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Framing Common Roofscapes
Hipped Ends
The simplest form of hipped end consists of a multiply girder of standard trusses securely nailed or bolted together, which support loose rafters and
ceiling joists, as in figure 38.  This is the most inexpensive form of hip because no special trusses are needed other than the girder, but their use is limited to spans up to 5m.
Loose rafter and ceiling joist sizes should be taken from Approved Document A to the Building Regulations. Hip boards should be supported off the girder by means of a ledger. The ceiling joists should be supported by proprietory joist hangers.
If the end pitch is different to the pitch of the main roof, the eaves details should be discussed with your trussed rafter supplier. It is advisable to ensure that the top extremities of rafter overhangs are at the same level to provide for continuous guttering. Note that whilst adjustments can be dealt with on site in loose timber construction, the mono-pitched trusses used in other hip types must be made correctly in the factory.

It should also be noted that all forms of hip construction employing a hip board exerts a horizontal thrust at the wallplate corner junction. Having taken up any horizontal movement, of course, the structure becomes stable. Movement of the wallplate can be controlled by fixing a 1200mm length of galvanised steel restraint strap around the outside. See figure 41. MiTek trussed rafter suppliers can provide detailed advice on hipped end roof details.