A. Section Concrete Reinforcing: Reinforcing steel to be placed at the same time as formwork specified in this section.

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1 DIVISION 03 CONCRETE INSULATING CONCRETE FORMS PART 1 GENERAL 1.1 SECTION INCLUDES A. Insulating concrete forms: Modular unit formwork system for cast-in place concrete walls; formwork designed to remain in place after concrete work is complete. B. Shoring, bracing and anchorage. C. Openings for other work. D. Accessories. 1.2 RELATED REQUIREMENTS A. Section Concrete Reinforcing: Reinforcing steel to be placed at the same time as formwork specified in this section. B. Section Cast-in-Place Concrete: Concrete to be placed into formwork specified in this section. C. Section Masonry Veneer. D. Section Structural Steel: Placement of embedded steel anchors and plates in cast-in-place concrete. E. Section Metal Fabrications. F. Section Excavation: Shoring and underpinning for excavation. 1.3 REFERENCE STANDARDS A. ACI 301 -Specifications for Structural Concrete for Buildings; American Concrete Institute; B. ACI Building Code Requirements for Structural Concrete and Commentary; American Concre.te Institute; C. ACI 347 -Guide to Formwork for Concrete; American Concrete Institute; D. ASTM C1 77- Standard Test Method for Steady-State Heat Flux Measurements and Thermal Transmission Properties by Means of the Guarded-Hot-Plate Apparatus; E. ASTM C203 - Standard Test Methods for Breaking Load and Flexural Properties of Block-Type Thermal Insulation; 2005 (Revision A). F. ASTM C578 -Standard Specification for Rigid, Cellular Polystyrene Thermal Insulation; 201 Oa. G. ASTM D635 -Standard Test Method for Rate of Burning and/or Extent and Time of Burning of Plastics in a Horizontal Position; H. ASTM D638- Standard Test Method for Tensile Properties of Plastics; APRIL 2, 2012

2 I. ASTM D1621 -Standard Test Method for Compressive Properties Of Rigid Cellular Plastics; J. ASTM D1622 -Standard Test Method for Apparent Density of Rigid Cellular Plastics; K. ASTM D Standard Test Method for Response of Rigid Cellular Plastics to Thermal and Humid Aging; L. ASTM D2842 -Standard Test Method for Water Absorption of Rigid Cellular Plastics; M. ASTM D2843 -Standard Test Method for Density of Smoke from the Burning or Decomposition of Plastics; N. ASTM D2863 -Standard Test Methods for Measuring the Minimum Oxygen Concentration to Support Candle-Like Combustion of Plastics (Oxygen Index); ASTM E84 - Standard Test Method for Surface Burning Characteristics of Building Materials; 201 Ob. P. ASTM E96/E96M -Standard Test Methods for Water Vapor Transmission of Materials; ADMINISTRATIVE REQUIREMENTS A. Preinstallation Meeting: Conduct a preinstallatibn meeting one week prior to the start of the work of this section; require attendance by all affected installers. B. Sequencing: Ensure that utility connections are achieved in an orderly and expeditious manner. 1.5 SUBMITTALS A. See Section Submittals, for submittal procedures. B. Product Data: Provide data form materials and installation requirements. C. Shop Drawings: Indicate pertinent dimensions, materials, bracing, and arrangement of joints and ties. D. Welders' Certificates. 1.6 QUALITY ASSURANCE A. Welder Qualifications: Show certification of welders employed on the Work, verifying AWS qualification within the previous 1 2 months. 1.7 DELIVERY, STORAGE, AND HANDLING A. Deliver insulating concrete form system units and accessories with manufacturer's printed installation instructions and in manufacturer's original packaging. B. Protect insulating concrete form system units and accessories from exposure to sunlight APRIL 2, 2012

3 C. Store insulating concrete form system units off ground in ventilated and protected manner to prevent damage and deterioration from moisture. PART 2 PRODUCTS 2.1 MANUFACTURERS A. Arxx Prime ICF system:arxx Corporation: B. Quad-Lock building Systems LTD.: C. NuDURA Corporation: FORMWORK- GENERAL A. Provide insulating concrete forms, accessories, shoring, and bracing as required to accomplish insulated cast-in-place concrete work. B. Design and construct to provide resultant concrete that conforms to design with respect to shape, lines, and dimensions. C. Comply with applicable state and local codes with respect to design, fabrication and erection of formwork. D. Comply with relevant portions of ACI347, ACI 301, and ACI INSULATING CONCRETE FORMS A. Performance Requirements: 1. Thermal lnsulance (R-value) ofassembled System: Calculated thermal insulance when tested in accordance with ASTM C177. a. Wall System: 22 deg F hr sq ft, minimum. B. Insulating Concrete Form Units for Walls: Rigid, expanded polystyrene boards; boards connected horizontally with injection--molded polypropylene webs and vertically by means of interlocking edges. 1. Board Thickness: 2-1/2 inches. 2. Web Spacing: 6 inches on center, horizontally. 3. Web Configuration: 1/2 inch wide by 15 inches; integral supports for horizontal reinforcing steel; continuous end plates recessed 1/2 inch below surface of insulation on each face of unit to allow attachment of interior and exterior finishes without damage to insulation board. 4. Concrete Core Thickness: 4 inches ( mm) and 6 inches ( mm). 5. Unit Types: a. Reversible straight form. b. Reversible 90 degree corner. c. Reversible 45 degree corner. d. Brick ledge. e. End cap APRIL 2, 2012

