Saturday, April 13, 2013

Stairways

Introduction

This topic will examine the terms and conditions, which fixed stairways, and platforms ar designed, fabricated and installed.

As with all steel structures, specifications have been developed to arrange the way in which these operations are carried out. Not unaccompanied do these documents set out the minimum specifications, they also synopsis testing and safety aspects.

Stairways, platforms and ladders: common terms

Balustrade a handrail and the run-in of balusters or posts that support it.

Flight the set of stairs from the radical or level to the floor, level or landing

Above or below. The maximum number of rises in a straight flight

Must not be more than 18.

Floor the surface of a platform, landing or walkway.

Going applying to stairs, the crosswise distance measured from the

Nosing of one-step or tread to the nosing of the next.

Guard railing prevents a person move from a platform, landing or stairway; also

referred to as the midrail.

Handrail a rail provided as a handhold on a platform, walkway, stairway,

Step ladder or landing; also referred to as a top rail.

Individual runged a ladder without stringers or stiles; distributively rung is individually

Ladder attached to a structure or equipment; this eccentric person is used when angles

are from 70 to 90.

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Infill used mainly on curved stairways in place of midrails; its purpose

is to prevent a person falling from the stairway.

Ladder a structure with treads or rungs, with or without stringers or handrails.

Ladder cage a fixed enclosure that encircles the climbing space of a ladder.

Landing a level area, which is used to provide access to a stairway, or ladder; it may also be located intermediately in a system of stairways or ladders.

Nosing front frame in of a step or tread on a stairway.

Platform a flat area...

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