Laserfiche WebLink
<br />THE CITY OF SUNNY ISLES BEACH <br />PROJECT NO. 21-1011 <br />BUILDING DEPARTMENT RELOCATION TO ANNEX <br /> <br />Project No. 21-1011 November 2024 033000 Cast-in-Place Concrete-14 <br /> <br />concrete filling indicated or required to complete the Work. <br /> <br />B. Equipment Bases and Foundations: Provide machine and equipment bases and <br />foundations as shown on Drawings. Set anchor bolts for machines and equipment <br />at correct elevations, complying with diagrams or templates from manufacturer <br />furnishing machines and equipment. <br /> <br />3.7 CONCRETE SURFACE REPAIRS <br /> <br />A. Defective Concrete: Repair and patch defective areas when directed by <br />Engineer. Remove and replace concrete that cannot be repaired and patched to <br />Engineer's approval. <br /> <br />B. Patching Mortar: Mix dry-pack patching mortar, consisting of one-part Portland <br />cement to two and one-half parts fine aggregate passing a No. 16 sieve, using <br />only enough water and/or bonding agent for handling and placing. <br /> <br />C. Repairing Formed Surfaces: Surface defects include color and texture <br />irregularities, cracks, spalls, air bubbles, honeycombs, rock pockets, fins and <br />other projections on the surface, and stains and other discolorations that cannot <br />be removed by cleaning. <br /> <br />1. Immediately after form removal, cut out honeycombs, rock pockets, and <br />voids more than 1/2 inch in any dimension to solid concrete. Limit cut <br />depth to 3/4 inch. Make edges of cuts perpendicular to concrete surface. <br />Clean, dampen with water, and brush-coat holes and voids with bonding <br />agent. Fill and compact with patching mortar before bonding agent has <br />dried. Fill form-tie voids with patching mortar or cone plugs secured in <br />place with bonding agent. <br /> <br />2. Repair defects on surfaces exposed to view by blending white Portland <br />cement and standard Portland cement so that, when dry, patching mortar <br />will match surrounding color. Patch a test area at inconspicuous locations <br />to verify mixture and color match before proceeding with patching. <br />Compact mortar in place and strike off slightly higher than surrounding <br />surface. <br /> <br />3. Repair defects on concealed formed surfaces that affect concrete's <br />durability and structural performance as determined by Engineer. <br /> <br />D. Repairing Unformed Surfaces: Test unformed surfaces, such as floors and slabs, <br />for finish and verify surface tolerances specified for each surface. Correct low and <br />high areas. Test surfaces sloped to drain for trueness of slope and smoothness; <br />use a sloped template. <br /> <br />1. Repair finished surfaces containing defects. Surface defects include spalls, <br />popouts, honeycombs, rock pockets, crazing and cracks in excess of 0.01 <br />inch wide or that penetrate to reinforcement or completely through <br />unreinforced sections regardless of width, and other objectionable <br />conditions. <br /> <br />2. After concrete has cured at least 14 days, correct high areas by grinding. <br /> <br />