Horizontal Handrail Extensions At An Egress Stair Are Not Required At Which Location
Olivia Luz
The greatest riser height within any flight of stairs shall not exceed the smallest by more than 0 375 inch 9 5 mm.
In alterations full extensions of handrails shall not be required where such extensions would be hazardous due to plan configuration. A minimum 12 inch 305 mm horizontal extension is required at each top riser indicated in the figure by the dimension x. The inside handrail on switchback or dogleg stairs shall always be continuous. Stair riser heights shall be 7 inches 178 mm maximum and 4 inches 102 mm minimum.
1025 2 3 handrails handrails and handrail extensions shall be marked with a solid and continuous stripe having a minimum width of 1 inch. 3 7 stairs shall be installed at angles to the horizontal plane of between 30 deg. Inside handrails at switchback dogleg stairs must be continuous extension not required. In alterations full handrail extensions are not required where they would project hazardously into circulation paths 505 10 ex.
The tread depth shall be measured. Where handrails or handrail extensions bend or turn. Length measured to the start of the return radius. Top and bottom extensions must return to wall guard or floor min.
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The riser height shall be measured vertically between the leading edges of adjacent treads. A handrail is required on stairs with two or more risers and ada ramps with a rise of 6 inches. Handrails are not required on walking surfaces with running slopes less than 1 20. The remainder of the extension shall be horizontal.
The handrail shall continue to slope for a distance of the width of one tread from the bottom riser. The stripe shall be placed on the top surface of the handrail for the entire length of the handrail including extensions and newel post caps. Handrail gripping surfaces shall extend beyond and in the same direction of stair flights and ramp runs in accordance with 505 10. Pip stf05511 technical correction fixed industrial stairs january 2017 process industry practices page 4 of 11 3 9 stair railing shall comply with the requirements of pip.
Extension should return to a wall guard or the landing surface or should be continuous to the handrail of an adjacent stair flight. The i codes define handrail as being in place to provide guidance.
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