Kamins Construction Inc Pacific Ave to Interurban Trail Bicycle Safety

1 1 shatter or crack at or above -5°F and shall not deform enough to expose the 2 metal at or below 200°F; or 3 4 3. Stainless steel that meet the requirements of ASTM A493, Type 302. Stainless 5 steel chair supports are not required to be galvanized or plastic coated. 6 7 In lieu of precast concrete supports, epoxy-coated reinforcing bars may be supported by 8 one of the following: 9 10 1. Metal supports coated entirely with a dielectric material such as epoxy or plastic, 11 12 2. Other epoxy-coated reinforcing bars, or 13 14 3. All-plastic supports. 15 16 Damaged coatings on metal bar supports shall be repaired prior to placing concrete. 17 18 All-plastic supports shall be lightweight, non-porous, and chemically inert in concrete. All- 19 plastic supports shall have rounded seatings, shall not deform under load during normal 20 temperatures, and shall not shatter or crack under impact loading in cold weather. All- 21 plastic supports shall be placed at spacings greater than 1 foot along the bar and shall 22 have at least 25 percent of their gross place area perforated to compensate for the 23 difference in the coefficient of thermal expansion between plastic and concrete.The shape 24 and configuration of all-plastic supports shall permit complete concrete consolidation in 25 and around the support. 26 27 A"mat" is two adjacent and perpendicular layers of reinforcing steel. In bridge decks, top 28 and bottom mats shall be supported adequately enough to hold both in their proper 29 positions. If bar supports directly support, or are directly supported on No. 4 bars, they 30 shall be spaced at not more than 3-foot intervals (or not more than 4-foot intervals for bars 31 No. 5 and larger). Wire ties to girder stirrups shall not be considered as supports. To 32 provide a rigid mat, the Contractor shall add other supports and tie wires to the top mat 33 as needed. 34 35 Unless noted otherwise, the minimum concrete cover for main reinforcing bars shall be: 36 37 3 inches to a concrete surface deposited against earth without intervening forms. 38 39 2% inches to the top surface of a concrete bridge deck or bridge approach slab. 40 41 2 inches to a concrete surface when not specified otherwise in this section or in the 42 Contract documents. 43 44 1% inches to a concrete barrier or curb surface. 45 46 Except for top cover in bridge decks and bridge approach slabs, minimum concrete cover 47 to ties and stirrups may be reduced by 1/2 inch but shall not be less than 1 inch. Minimum 48 concrete cover shall also be provided to the outermost part of mechanical splices and 49 headed steel reinforcing bars. 50 51 Reinforcing steel bar location, concrete cover and clearance shall not vary more than the 52 following tolerances from what is specified in the Contract documents: CITY OF EVERETT AMENDMENTS PACIFIC AVENUE TO INTERURBAN TRAIL BICYCLE SAFETY PROJECT 8/12/2019 STATE FUND#HLP PB17(014); COE#PW3688 Page AM-40