4 2.4 COMPONENTS A. Expanded Polystyrene Insulation, General: Comply with the minimu'm requirements of ASTM C578, Type II and the specified characteristics below. 1. Density: 1.5 pounds per cubic foot when tested in accordance with ASTM D Compressive Strength: pounds per square inch when tested in accordance with ASTM D Flexural Strength: 42.6 pounds per square inch when tested in accordance with ASTM C Water Absorption: 2.95 percent by volume when tested in accordance with ASTM D Dimensional Stability: 0.52 percent when tested in accordance with ASTM D Limiting Oxygen Index: 37 percent when tested in accordance with ASTM D Flammability; when tested according to ASTM E84: a. Flame Spread: 25 or less. b. Smoke Developed: 450 or less. B. Injection Molded Polypropylene Ties and Profiles: 1. Tensile Strength: pounds when tested in accordance with ASTM D Ignition Temperature: 400 degrees F. 3. Burn Rate: 0.80 inch per minute when tested in accordance with ASTM D Smoke Density: 25.9 percent maximum when tested in accordance with ASTM D2843. C. Accessories: Provide the manufacturer's standard items listed below. 1. Internal bracing and alignment. 2. Door and window block outs. 3. Sleeves for wall penetrations MATERIALS A. Concrete, for Use with insulating Concrete Forms: Comply with the applicable requirements of Section and specific requirements listed below. 1. Aggregate: a. Normal weight. b. Size: 3/8 inch to 1/2 inch diameter. 2. Compressive Strength: 3000 pounds per square inch, minimum. 3. Water to Cement Ratio: 0.55 or less. 4. Slump: 5 inches to 6 inches. B. Reinforcing Steel: Size, material grade, placement and spacing as shown on the structural drawings. C. Cold Formed Metal Framing: Size, material grade, placement and spacing as shown on the structural drawings APRIL 2, 2012

5 PART 3 EXECUTION 3.1 EXAMINATION A. Verify lines, levels and centers before proceeding with insulating concrete form work. Ensure that dimensions agree with drawings. B. Verify placement of dowels and other anchors in foundations comply with the approved contract documents and the recommendations of the insulating concrete form manufacturer. 3.2 PREPARATION A. Clean tops of footings and other foundation elements before starting formwork. 3.3 ERECTION- FORMWORK A. Erect formwork, shoring and bracing as recommended by the manufacturer. Protect forms from damage. B. Erect formwork, shoring and bracing to achieve design requirements. Comply with applicable requirements of ACI 301. C. Brace forms as recommended by manufacturer to ensure stability. Shore or strengthen formwork subject to overstressing by construction loads. D. Align joints. Install units in running bond. E. Ensure webs and attachment strips are properly aligned. F. Install steel reinforcement as insulating concrete form work progresses and as shown on the structural engineering drawings. G. Install alignment system as recommended by manufacturer and as work progresses. 3.4 INSERTS, EMBEDDED PARTS, AND OPENINGS A. Remove insulating concrete form material and provide sleeves or other means to create formed openings where required. Cut forms for utility penetrations as needed. Coordinate location of openings for items to be embedded in or pass through concrete work. B. Locate and set in place items that will be cast directly into concrete. C. Install accessories in accordance with manufacturer's instructions, so they are straight, level, and plumb. Ensure items are not disturbed during concrete placement. 3.5 FORMWORK TOLERANCES A. Construct formwork to maintain tolerances required by ACI FIELD QUALITY CONTROL A. An independent testing agency will perform field quality control tests APRIL 2, 2012

