Ramp Vignette attempt #1

Ramp, Stair, & Roof Vignettes and Multiple Choice

Ramp Vignette attempt #1

Postby mcomp » Sat Apr 12, 2014 10:13 am

Hi everyone. This is my first attempt at the ramp vignette. Please comment if you could.

I wasn't sure about the handrails at the stair; whether it needs to turn at the bottom to avoid the 60" clearance. Also the handrail on the first ramp going down is only a 4" drop, so I did not add a handrail on the wall side.

Thanks!
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Re: Ramp Vignette attempt #1

Postby Coach » Mon Apr 14, 2014 3:13 pm

Egress narrows at base of stair.
Missing guardrail.
Consistently hold rails 2" off walls and edges.
Stop landing rails at extension when adjacent to higher surface.
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Re: Ramp Vignette attempt #1

Postby mcomp » Wed Apr 16, 2014 6:54 am

Thanks!
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Re: Ramp Vignette attempt #1

Postby Higginsworth » Sat Apr 19, 2014 7:40 pm

Coach wrote:Egress narrows at base of stair.
Missing guardrail.
Consistently hold rails 2" off walls and edges.
Stop landing rails at extension when adjacent to higher surface.


Dear Coach, You keep mentioning that the path of egress narrows at stairs and it does (From 5'-0" clear to 4'-3"). The NCARB solution tells you to do that, and Gang Chen's book walk you step by step on how to do that. Who is right? It's 4'-3" from the edge of the handrail to the wall not 5'-0". Is the NCARB solution not in fact a passing solution? Should we just make the stairs 44" wide here so there is no reduction in width? What do you suggest?
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Re: Ramp Vignette attempt #1

Postby Coach » Sun Apr 20, 2014 1:40 am

Higginsworth wrote:
Coach wrote:Egress narrows at base of stair.
Missing guardrail.
Consistently hold rails 2" off walls and edges.
Stop landing rails at extension when adjacent to higher surface.


Dear Coach, You keep mentioning that the path of egress narrows at stairs and it does (From 5'-0" clear to 4'-3"). The NCARB solution tells you to do that,

It doesn't tell you, it shows a "passing" example that is incorrect.

and Gang Chen's book walk you step by step on how to do that.

He's wrong.

Who is right? It's 4'-3" from the edge of the handrail to the wall not 5'-0". Is the NCARB solution not in fact a passing solution?

It shouldn't be.

Should we just make the stairs 44" wide here so there is no reduction in width?

Making the stair 44" doesn't guarantee anything, but I suggest that you do use the min required width.


Here's the deal. Regardless of what the code says about rails being allowed to encroach 4" on each side of the ramp or stair, the effective width is still the overall width. Once established, the overall width you use must be maintained all the way to the exit.
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