Truss loadings are engineered into a truss to carry specific loads imposed upon the truss. Live load is a non-permanent and changing load, such as snow. This particular design load is extremely critical to the structural integrity of a roof truss in snow country. Dead load is a permanent load and is the combined weight of the materials of which a roof is made, such as roofing, sheathing, truss weight, etc. Ceiling load, also a permanent load, is the weight of insulation, drywall or other ceiling covering, light fixtures, etc. which can be engineered into the truss. Drift loads and duration of snow load should also be taken seriously. It should be noted that additional attic loadings both live loads and dead loads may be required for storage and or living space.
Most people never consider that building codes are minimum property standards. The codes used as a guide in most parts of Upper Michigan are the Michigan Residential Code and Michigan Building Code. These give local code officials the authority to set standards which meet or exceed the minimums set forth therein.
Skandia Truss is a member of the Structural Building Components Association, which is dedicated to promoting the common interest of those engaged in manufacturing wood trusses and related components to ensure growth, continuity and increased professionalism in the industry.