,Home owners and builders today have so many choices in floor framing materials when building a home. In many ways this is fantastic because these material choices mean there is a solution to almost any tricky framing situation and the answer doesn’t have to be additional posting or bearing. This can cause some confusion as to what the right choice is for a given situation. Typically, when confronted with spans that are too long for conventional floor framing, TJI joists are the logical, cost-effective solution and are readily available in long lengths at most lumber yards. However, with a little planning ahead of time there is another answer, pre-engineered open web floor trusses!
Unlike the TJIs, which are comprised of two wood flanges and an OSB plywood web, pre-engineered floor trusses are typically made up of solid wood components. The components are then either mechanically fastened with metal gusset plates or finger jointed and glued. This means there is no drilling or cutting when it comes to installing utilities (plumbing, HVAC, electric, etc…).
Like TJIs, pre-engineered floor trusses are designed and manufactured to span long distances over multiple bearing points without being broken. Not having to cut and piece together multiple floor joists means time saved. This, combined with a typical layout greater than 16” on center allows pre-engineered trusses to be installed far quicker than traditional 2x framing. The large flanges also provide more surface area for the adhesive to bond to, making a stronger connection which can then be nailed. This makes for a stiffer and quieter floor in your home.
Whether you’re looking for a floor system that is quicker to layout and sheath, or you just want some flexibility when it comes to installing house utilities or you just want to minimize the amount of posting and beams required to support your floor system. Pre-engineered floor trusses are a great option that are sometimes overlooked because of schedule and/or price but with a bit of planning the amount of time saved during construction can offset the extra cost and result in a better product for the home owner.With a bit of planning however the amount of time saved during construction can offset the extra cost and result in a better product for the home owner and an easier build for the contractor.