Thomco Construction Inc. 6/14/2021

i Table 5A I Horizontal Thrust Restraint Length Fitting Pipe Diameter 6" 8" 12„ Length to be Restrained in Each Direction 11-1/4° bend 5' 5' 10' 22-1/2°bend 10' 10' 15' 45° bend 15' 20' 25' 90° bend* 35' 45' 60' Tees (where all legs can be 20' 25' 55' restrained)* Dead Ends and Tees (where 60' 80' 115' 1 only one branch is installed)* * 90° bends, tees, bends connecting to cast iron pipe, and dead ends must use thrust blocks in addition to this table. Provide concrete thrust blocking at all tees, offsets, valves, dead ends, plugs 111 and crosses, and where shown on the plans, including City installed fittings, pipe and valves. Provide cast-in-place concrete thrust blocking having a minimum of 1/4-square foot bearing against the fitting, and be clear of joints so as to permit taking up or dismantling joint, with bearing area against undisturbed soil, and sized and installed in accordance with WSDOT standard plan B-90.40-01. Provide a minimum measurement of 12-inches between the pipe and the undisturbed bank for all poured in place concrete thrust blocking. Form concrete blocking and pour using commercial concrete. Place blocking between solid ground and the fitting to be anchored with the area bearing on the pipe and on the ground in each instance being as Shown or directed by the Engineer. Place the blocking, unless otherwise shown or directed, so that the pipe and fitting joints, including nuts and bolts, can be accessible for repair. Page SP-204, Division 9; Section 9-30.2(6); revise to: 9-30.2(6) Restrained Joints Supplement 9-30.2(6) by adding the following: For ductile iron pipe provide "MegaLug®Series 1100" mechanical restrained joints as manufactured by EBAA Iron, or City approved equal. Addendum 1 Page 2 CITY OF EVERETT • 3200 Cedar Street • Everett, WA 98201 • (425) 257-8800 • Fax (425) 257-8882 1