KLB Construction Inc 11/20/2018 - Laserfiche WebLink

1 7-05.4 Drop Manhole Connections 2 Section 7-05.3(4) is deleted and replaced with the following: I3 4 (City of Everett GSP) 5 Drop connections shall be constructed where shown on plans in accordance with these I6 Special Provisions and Sections 7-04, 7-05, and 7-17 of the Standard Specifications and 7 Standard Plan Nos. 612 and 613. 8 I 9 Holes for drop connections shall be factory installed for new manholes or core drilled for 10 existing manholes. Impact tools shall not be allowed for making holes in manhole walls. 11 I12 Unless otherwise directed by the Engineer, drop connections shall be constructed inside 13 manholes 54" in diameter and larger. Only outside drop connections may be used on 48" in 14 diameter manholes. 15 I 16 Section 7-05.3 is supplemented with the following: 17 18 (City of Everett GSP) I19 7-05.3(5) Furnish and Install Solid Lid for Catch Basins 20 New Section 7-05.3(5) 21 Where shown on the plans,the Contractor shall install new solid lids on existing catch basins. I22 The solid lids shall conform to Section 9-05.15 of the Standard Specifications and to Standard 23 Plan #406 &410 for Type A&B Catch Basins and Standard Plan 610 for Type 2 Catch Basins. 24 I25 7-05.3(6) Pressure Manhole 26 New section 7-05.3(6) 27 I28 (******) 29 The Pressure Manhole shall be furnished and installed as shown in the drawings. Care 30 should be taken to achieve the dimensions called for on the plans. The volume and I31 dimensions of the extended manhole base are a designed element and, as such, shall not 32 be changed without an approved Value Engineering Change Proposal according to section 33 1-04.4(2) of the standard specifications. 34 I35 Frame and Cover shall be a locked and Basketed type system rated for pressures up to 20 36 PSI. Extended manhole base may be shop fabricated or cast-in-place depending on field 37 conditions. 111 38 39 Pressure manhole shall include a standard catch basin base section with a sump to ensure 40 free operation, maintenance, and replacement of the flap gate. The manhole shall not be I41 channelized. 42 43 The flap gate shall be heavy duty and designed to withstand seating heads up to a minimum I44 of 50 feet. The frame shall be cast iron and machine drilled per ANSI Class 125 816.1 flange 45 pattern. The cover shall be one piece cast iron with an integrally cast lifting eye for manual 46 operation. Cast iron shall conform to ASTM A-126, Class B. Gate shall have stops or other I47 devices to prevent the cover from becoming stuck in the open position. All hinge pins and 48 assembly hardware shall be furnished in stainless steel. All cast iron parts shall be shop 49 coated for continuously submerged use. I 50 WEST MARINE VIEW DRIVE UTILITIES PAGE 94 OF 117 August 2018 WORK ORDER#3588 SPECIAL PROVISIONS