2400 33RD ST CONTRACT AGREEMENT 2016-01-01 MF Import

ATTACHMENT A TO SECTION 01900 REVISIONS TO THE STANDARD PLANS AND SPECIFICATIONS limiting devices to prevert overtravel of the disc in the op2n and closed positions. Valves shall close with a clockwise rotation. Buried valves shall be nut operated using 2" standard AWWA nut and a bolted, gasketed, and lifetime lubricated operator housing. Valve Boxes Section 9-30.3(4) is supplemented with the following: Valve boxes in paved areas shall be cast iron, two piece units, designed with lugs on cover, equal to "Rich No. 940" as manufactured by Rich or Sather. In grass, non-paved or non-iraftic areas use valve boxes with a cast iron lid and plastic valve box extensions as manufactured by Handley Indusiries are acceptable. Valve Stem &xtensions Section �-30.3(6) is revised to read: Vaive operating nut �:�xtensions are required when the va!�:a nut is more than iwo (2) teet below finishea grade. Extensions ara to be a minimum of one (1) toot long. Only one extension will be allowed per valve. Valve operating nut extensions are :o be mada of steel and painted with two (2) coats of mnta! painL Valve stem extensions shall have a two (2; inch square operating nut and sefl- centering rockplate support and be attached to the valve stem nut with a locking setscrew or through noic. Tapping Sleeve and Valve Assembly Section 9-30.3(8) is revised �o read: For ell wet taps �n mains, the tapping sleeve shall be as follows: 1. SIZE on SIZE (i.e. 8"x8" or 12"x12"), the tapping sleeve shall be a Mueller or MRH, DI��I and shall be MJxFL unless othe�wise approved by the Engineer. 2. OFF SIZE (i.e. 6"x8" or 8"x12"), ihe tapping sleeve shall be a �.4ueller, M&H, or Aomac SST and shall be MJxFL uniess otherwise approved by the Engineer. Tapping valves shall be oi ihe same type as other valves on the projec!. Tapping valv��s shall be flange by mechanical joint gate valves conforming to the requirements of Section 9-30.3(1) of ihese Special Provisions. �fapping sleeve and valve assembly shall include a valve box and valve box extension conforming to Sections 9-30.3(4) and 9-30.3(6) and these Special Provisions. Hydrants Section 9-30.5 is replaced with ihe following: Hydrants and all inaterials shall conform to AWWA standards and shall be of standard manufaciure (Mueller A-423, Clow Niedallion, Waterous Pacer WBR7, or approved equal). Hydrant valve shall be 5�1/4" minimum. Hydrants shall have a 1-1/4" operating nut and 1•1/4" cap nuts for ttie 2-1/2" poris. The 2-1/2" ports shall have national standard threads. The 4-1/2" steamer port shall have a 5" Storz fitting and national standard thFeads. Hydrants shall be painted with iwo coats of high gloss Caterpillar Yeliow "Rust-Oleum" �ype paint with the hose port caps and bonnet painted black. Hydrant conneclion pipe shall be 6" diameter ductite iror. Class 52. Any intermediate joints on the connection pipe to be mechani::al joinis with mechanical joint restraining devices. Mechanical joint resiraining devices shall con(orm to Resirained Joints in thesa Special Provisions. Water Service Connections (2-inches and smaller) Section 9-30.6 is deleted and replaced as foilo+vs: Capital Projects Commuter Rail Aitachment A to Section 01900 - 34 IFB No. RTA/CP 21-06 � Everett Station Phase 2R�=VISIONS TO'�iiE STANDARD PLANS AND SPECIFICATIONSAddendum No.4