam sits on top of a support column or post.
What are the 6 different types of floor joists?
Several popular options include solid lumber, LVL, wood I-beams, steel joists and open web floor trusses.
How much can you cut out of a joist?
The maximum hole size is 1/3 the joist’s depth. You can cut a notch at the end of the joist to 1/4 of the joist’s depth (maximum). Along the outer third of a joist, you can cut a notch a maximum of 1/6 the joist depth and 1/3 the joist length without compromising its strength.