(a) Concrete reaction or thrust backing shall be applied on all pipe lines eight inches larger in size at all tees, plugs, caps and bends whose deflection is twenty-two and one-half degrees or more. This backing shall be so placed that joints will be accessible for repairs.
(b) Reaction of thrust backing shall be 3,000 psi concrete and it shall be placed between solid ground and the fitting to be anchored.
(c) The area of bearing required on the pipe and on the ground in each instance shall be determined by the Engineer.
(d) Movement of the fittings listed above shall be prevented by the use of suitable steel rods and clamps as approved by the Engineer and the owner.
(Ord. 352. Passed 10-22-62.)