Fig. 9

Concrete strain on the sidewall of the joint: (a) jack joint wc-1 (b) jack joint wc-2 (c) jack joint wc-3 (d) socket joint wc-1 (e) socket joint wc-2 (f) socket joint wc-3.

Concrete strain on the sidewall of the joint: (a) jack joint wc-1 (b) jack joint wc-2 (c) jack joint wc-3 (d) socket joint wc-1 (e) socket joint wc-2 (f) socket joint wc-3.