Nanine Flooring July 18th, 2017 - 18:31:03
In the case of long span truss work, bearing lengths of at least 3" are quite common. Trusses span greater distances than framed floor assemblies and can be designed to span the entire building, eliminating center load bearing supports. They are moderately more expensive than framed floor assemblies, but provide a remarkably strong floor with little deflection or "bounce" to it. Another advantage to this type of structural system, is that utility installations can be run between the webwork components. Never allow trades to cut or drill into the members of a truss, for they are manufactured precisely for the loading conditions they will undergo during the life of the building.
The manufactured joist, which is a relatively new product, is often manufactured from low cost materials in the shape of an I beam, similar to steel beams in larger buildings. What this means is that the joist is constructed with a thicker top and bottom edge, and generally interlocking aspenite vertically spanning between the two. These systems are very strong, often capable of spanning the entire width of the building.
For the second variable here is a controversial opinion: we do not end match our flooring which means there is no tongue and groove on the ends of the planks. Since we recommend our floor be glued down we say this is an unnecessary expense for the customer. End matching reduces the yield in production and raises labor costs. Most end match profiles are milled so loosely that they really don`t hold the floor in place anyway. The biggest benefit to the installer is that the plank can be cut in half in any place and reused anywhere without have to mate up to a complementary tongue or groove since the end is just square cut. This means all end trim pieces or any waste can be reused. Therefore on our engineered flooring product the waste factor is virtually nothing unless there are angles or radiuses to work around. We also help with waste factor by usually supplying a random width product so when one gets close to the end of a room they can plan the width combination patterns out to not have to rip much off the last row.
Fifth, compare overall thickness and the height from the top of the tongue or nail groove to the top of the face on the floor. On an engineered floor this is generally the thickness of a wear layer. Most solid wood floors are 3/4" overall before sanding (but some are less) with 1/4" above the nail groove. Our engineered floor is manufactured to equivalent measurements but most engineered floors have a thinner wear layer. This comes down to how many times the floor can be sanded. What kind of finish and texture you want on the floor factors into how deep you will re-sand the floor during refinishing. A number of our reclaimed wood floors are sold with an original texture that shows the old saw marks and character in the floor, so most likely you won`t want to sand this out. As a rule of thumb, the thicker the wear layer then the longer the floor will last.