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7.2/11
Pitched Roofs to Garages – Holding Down Straps
(December 2008) (First issue)
Question:
Question:
Are holding down straps required to pitched roofs on detached garages?
Are holding down straps required to pitched roofs on detached garages?
Considerations:
BS 8103 ‘Structural design of low rise buildings’ refers to the use of holding down straps where dead loads do not exceed wind uplift forces.
Building regulations refer to holding down straps being needed dependent on pitch, type of roof covering and local experience of wind gusts.
Answer:
Holding down straps should be provided:
In accordance with NHBC Clause 10.1.9 and 7.2.6
Where the roof pitch is below 15° or the roof has a lightweight covering with a laid mass of less than 50 kg/m2.
Where local experience suggests there is a risk from wind gusts.
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