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2. Notch (engineering) - Wikipedia

   en.wikipedia.org/wiki/Notch_(engineering)

   For standardized testing of fracture toughness by the Charpy impact method, specimen and notch dimensions are most often taken from American standard ASTM E23, or British standard BS EN ISO 148-1:2009. For all notch types, a key parameter in governing stress concentration and failure in notched materials is the notch tip curvature or radius. [1]

3. Span (engineering) - Wikipedia

   en.wikipedia.org/wiki/Span_(engineering)

   In engineering, span is the distance between two adjacent structural supports (e.g., two piers) of a structural member (e.g., a beam). Span is measured in the horizontal direction either between the faces of the supports (clear span) or between the centers of the bearing surfaces (effective span): [1] A span can be closed by a solid beam or by ...

4. Timber framing - Wikipedia

   en.wikipedia.org/wiki/Timber_framing

   Poteaux-en-terre (posts in ground) is a type of timber framing with the many vertical posts or studs buried in the ground called post in ground or "earthfast" construction. The tops of the posts are joined to a beam and the spaces between are filled in with natural materials called bousillage or pierrotage.

5. Timber roof truss - Wikipedia

   en.wikipedia.org/wiki/Timber_roof_truss

   Key: 1: queen posts, 2: tie beam, 3: straining beam, 4: principal rafters. A queen post truss has two principal rafters and two vertical queen posts. [5] The queen post truss extends the span, and combined with spliced joints in the longer members extends the useful span for trusses of these types. As with a king post, the queen posts may be ...

6. Post (structural) - Wikipedia

   en.wikipedia.org/wiki/Post_(structural)

   Lateral Queen – a pair of braced posts between a tie beam and collar beam. Prince – A strut associated with a king post truss. princess – A strut associated with a queen strut but shorter. [25] Crown – A post on a tie beam or collar beam carrying a crown plate. [26] Crown strut: A piece similar to a crown post but not carrying a plate. [27]

7. Pole building framing - Wikipedia

   en.wikipedia.org/wiki/Pole_building_framing

   Other girt systems include framing in between the posts rather than on the outer side of the posts. [6] Siding materials for a pole building are most commonly rolled-rib 29-gauge enameled steel cut to length in 32-or-36-inch (813 or 914 mm) widths attached using color-matched screws with rubber washers to seal the holes.

8. Hammerbeam roof - Wikipedia

   en.wikipedia.org/wiki/Hammerbeam_roof

   A hammer-beam is a form of timber roof truss, allowing a hammerbeam roof to span greater than the length of any individual piece of timber.In place of a normal tie beam spanning the entire width of the roof, short beams – the hammer beams – are supported by curved braces from the wall, and hammer posts or arch-braces are built on top to support the rafters and typically a collar beam.

9. Double tee - Wikipedia

   en.wikipedia.org/wiki/Double_tee

   Double tee structure is an alternative for short to medium spans between 40 and 90 feet (12 and 27 m). There are many standards such as double-tee beam of Texas Department of Transportation and the Northeast Extreme Tee (NEXT) Beam of the Northeast. [8] A benefit of using double tees for bridge replacements is to shorten the construction time.