Combined Construction Inc. 7/22/2020

I1 the methods and equipment used for containment, collection, and disposal of all 2 debris. The Working Drawings shall show all stages of demolition. I 3 4 6-02.3(13).OPT7(C).GB6 5 (April 6, 2015) 6 Joint Preparation and Installation Procedure 7 The Contractor shall submit a Type 1 Working Drawing consisting of the sealant 8 manufacturer's recommended joint preparation and installation procedure. 9 I10 6-02.3(13).OPT7(E).FB6.DOCX 11 (April 6, 2015) 12 Removing Portions of Existing Bridge Expansion Joints I13 The Contractor shall remove all concrete, expansion joint materials, overlay, dirt 14 and debris at the bridge expansion joints of Bridge No(s). *** EVTB13 ***within 15 the blockout dimensions shown in the Plans. I 16 17 Concrete removal shall conform to Section 2-02.3(2)A2 and the following 18 restriction on power driven tools: I 19 20 1. Jack hammers no heavier than the nominal 30 pound class. 21 ' 22 23 2. Chipping hammers no heavier than the nominal 15 pound class. 24 No other power driven equipment shall be used to remove concrete in the vicinity 25 of the bridge expansion joints. The power driven tools shall be operated at 26 angles less than 45 degrees as measured from the surface of the deck to the 27 tool. 28 I 29 The Contractor shall dispose of all materials removed from the bridge expansion 30 joints in accordance with Section 2-02.3. 31 I 32 33 For polyester concrete headers, or elastomeric concrete headers,the Contractor shall clean and prepare all existing concrete surfaces bonding to the header in 34 accordance with the Polyester Concrete or Elastomeric Concrete subsection, I 35 respectively, to Section 6-02.3 as supplemented in these Special Provisions. 36 For concrete headers, the Contractor shall clean and prepare all existing 37 concrete surfaces bonding to the header in accordance with Section 6- 38 02.3(12)B. 39 40 6-02.3(13).OPT7(I).GB6 41 (April 6, 2015) I 42 Placing Expansion Joint Sealant 43 The Contractor shall have the services of a qualified sealant manufacturer's 44 technical representative physically present at the job site to assist in assuring I 45 the proper installation of the rapid cure silicone sealant, provide technical 46 assistance for the use of the joint sealant, train the Contractor's personnel 47 installing the joint sealant, and to observe and inspect the installation of at least I 48 the first complete joint. 49 50 The joint sealant shall not be placed against concrete until at least seven days I 51 after concrete placement. The joint sealant shall not be placed against polyester I MAPLE HEIGHTS BRIDGE SEISMIC RETROFIT PAGE 89 OF 106 SPECIAL PROVISIONS—Addendum 1 WORK ORDER#3693 MAY 4,2020 FEDERAL AID#BHM-2776(008)