1 August 2016 . 900am . Monday . Building Tech Chapter 9 : Staircase
Stair is one of the most challenging subject. Have to pay more attention !!
2 type of vinyl floor - roll and tile
Overview
Staircase, stair or stairway
Steps is without hand-rill
Ramp
Definition
vertical circulation consisting of a number of steps from one level to another
Exam question !!
Angle / Degree
1:12 :
1:8 - car cannot go up is beyond 1:8
Genting highland road
fire escape staircase door / smoke door characteristic
- door design open outward
- automatic door closer - close all the time
- no door knobs / no handle - push out /
- ironmongery cannot be locked.
Width
- minimum 800 mm from out ward of hand-rill to out ward of hand-rill ( not from wall to hand rill )
- minimum 800 mm too
Remark : 2 leaf door. smoke chamber, additional line of defend , only for tall buidling
high the hand-rill is 825mm - 900mm
calculated from
One step consist of on riser and threat
1 flight of staircase cannot more that 16 riser, there must be a landing in between
a place for elderly to rest
guard rill and hand rill
above our waist measurement for adult - avoid fall over
Step consist of riser and threat
Raiser height - 150mm - 160mm
Threat depth - 250mm - 280mm
how to shorten the step? ( in short building )
adjust the raiser height, thereat width and nosing ( angle )
handrail and the wall between must have 38 mm
handrail 825 - 500
eliminate one step
Landing with winder
Tapered Steps
circular staircase vs spiral staircase
circular staircase can use as primary staircase
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