352 Underground excavation insfabilify mechanisms
W = $yAjh = f x 22 x 11.42 x 0.77 = 64.5 kN, and
p = (^1) 3y h = 5 x 22 x 0.77 = 5.6 kN/m2.
419.4 Repeat Qs 19.1 and 19.2 for the haunch A (as illustrated in
Q19.1).
A19.4 We use the same method but with an inclined projection (see
Chapter 7 for examples of the use of an inclined projection) giving the
following results.
Inclination of principal elements Inclined projection
Block 123 Block 124