Downloaded 446 times
More Related Content
Types of roof
- 1. Types of Roofs https://yourarchischool.blogspot.com FORMORE LOG ON TO
- 2. A roof musthave the following qualities: • A roof must be weather resistant to rain, snow, wind and sun. • The durability of a roof should be equal to or in excess of those materials used in the remainder of the building. • A roof should have good thermal insulation properties. • A roof should require a minimum of maintenance. • A roof should be constructed in such a way as to retain structural stability when dead and imposed loads are applied to it ( dead loads is the weight of materials used to make the roof, imposed loads are loads created by wind, snow, etc.
- 3. Roof Elements When designinga roof the following points should be considered in relation to its final appearance. Pitch The steeper the pitch the greater the roof area visible. This will result in a larger roof space, you can also use smaller cladding units such as plain tiles and slates. Pitched roofs are the most suitable in countries where there is a high rain fall. Coverings Materials used for roof coverings should harmonise with the local surroundings. These materials should be fit for purpose in their ability to keep out the elements, thermal insulation, durability and appearance. Verge Ridge Valley Rafter Hipped End Jack RaftersCommon Rafters Gable End Lean-to Roof Flat Roof Hip Eaves
- 4. Roof parts Ridge Dormerwindow Barge board Eaves detail Door Down pipe Gutter chimney
- 5. Wall plate Usually 100x 50 mm softwood timbers are fixed to the of load bearing walls to distribute loads and provide fixings for roof timbers. Ceiling joist These are timbers which provide a support for fixing ceiling finishes and act as a collar to prevent rafters spreading. Common rafters These are inclined timbers fixed between wall plate and ridge which transmit live and dead loads to wall Ridge The ridge is a horizontal board set on edge to which the rafters are attached (not required on trussed rafters). Hip Rafter A hip rafter is a rafter running from the wall plate to the ridge which forms the external angle of the sloping side of a roof. Purlin This is a horizontal roof member supporting the rafters and usually at right angles to these. This enables small section timbers to be used for the rafters. Hangers These are timbers hanging from the purlins to the ceiling joist to give additional support to binders. Soffit A horizontal board fixed to the underside of the rafter outside the building. Bargeboard Verge or gable board. Eaves The lower part of the roof, which usually includes the end of the rafter, ceiling joist, soffit, fascia and gutter. Dormer A vertical window coming through a sloping roof. Valley This is the name for the intersection between two sloping surfaces, forming an internal angle ( the opposite to a hip). Fascia A board fixed vertically to rafter ends, which provide an additional fixing for gutters.
- 6. Pitched roof Roof witha gable end If the roof space is or may be intended to be used in the future, the structure should be designed accordingly.
- 7. PITCHED ROOF: TIMBER- truss STEEL - truss Truss built as from individual members Truss fabricated from factory Truss fabricated from factory Whole roof structure built from steel Gang nails steel
- 8. Pitched roof with dormerwindows A pitched roof with dormer windows. Timber to support the dormer window Common Rafter Lay boardWhen a steep pitched roof is used in domestic construction dormer windows can be used to create additional head room in the roof space. This allows the roof space to be utilised for habitable rooms.
- 9. A pitched roof column wall columns walls Amono-pitched roof structure A lean-to roof structure
- 10.
- 11. Flat roof • Slope– 0-10⁰ • Structural decks ordinary used – Wood panels over wood joist – Solid wood decking over heavy timber framing – Corrugated steel decking – Sitecast concrete slab – Precast concrete slab – Panels of wood fibre bonded together with portland cement etc Water pool formed due to poor workmanship
- 12.
- 14.
- 17.
- 19.
- 21.
- 22.
- 29. PARASOL ROOFING FREE FORMROOFING HYPERBOLIC PARABOLOID ROOFING HYPERBOLIC PARABOLOID ROOFING
- 30. 3. Space frame Aspace frame or space structure is a truss-like, lightweight rigid structure constructed from interlocking struts in a geometric pattern. Space frames usually utilize a multidirectional span, and are often used to accomplish long spans with few supports. They derive their strength from the inherent rigidity of the triangular frame; flexing loads (bending moments) are transmitted as tension and compression loads along the length of each strut.
- 31.
- 32.
- 33.
- 35. 5. FOLDED PLATEROOF
- 36.
- 37.