E04C3/00—Structural elongated elements designed for load-supporting
E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
E04C3/20—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of concrete or other stone-like material, e.g. with reinforcements or tensioning members
Landscapes
Engineering & Computer Science
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Architecture
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Civil Engineering
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Structural Engineering
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Liquid Crystal Substances
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Diaphragms For Electromechanical Transducers
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Shielding Devices Or Components To Electric Or Magnetic Fields
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