Roof Truss Heel Height

Below are some diagrams to help illustrate the measurement points.

Roof truss heel height.

Raised energy heel typical truss heel height is about 12 but may be designed to most any height per the building designer specification. Height calculation for a common truss calculate the height of a common truss using the building width and the slope of the roof. Below are two diagrams to help illustrate the point. This is created by designing the truss with a heel height tall enough to meet the r value requirements.

Other than roof pitch and span the most importand measurement need to match an existing roof is called the heel height. Truss heel height the vertical depth of the truss at the outside face of the bearing. 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. If you can t get the heel height most residential trusses will have a 3 top cord.

Simply it is the thickness of the truss measured at the point where the bottom chord meets the top chord from the top of the top plate to the underside of the sheathing. Standard heel typical truss heel height is about 4. David broad created date. Key definitions truss heel height the vertical depth of the truss at the outside face of the bearing.

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. Design a raised heel. Raised energy heel typical truss heel height is about 12 but may be designed to most any height per the building designer specification. Height fascia bottom chord double top plate overhang.

Depending on your roof slope add 4 to 5 inches for heel height. The option 1 figure to the right shows a raised energy heel. 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.

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. Looking for help in defining a roof truss heel height in revit. 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. With this type of energy heel the wall sheathing will usually need to extend up the outside of the truss.

Standard heel typical truss heel height is about 4.