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Precast concrete is a construction product produced by casting concrete in a reusable mold or "form" which is then cured in a controlled environment, transported to the construction site and maneuvered into place; examples include precast beams, and wall panels, floors, roofs, and piles.
A stair tread is the horizontal portion of a set of stairs on which a person walks. The tread can be composed of wood, metal, plastic, or other materials. In residential settings, treads can be covered in carpeting. Stair treads can come in non-slip varieties, particularly in commercial or industrial locations. [1]
The original access stairs from the overbridge to Platform 1 had the original steel stringers but had new concrete treads and a new steel balustrade. The later stairs on the south were constructed from steel stringers supported on steel columns and with precast concrete treads. [ 3 ]
Autoclaved aerated concrete (AAC) is a lightweight, precast, cellular concrete building material. It is eco-friendly, and suitable for producing concrete-like blocks . [ 1 ] It is composed of quartz sand , calcined gypsum , lime , portland cement , water, and aluminium powder .
The footbridge was covered as part of a station upgrade c.1990. The surface of the footbridge was replaced recently with a tiled finish and the sides have been enclosed with frameless glass panels. The treads to the stairs have been replaced with precast concrete and a new tubular stainless steel handrail has been installed. The original iron ...
The nosing is the protrusion beyond the riser when vertical risers are used, or beyond the back of the tread below, when angled risers or no risers are used. Anti-slip strips or nosings may be applied. These stair parts can be manufactured from a variety of materials including aluminum, vinyl, and wood.
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