Metal Stair o They are not frequently/commonly used stairs. o The external fireescape stairs are generally made of metal. o Common metals are CI, bronze, and mild steel. o Widely used in factories, workshop, and godowns. Main features are,  Stringers are usually of channel section  Tread and riser of a step may be of one unit or may not be  Tread and risers are supported on angles, which are connected to stringers.  Risers may be totally omitted.  Spirals stairs of CI consists of CI newel fixed in center around which the CI steps are fixed.  For metal stairs metal balusters with pipe handrail are used. - Study24x7
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soyab khan
16 Apr 2019 10:21 AM study24x7 study24x7

Metal Stair o They are not frequently/commonly used stairs. o The external fireescape stairs are generally made of metal. o Common metals are CI, bronze, and mild steel. o Widely used in factories, workshop, and godowns. Main features are,  Stringers are usually of channel se...

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