PE Problem #32

7/16/2018

A theater has aisles serving its main seating area. One of the aisles has a stair 51 inches wide, with a wall and handrail on one side and fixed seating on the other. If the handrail has a center-line of 4 inches from the wall, what is the effective width of the stair?
a. 37.5 in.
b. 43.5 in.
c. 45 in.
d. 47 in.

Solution | Posted 07/17/18

3 Comments

FPE

7/16/2018 09:09:34 am

c. 45 in.
Ref. SFPE FPH Table 59.1

7/16/2018 10:09:17 am

B - FPH 4-58

Colleen

7/16/2018 03:42:07 pm

B). 43.5"

per FPH p. 4-59, the boundary layer for the handrail is an additional 3.5" (7.5" total for that side including the 4" distance from the wall to the centerline of the handrail). The boundary layer for the fixed seating/theater chairs is 0", so the total boundary layer is 51"-7.5"=43.5"

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