Sizes of joists needed for flat roof construction.
Timber flat roof detail section.
Intermediate floor joist parallel 4 3.
Timber frame flat roof detail.
Timber frame flat roof detail.
Parapet detail joists perpendicular 3 13.
As you may imagine there is a fair amount of weight involved here in terms of boards felt etc.
Today flat roofs are used by architects for the same reasons that they became a cornerstone of modernist architecture.
Having a manual for warm flat roof construction with details and a summary of rules to follow helps.
Parapet detail masonry cavity wall flat roof with parapet insulation above joists.
The basic construction of a flat roof starts with roofing timber that is laid across two upright items usually two walls.
Flat roof joist and decking 3 10.
That will help you remember certain factors and details to build the best possible flat roof.
Contemporary designers frequently aim to produce the same clear and simplified forms that appeared at the beginning of the 20th century but are now free to use a wide range of new materials and construction techniques that reflect present day technology.
Dormer in section 3 11.
Flat roof detail masonry cavity wall flat roof insulation above and between joists.
Roof panels 3 8 1 roof panel connections 3 9.
3 05 timber frame pitched roof.
Ventilated batten void warm roof gable 3 06 timber frame timber flat roof 3 07 timber frame timber flat roof with parapet 3 08 timber frame lintel at window head 3 09 timber frame windows and doors jambs and cills specification within an example should 3 10 timber frame ground.
B 4 flat roofs 171 b 4 1 flat roof types 171 b 5 flooring 174 b 5 1 connection details 174 b 5 2 openings 175 b 5 3 ground floor requirements 176 b 5 4 ground floors partitions 177 b 5 5 support of partitions 178 b 6 timber frame 178 b 6 1 component elements 179 b 6 2 accurate setting out 180 b 6 3 insulation details 182.
Modern timber roofs are mostly framed with pairs of common rafters or prefabricated wooden trusses fastened together with truss connector plates timber framed and historic buildings may be framed with principal rafters or timber roof trusses roofs are also designated as warm or cold roof depending on how they are designed and built with regard to thermal building insulation and ventilation.
Dormer in perspective view 3 12.
Parapet detail joists parallel details in section 4.
Old asbestos roofs are often replaced with flat roofs.
So any timber joists that are used need to be strong enough to support this weight.
