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Hevacomp Wiki Thermal Bridging/PSI values
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    Thermal Bridging/PSI values

      Product(s): Hevacomp Mechanical Designer
      Version(s): V8i (N/A)
      Environment: N/A
      Area: N/A
      Subarea: N/A

    Overview

    PSI values for thermal bridging can be adjusted by SBEM if they are not accredited figures.

    Method

    The method for entering PSI data has changed between the 2006 and 2010 and 2013 regulations.

    When choosing thermal bridges there are a number of considerations. If user detail are not entered and the thermal bridging is not accredited then the figures displayed on the screen will be used.
     If user details are not entered and the thermal bridging is accredited then the figures displayed on the screen will be used.

     If you wish your own figures to be considered for Thermal Bridging you should enter your figures into the corresponding input field and ensure that "Accredited detail" is ticked.

    If the option remains unticked then regardless of any input data, default figures will be used.

    In accordance with iSBEM/SBEM technical manual, if default figures are used for Thermal Bridging then they will be subject to an adjustment figure as defined in the 2010 ADL2A document.


    Default thermal bridges after adjustment (w/mk)

                Junction                      Metal clad                   Non metal clad         
    Roof/Wall   0.42 0.18
    Wall/Ground floor 1.725 0.24
    Wall/Wall (corner) 0.375   0.135
    Wall/not ground floor   0.04 0.11
    Lintel (window/door) 1.905 0.45
    Sill (window) 1.905 0.08
    Jamb (window/door) 1.905 0.09

    • SBEM
    • Hevacomp Mechanical Designer
    • Thermal bridging
    • PartL
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    • Duncan Brown Created by Duncan Brown
    • When: Mon, Jul 16 2012 9:36 AM
    • Shane Regan Last revision by Bentley Colleague Shane Regan
    • When: Mon, Aug 24 2020 5:13 AM
    • Revisions: 13
    • Comments: 0
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