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2. List of structural engineering software - Wikipedia

   en.wikipedia.org/wiki/List_of_structural...

   BIM & 3D modeling software applied for civil & structural engineering OpenSees: Earthquake engineering software PROKON: Structural analysis and design software Realsoft 3D: General 3D analysis and design software Revit: BIM & 3D modeling software applied for civil & structural engineering RFEM: 3D structural analysis & design software SDC Verifier

3. Roof pitch - Wikipedia

   en.wikipedia.org/wiki/Roof_pitch

   Historically, roof pitch was designated in two other ways: A ratio of the ridge height to the width of the building (span) [6] and as a ratio of the rafter length to the width of the building. [7] Commonly used roof pitches were given names such as: Greek: the ridge height is 1 ⁄ 9 to 1 ⁄ 7 the span (an angle of 12.5° to 16°);

4. Steel square - Wikipedia

   en.wikipedia.org/wiki/Steel_square

   The complementary angles of the arc tan are used on most angle measuring devices in construction. The tangent of hip, valley, and jack rafters are less than 1.00 in all pitches above 0°. An eighteen pitch has a side cut angle of 29.07° and a two pitch has a side cut angle of 44.56° for jack rafters. This is a variation of 15.5° between pitches.

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6. News, Politics, Sports, Mail & Latest Headlines - AOL.com

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   Discover the latest breaking news in the U.S. and around the world — politics, weather, entertainment, lifestyle, finance, sports and much more.

7. Building information modeling - Wikipedia

   en.wikipedia.org/wiki/Building_information_modeling

   The UK Government BIM Task Group led the government's BIM programme and requirements, [100] including a free-to-use set of UK standards and tools that defined 'level 2 BIM'. [101] In April 2016, the UK Government published a new central web portal as a point of reference for the industry for 'level 2 BIM'. [ 102 ]

8. Roofer - Wikipedia

   en.wikipedia.org/wiki/Roofer

   A roofer, roof mechanic, or roofing contractor is a tradesman who specializes in roof construction. Roofers replace, repair, and install the roofs of buildings , using a variety of materials, including shingles , single-ply , bitumen , and metal .

9. Roof seamer - Wikipedia

   en.wikipedia.org/wiki/Roof_seamer

   A hammer and small anvil were tools that were used for hemming and seaming roof panels together at the edge where they meet with the next roof panel in sequence. In 1976, a German immigrant and inventor, Ewald Stellrecht, [ 1 ] helped develop an early version of a metal roof panel portable roll forming machine in Exton, PA.