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Crotchet
| Глоссарий по архитектуре и конструкциям |
Obsolete term for crocket.
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Bond length, английский
Obsolete term for development length. bond plaster, concrete bond plaster a mill-mixed gypsum plaster containing a small percentage of lime; just before application it is mixed with water only and then applied to a maximum thickness of 1?4 in. (0.6 cm) over prepared concrete surfaces. it serves as the bond between the concrete and succeeding coats of gypsum plaster. bond prevention 1. in pretensioned construction, measures taken to prevent selected tendons from becoming bonded to the concrete for a predetermined distance from the ends of flexural members. 2. measures taken to prevent adhesion of concrete or mortar to surfaces against which it is placed. bondstone, bonder in stone masonry, a stone usually set with its longest dimension perpendicular to the wall face so as to tie the masonry wall to its wall backing. a very large bondstone may be set with its long dimension parallel to the wall face and still serve as a bonder, provided that its width is sufficiently large to tie it to the wall backing. bond strength 1. the resistance to separation of mortar and concrete from reinforcing steel (or other materials) with which it is in contact. 2. all forces that resist separation, such as adhesion, friction due to shrinkage, and longitudinal shear in the concrete engaged by the bar deformations. 3. the applied unit load in tension, compression, flexure, peeling, impact, cleavage, or shear required to break an adhesive assembly, with failure occurring in or near the plane of the bond. bond stress 1. the force of adhesion per unit area of contact between two bonded surfaces, such as between concrete and a steel reinforcing bar. 2. the shear stress at the surface of a reinforcing bar which prevents relative movement between the bar and the surrounding concrete.
Merchant bar iron, английский
Obsolete name for wrought iron bars and rods.
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