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

ATrACHMENT A TO SECTION 0190U REVISIONS TO THE STANDARD PLANS AND SPECIFICATIONS Water mains shall be laid to provide a minimwn cover over ihe oipe ot 36 i iches under iinished g�ade, unless indicated otherwise on ihe drawings or approved by the Re��dent Engineer. Laying of Pipe un Curves Section 7-09.3(15) is supplemented with the following: The maximum deflection of "Mechanical-Joint" pipr• and "�ush-on Joint" pipe shall not exceed that called out in Section 5.8.4 of the Ciry of Eve�ett Design and ConslrucHon Standards and Specifications. Expansion Joint Expansion joint shall be Redflex NSF grade Type J-1 Triple Arch Expansion Joint C/W control rods or approved equivalent. Connections to Existing Mains Section 7-09.3(19)A is suppiemented with the following: Orily City of Everett personnel shall make ihe physical connections between riew and existing mains. Connection to the existing main shall not be allowed until after the new main has been installed, hydrostatically tested, disinfected, flushed and authorized by the Resident Engineer. Tappiny sleeves shall con(orm to the requirements of Section 9-30.3(8) o( these Sp��cial Provisions. Prior to ordering tapping sleeves, the Coniractor shail meet with and discuss ihe order with ihe Resident Engineer and City of Everett water department representatives. Unless ott�erwise specified, the Contractor shall perform alI the excavations and shuring required to allow the City personnel to make the (inal connection between the existing and new mains. The new mains shall be aligned with the existing mains so the connection can be made in a straightiorward manner without turiher alignment changes. Any adjustments required will be made by the Contractor. The Contractor will supply all other materials and labor required tor the tinal connection, including bul not limited to valves, spools, tlanges, back(ill, compaction and restoration. Couplings shall be ductile iron, sleeve couplings, MJ x MJ as manufactured by Mueller or M& H, or approved equal. The Contractor shall give ihe Ci�y of Everett at least 48 hours notice for each connection. The City personnel shall not enter any excavation not shored in coniormance with the requirements of WISHA, RCW 49.17 including WAC 296-155. Concrete Thrust Blocking Section 7•09.3(21) is supplemented with ihe following: The Contractor shall supply and install concrete blocki , at all bends, tees, and crosses, includinc� (i?tinc�s installed by the City o( Everett. Concrete blocking may also be used at other locations as designated by the Resident Engineer tc support or protect the pipe or titlings. Concrete blocking (lhrust blocks) shall be cast-in-place and have a minimum ot �/a square foot bearing against the (itting and 2 square feel of bearing against undisturbed soil and shall be clear of joints so as to permit taking up or dismantling joint. All poured in place blocking shall have a minimum measurement of 12 inches between lhe pipe and the undisturbed bank. All blocking configurations and sizes shall be per City ot Everett Standard Drawinc�s 505 3nd 506. All blocking as shown on ihe standards are considered as minimum, and consideration should be given unusual circums�ances and topography. All concrete blocking shall be formed and all concrete shall be commercial concrate. Blocking shall be placed belween solid ground and ihe fitting to be anchored; the area bearing on the Capital Projects Commuter Rail Atlachment A to S@ction 01900 - 21 IFB No. RTA/CP 21-06 � Everett Stat��n Phase 2RFVISIONS TO THE STANDARD'�'LANS AND SPECIFICATIONSAddendum No.4