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Perpend joint (head joint):
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A mortar joint perpendicular to the bed joint and to the face of wall
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Perpendicular, английский
- Перпендикуляр; перпендикулярный
- A right line falling from or standing upon another vertically, and making the angle of 90° on both sides.
- Перпендикуляр
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Persistent design situation:, английский
Design situation that is relevant during a period of the same order as the design working life of the structure note generally it refers to conditions of normal use.
Permanent action (g):, английский
Action that is likely to act throughout a given reference period and for which the variation in magnitude with time is negligible, or for which the variation is always in the same direction (monotonic) until the action attains a certain limit value
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