Kamins Construction Inc Pacific Ave to Interurban Trail Bicycle Safety

loose and unsound concrete. Submit a modified repair procedure when Ii 2 required by the Engineer. 3 4 2. Square the edges of the repair area by cutting an edge perpendicular I 5 6 to the concrete surface around the repair area. The geometry of the repair perimeter shall minimize the edge length and shall be rectangular 7 with perpendicular edges, avoiding reentrant corners. The depth of the I 8 cut shall be a minimum of 3/4 inch, but shall be reduced if necessary to 9 avoid damaging any reinforcement. For repairs on vertical surfaces, the 10 top edge shall slope up toward the front at a 1-vertical-to-3-horizontal 112 11 slope. 13 3. Remove concrete within the repair area to a depth at least matching the 14 cut depth at the edges. Large variations in the depth of removal within I 15 short distances shall be avoided. Roughen the concrete surface. The 16 concrete surface should be roughened to at least Concrete Surface 17 Profile (CSP) 5 in accordance with ICRI Guideline No. 310.2R, unless Ii 8 a different CSP is recommended by the patching material manufacturer. 19 20 4. Inspect the concrete repair surface for delaminations, debonding, 21 microcracking and voids using hammer tapping or a chain drag. I22 Remove any additional loose or unsound concrete in accordance with 23 steps 1 through 3. 24 I 25 5. Select a patching material in accordance with Section 9-20.2 that is 26 appropriate for the repair location and thickness.The concrete patching 27 material shall be pumpable or self-consolidating as required for the type I 28 of placement that suits the repair. The patching material shall have a 29 minimum compressive strength at least equal to the specified 30 compressive strength of the concrete. I 31 32 6. Prepare the concrete surface and reinforcing steel in accordance with 33 the patching material manufacturer's recommendations.At a minimum, 34 clean the concrete surfaces (including perimeter edges) and reinforcing I 35 steel using oil-free abrasive blasting or high-pressure (minimum 5,000 36 psi) water blasting. All dirt; dust, loose particles, rust, laitance, oil, film. 37 microcracked/bruised concrete or foreign material of any sort shall be I 38 removed. Damage to the epoxy coating on steel reinforcing bars shall 39 be repaired in accordance with Section 6-O2.3(24)H. 40 I 41 7. Construct forms if necessary, such as for patching vertical or overhead 42 surfaces or where patching extends to the edge or corner of a 43 placement. 44 I 45 8. When recommended by the patching material manufacturer, saturate 46 the concrete in the repair area and remove any free water at the 47 concrete surface to obtain a saturated surface dry (SSD) substrate. I 48 When recommended by the patching material manufacturer, apply a 49 primer, scrub coat or bonding agent tO the existing surfaces. Epoxy 50 bonding agents, if used, shall be Type II or Type V in accordance with 51 Section 9-26.1. 52 ICITY OF EVERETT AMENDMENTS PACIFIC AVENUE TO INTERURBAN TRAIL BICYCLE SAFETY PROJECT 8/12/2019 STATE FUND#HLP PBI7(014); COE#PW3688 Page AM-33