Before ordering roof trusses several options must be considered and
decided upon before placing the order. These options include type,
number, span, pitch, heel height (height above plate), load, bearing
width, and ceiling type of roof trusses.
Options for Ordering Trusses
Type - What type of truss do you want on the building? Common gable truss, hip, gambrel, bowstring, scissor, and etc.
Number - How many of each type of truss are needed for this particular building.
Span - Distance between outside walls or bearing points where the trusses will be placed.
Pitch - What will the pitch of the roof be 6/12, 8/12, etc.
Height Above Plate
- What is the desired heel height above the wall plates at the outside
edge of the building? Would you rather used a raised heel truss to
accommodate more insulation?
Load - What
are the required live, dead, and wind speed load requirements in your
area? These questions can be answered by your local building inspector.
Bearing Width - How wide are the bearing walls or beams where the roof trusses are to sit?
Ceiling Type - What type of ceiling is required in each room? Cathedral, vaulted, barrel, etc.
Tips for Roof Trusses
Allow plenty of lead time, it can take anywhere from two to eight weeks before the trusses will be delivered.
deviate from the plan, if you change the dimensions on the building
after the roof trusses are built you will be out of luck.
Trusses can be very heavy and awkward to handle, to minimize the danger to yourself and employees consider using an all terrain fork lift or small crane to set them.
Adequate temporary bracing should be available and correctly installed. If trusses fall over they usually go like dominos, not a pretty sight.