E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
E01B3/00—Transverse or longitudinal sleepers; Other means resting directly on the ballastway for supporting rails
E01B3/28—Transverse or longitudinal sleepers; Other means resting directly on the ballastway for supporting rails made from concrete or from natural or artificial stone
E01B3/32—Transverse or longitudinal sleepers; Other means resting directly on the ballastway for supporting rails made from concrete or from natural or artificial stone with armouring or reinforcement
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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