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en.wikipedia.org/wiki/Domestic_roof_construction

Domestic roof construction is the framing and roof covering which is found on most suburban ... Please help improve this article by adding citations to reliable sources. ... The steepness or roof pitch of a sloped roof is determined primarily by the ... Heavier under purlins or purlin plates are used to support longer rafter spans.

www.answers.com/Q/A_framework_that_is_used_to_help_support_the_construction_of_a_sloped_roof

Most sloped roofs are supported by a purlin bracing system. A board the same size as or larger than that of the rafters is placed on edge perpendicular to the ...

www.diynetwork.com/how-to/rooms-and-spaces/exterior/all-about-roofs-pitches-trusses-and-framing

DIYNetwork.com breaks down the different types of pitched roofs and roof frame designs. ... basic design and numerous combinations of design elements with construction methods. ... It is commonly used on lean-to structures, such as additions. .... How to Landscape a Sloping Backyard · The 2011 Winner of America's Most ...

www.constructionknowledge.net/public_domain_documents/Div_6_Woods_Plastics/Partial%20Carpentry%20pdfs/Framing_Roofs_NAVEDTRA_14044.pdf

some basic terms and definitions used in roof construction; we will then ... The hip roof has four sloping sides. It is the ... framework of all roofs are called rafters. They do for ...... of the house, common rafters also help to support the basic rafters.

www.hometips.com/how-it-works/roofing-terms.html

Nov 12, 2014 ... On a sloped roof, the horizontal underside that projects out from the house wall. ... To understand how to properly use these terms, a brief lesson in roof geometry helps. ... The word “pitch” was first used in the early 17th century to denote “the highest ... The framework that supports the roof deck and roofing.

www.visualdictionaryonline.com/house/structure-house/frame.php

bridging click to hear. Structure composed of two members forming an X and placed between the joists to reinforce them and keep them from deforming.

www.beaufortonline.com/building-and-construction-terms-dictionary

Mar 25, 2013 ... ARCH: A curved structure that will support itself and the weight above its ... Primarily used in construction for chests and closet linings for its .... CROSS BRACING: Boards nailed diagonally across studs or other boards to make framework rigid. ... DORMER: An opening in a sloping roof, the framing of which ...

www.britannica.com/technology/roof

Learn how a white roof helps cool a building in hot sunny weather. ... Two main types of roofs are flat roofs and sloping ones. ... This type of roof was used as early as the temples of ancient Greece and has ... Vaults and domes do not require a supporting framework directly below the ... building construction: Timber frames.

www.fao.org/docrep/s1250e/S1250E0l.htm

The spacing of the purlins which support the roofing depends on the size and rigidity of the roofing material. ... It has good thermal insulating qualities and helps to maintain rather uniform ... A steeply sloping roof frame of 45° or more be used. .... of the roofing screws to be used to allow for movement within the framework of ...