Roof Truss Heel Height

Advantages of gang nail roof and floor trusses 4 gang nail connectors 5 design information 6 terminology 7 roof shape 7 truss types and coding 9 camber 11 overhang 11 heel height 12 birdsmouth 12 span 12 low pitch trusses 12 over height trusses 13.

Roof truss heel height.

David broad created date. Raised energy heel typical truss heel height is about 12 but may be designed to most any height per the building designer specification. Standard heel typical truss heel height is about 4. Truss heel height the vertical depth of the truss at the outside face of the bearing.

Height calculation for a common truss calculate the height of a common truss using the building width and the slope of the roof. The cost of additional insulation is very little and depending on your climate zone and the local energy code you may require less insulation if your. Microsoft word standard heels doc author. The option 1 figure to the right shows a raised energy heel.

Depending on your roof slope add 4 to 5 inches for heel height. Other than roof pitch and span the most importand measurement need to match an existing roof is called the heel height. Standard heel typical truss heel height is about 4. Below are some diagrams to help illustrate the measurement points.

Key definitions truss heel height the vertical depth of the truss at the outside face of the bearing. Height fascia bottom chord double top plate overhang. With this type of energy heel the wall sheathing will usually need to extend up the outside of the truss. If you can t get the heel height most residential trusses will have a 3 top cord.

Below are two diagrams to help illustrate the point. I have researched the web and was unable to find any information or assistance on how or if it is possible to define a truss heel height in revit. Raised energy heel typical truss heel height is about 12 but may be designed to most any height per the building designer specification. One of the most important measurements needed to match an existing roof is called the heel height.

Simply it is the thickness of the truss or rafter measured from the outside of the wall from the top of the top plate to the underside of the sheathing. This is created by designing the truss with a heel height tall enough to meet the r value requirements. I have developed a spreadsheet that will calculate the required base offset to corr. The extra height of a raised heel truss roof provides additional space for uncompressed attic insulation and the full depth of insulation to be extended right to the outside of the top plate.

Design a raised heel.