Ariston Pacific, Inc. 5/9/2016 - Laserfiche WebLink

I 1 The Contractor shall texture the bridge deck using diamond tipped saw blades I 2 3 mounted on a power driven, self-propelled machine that is designed to texture concrete surfaces. The grooving equipment shall provide grooves that are 1/8" ± 4 1/64"wide, 3/16" ± 1/16" deep, and spaced at 3/4" ± 1/8". The bridge deck shall 5 not be textured with a metal tined comb. I6 7 The Contractor shall submit the type of grooving equipment to be used to the 8 Engineer for approval 30 calendar days prior to performing the work. The I 9 Contractor shall demonstrate that the method and equipment for texturing the 10 bridge deck will not chip, spall or otherwise damage the deck. The Contractor shall 11 not begin texturing the bridge deck until receiving the Engineer's approval of the I 12 Contractor's method and equipment. 13 14 Unless otherwise approved by the Engineer, the Contractor shall texture the I 15 16 concrete bridge deck surface either in a longitudinal direction, parallel with centerline or in a transverse direction, perpendicular with centerline. The 17 Contractor shall texture the bridge deck surface to within 3-inches minimum and 18 15-inches maximum of the edge of concrete at expansion joints, within 1-foot 19 minimum and 2-feet maximum of the curb line, and within 3-inches minimum and 9- 20 inches maximum of the perimeter of bridge drain assemblies. 21 I22 The Contractor shall contain and collect all concrete dust and debris generated by 23 the bridge deck texturing process, and shall dispose of the collected concrete dust 24 and debris in accordance with Section 2-03.3(7)C. I 25 26 If the Plans call for placement of a sidewalk or an HMA or concrete overlay on the 27 bridge deck, the Contractor shall produce the final finish of these areas by dragging a I 28 29 strip of damp, seamless burlap lengthwise over the bridge deck or by brooming it lightly. Approximately 3-feet of the drag shall contact the surface, with the least possible bow in 30 its leading edge. It shall be kept wet and free of hardened lumps of concrete. When the I 31 32 burlap drag fails to produce the required finish, the Contractor shall replace it. When not in use, it shall be lifted clear of the bridge deck. 33 I 34 35 After the bridge deck has cured, the surface shall conform to the surface smoothness requirements specified in Section 6-02.3(10)D3. 36 37 The surface texture on any area repaired to address out-of-tolerance surface I38 smoothness shall match closely that of the surrounding bridge deck area at the 39 completion of the repair. Methods used to remove high spots shall cut through the 40 mortar and aggregate without breaking or dislodging the aggregate or causing spalls. I 41 42 6-02.3(10)D6 Bridge Approach Slab Finishing and Texturing 43 Bridge approach slabs that are being built as part of a bridge construction project shall I 44 45 be textured in accordance with Section 6-02.3(10)D5. All other bridge approach slabs shall be textured, using metal tined combs in the transverse direction, except bridge 46 approach slabs receiving an overlay in the same Contract shall be finished as specified I 47 48 in Section 6-02.3(10)D5 only. 49 The comb shall be made of a single row of metal tines. It shall leave striations in the 50 fresh concrete approximately 3/16-inch deep by 1/8-inch wide and spaced 51 approximately 1/2-inch apart. The Engineer will decide actual depths at the site. If the 52 comb has not been approved, the Contractor shall obtain the Engineer's approval by I I AMENDMENTS TO THE 2014 STANDARD SPECIFICATIONS BOOK Revised: 8/3/15