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Stress factor of safety
| Глоссарий по архитектуре и конструкциям |
The ratio between the stress at failure to the maximum permissible stress. stress-graded lumber lumber graded for strength according to growth rate, grain slope, and defects.
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Permissible, английский
- Допустимый
- Допускаемый, допустимый
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Bulk specific gravity, английский
The ratio of (a) the mass of a volume of material (including the mass of the water within the voids, but excluding the voids between particles) at a stated temperature to (b) the mass of an equal volume of distilled water at a stated temperature. bulk strain, volume strain the ratio of the change in volume of a body to its original volume, as a result of stress applied to the body.
Agitating speed, английский
The rate of rotation of the drum or blades of a truck mixer or other device used for agitation of mixed concrete. agitating truck, brit. agitating lorry a vehicle carrying a drum in which freshly mixed concrete can be conveyed from the point of mixing to that of placing, the drum being rotated continuously so as to agitate the contents. agitation 1. the process of providing gentle motion in mixed concrete, just sufficient to prevent segregation or loss of plasticity. 2. the mixing and homogenization of slurries or finely ground powders by air or mechanical means. agitator 1. a mechanical device used to mix a liquid contained in a vessel. 2. a device for maintaining plasticity and preventing segregation of mixed concrete by agitation.
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