7 Terms
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Seismic safety
Terms relating to the constuction of buildings that can withstand earthquakes.
Industry: Construction
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Seismic safety
hollow masonry unit
Construction; Seismic safety
A masonry unit whose net crosssectional area in every plane parallel to the bearing surface is less than 75% of the gross cross-sectional area in the same plane.
hold-down
Construction; Seismic safety
Hardware used to anchor the vertical chord forces to the foundation or framing of the structure in order to resist overturning of the wall.
head joint
Construction; Seismic safety
Vertical mortar joint placed between masonry units in the same wythe.
hazard level
Construction; Seismic safety
Earthquake shaking demands of specified severity, determined on either a probabilistic or deterministic basis.
gypsum wallboard or drywall
Construction; Seismic safety
An interior wall surface sheathing material sometimes considered for resisting lateral forces.
grading rules
Construction; Seismic safety
Systematic and standardized criteria for rating the quality of wood products.
grade
Construction; Seismic safety
The classification of lumber in regard to strength and utility, in accordance with the grading rules of an approved agency.
