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<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-12 <br /> <br />1. Maintain concrete temperature below 90 deg F at time of placement. Chilled <br />mixing water or chopped ice may be used to control temperature, provided <br />water equivalent of ice is calculated to total amount of mixing water. Using <br />liquid nitrogen to cool concrete is Contractor's option. <br /> <br />2. Fog-spray forms, steel reinforcement, and subgrade just before placing <br />concrete. Keep subgrade uniformly moist without standing water, soft <br />spots, or dry areas. <br /> <br />3.4 FINISHING FORMED SURFACES <br /> <br />A. Defects in new concrete such as rock pockets and tie holes shall be repaired when <br />forms are removed. Grout used for repair shall contain a bonding admixture <br />conforming to ASTM C1059, Type II. Use admixture according to manufacturer's <br />written instructions. This shall be done for all surface finishes of formed concrete <br />surfaces. <br /> <br />1. Snap-off form ties shall be removed to a point 1" beneath surface of <br />concrete and resulting depression shall be carefully pointed with grout. <br /> <br />2. Removable form tie holes shall be plugged with X-Plug by Greenstreak, or <br />Engineer approved equal, and packed with grout. <br /> <br />B. Rough-Formed Finish: As-cast concrete texture imparted by form-facing material with <br />tie holes and defects repaired and patched. <br /> <br />1. Apply to concrete surfaces to be covered by earth fill. <br /> <br />C. Smooth-Formed Finish: As-cast concrete texture imparted by form-facing <br />material, arranged in an orderly and symmetrical manner with a minimum of <br />seams. Repair and patch tie holes and defects. Remove fins and other <br />projections that exceed specified limits on formed-surface irregularities. <br /> <br />1. Apply to exposed concrete surfaces and submerged surfaces. <br /> <br />D. Scrubbed Finish: Apply the following to smooth-formed finished as-cast concrete <br />surfaces indicated on plans: <br /> <br />1. Wet down the entire area and fill all air pockets, voids and other <br />depressions with grout to produce a smooth dense surface free from pits <br />and other irregularities. Thoroughly scrub into the wetted surface a mortar <br />mixture consisting of 1 part well graded sand passing the No. 30 sieve, 1- <br />part Portland cement and a sufficient quantity of a bonding admixture <br />(described previously) to produce a workable mixture. Scrubbing shall be <br />accomplished by use of a rubber or wood float following by finishing with a <br />cork float or a light brush. The resulting surface shall be true and uniform, <br />with no discernible thickness of mortar on the surface. <br /> <br />2. Finish shall extend a minimum of one foot below final grade. <br /> <br />E. Related Unformed Surfaces: At tops of walls, horizontal offsets, and similar <br />unformed surfaces adjacent to formed surfaces, strike off smooth and finish with <br />a texture matching adjacent formed surfaces. Continue final surface treatment of <br />formed surfaces uniformly across adjacent unformed surfaces unless otherwise