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2. Timber roof truss - Wikipedia

   en.wikipedia.org/wiki/Timber_roof_truss

   Two king post trusses linked to support a roof. Key:1: ridge beam, 2: purlins, 3: common rafters. This is an example of a "double roof" with principal rafters and common rafters. A timber roof truss is a structural framework of timbers designed to bridge the space above a room and to provide support for a roof.

3. Open web steel joist - Wikipedia

   en.wikipedia.org/wiki/Open_web_steel_joist

   The LH- and DLH-Series have been designed for the purpose of extending the use of joists to spans and loads in excess of those covered by Open Web Steel Joists, K-Series. LH-Series Joists have been standardized in depths from 18 inches (460 mm) through 48 inches (1,200 mm), for spans through 96 feet (29,000 mm).

4. Loft conversions in the United Kingdom - Wikipedia

   en.wikipedia.org/wiki/Loft_conversions_in_the...

   2015 saw a surge in demand for loft conversions by homeowners in the UK as a result of the new and simplified planning regulations. There are different types of loft conversions chosen because of price, space available, aesthetic appeal, property style, the height of the roof, and the planning permission required. [1]

5. Structural engineering - Wikipedia

   en.wikipedia.org/wiki/Structural_engineering

   Most trusses use gusset plates to connect intersecting elements. Gusset plates are relatively flexible and unable to transfer bending moments. The connection is usually arranged so that the lines of force in the members are coincident at the joint thus allowing the truss members to act in pure tension or compression.

6. Rafter - Wikipedia

   en.wikipedia.org/wiki/Rafter

   A rafter is one of a series of sloped structural members such as steel beams that extend from the ridge or hip to the wall plate, downslope perimeter or eave, and that are designed to support the roof shingles, roof deck, roof covering and its associated loads. [2] A pair of rafters is called a couple.

7. Sustainable refurbishment - Wikipedia

   en.wikipedia.org/wiki/Sustainable_refurbishment

   Sustainable refurbishment describes working on existing buildings to improve their environmental performance using sustainable methods and materials. A refurbishment or retrofit is defined as: "any work to a building over and above maintenance to change its capacity, function or performance' in other words, any intervention to adjust, reuse, or upgrade a building to suit new conditions or ...