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EXERCISE DESCRIPTION
To complete this exercise construct two short wall
segments, each 8 feet long and three courses high, one
with a 4 foot wide set of interlocked stairs in the center
EXERCISE SETUP
Review safety concerns with students before beginning
this exercise. Combining this exercise with other wall
GRADING SCALE
Grading for installing stairs for retaining walls should
include the following scaled criteria:
tilted backward
Treads uneven side to side
6 Stability Stairs secure and firm
Stairs have slight movement
points
2 Mechanics Base and drainage properly
altered
Only base or drainage
properly altered
Exercise 27
Stairs
3555X_01_ch01-40_p001-048.indd 34 14/06/10 7:48 PM