6 B. Inspect insulating concrete form system, shoring, and bracing to ensure that work complies with the approved shop drawings and to verify that supports, fastenings, webs, alignment devices, attachment strips and other items are secure. 3.7 CLEANING A. Clean forms as installation progresses. Remove dirt, dust, debris, excess material, etc. within forms. B. Clean formed cavities and openings. C. Flush completed forms with compressed air or water. 1. If water is used, ensure that water and debris drain to exterior through cleanout ports and that formwork is free of standing water and dry before concreting begins. 2. During weather cold enough that water could be reasonably expected to freeze, do not use water to clean out forms unless form installation and concreting proceed within a heated enclosure. D. Remove snow and ice from within forms. Do not use de-icing salts or solutions. END OF SECTION APRIL 2, 2012

7 DIVISION 03 CONCRETE CONCRETE REINFORCING PART 1 GENERAL 1.1 SECTION INCLUDES A. Reinforcing steel for cast-in-place concrete. B. Supports and accessories for steel reinforcement. 1.2 SUBMITTALS A. See Section Submittals, for submittal procedures. B. Shop Drawings: Comply with requirements of ACI SP-66. Include bar schedules, shapes of bent bars, spacing of bars, and location of splices. 1.3 QUALITY ASSURANCE A. Perform work of this section in accordance with ACI 301. PART 2 PRODUCTS 2.1 REINFORCEMENT A. Reinforcing Steel: ASTM A61 5/A615M Grade 60 (420). 1. Plain billet-steel bars. 2. Unfinished. B. Steel Welded Wire Reinforcement: ASTM A185/A185M, plain type. 1. Flat Sheets. 2. Mesh Size and Wire Gage: As indicated on drawings. C. Reinforcement Accessories: 1. Tie Wire: Annealed, minimum 16 gage. 2. Chairs, Bolsters, Bar Supports, Spacers: Sized and shaped for adequate support of reinforcement during concrete placement. 2.2 FABRICATION A. Fabricate concrete reinforcing in accordance with CRSI (DA4)- Manual of Standard Practice. B. Welding of reinforcement is permitted only with the specific approval of Architect/Engineer. Perform welding in accordance with AWS D1.4. C. Locate reinforcing splices not indicated on drawings at point of minimum stress APRIL 2, 2012

8 PART 3 EXECUTION 3.1 PLACEMENT A. Place, support and secure reinforcement against displacement. Do not deviate from required position. B. Do not displace or damage vapor barrier. C. Accommodate placement of formed openings. D. Conform to ACI 318 code for concrete cover over reinforcement. 3.2 FIELD QUALITY CONTROL A. An independent testing agency will inspect installed reinforcement for conformance to contract documents before concrete placement. END OF SECTION APRIL 2, 2012

9 DIVISION 03 CONCRETE CAST-IN-PLACE CONCRETE PART 1 GENERAL 1.1 SECTION INCLUDES A. Floors and slabs on grade. B. Concrete foundation walls. C. Concrete foundations and anchors for solarium structure. D. Joint devices associated with concrete work. E. Miscellaneous concrete elements, including equipment pads. F. Concrete curing. 1.2 RELATED REQUIREMENTS ' ' ', ; '. i j ji ~ A. Section Insulating Concrete Forms B. Section Concrete Floor Finishing 1.3 SUBMITTALS I, ~ ' A. See Section Submittals, for submittal procedures. B. Product Data: Submit manufacturers' data on manufactured products showing compliance with specified requirements and installation instructions. C. Design Data: Submit concrete mix design for each concrete strength. Submit separate mix designs when admixtures are required for hot and cold weather concrete work, and air-entrained concrete work. 1.4 QUALITY ASSURANCE A. Perform work of this section in accordance with ACI 301 and ACI 318. B. Follow recommendations cif ACI 305Rwhen concreting during hot weather. C. Follow recommendations of ACI 306R when concreting during cold weather. PART 2 PRODUCTS 2.1 FORMWORK A. Comply with requirements of Section for insulating concrete forms. B. Formwork Design and Construction: Comply with guidelines of ACI 347 to provide formwork that will produce concrete complying with tolerances of ACI C. Form Materials: Contractor's choice of standard products with sufficient strength to withstand hydrostatic head without distortion in excess of permitted tolerances. 1. Form Coating: Release agent that will not adversely affect concrete or interfere with application of coatings APRIL 2, 2012

10 2.2 REINFORCEMENT A. Comply with requirements of Section CONCRETE MATERIALS A. Cement: ASTM C150, Type I- Normal Portland type. 1. Acquire all cement for entire project from same source. B. Fine and Coarse Aggregates: ASTM C Acquire all aggregates for entire project from same source. C. Fly Ash: ASTM C618, Class Cor F. D. Silica Fume: ASTM C1240, proportioned in accordance with ACI E. Water: Clean and not detrimental to concrete. F. Fiber Reinforcement: Synthetic fiber shown to have long-term resistance to deterioration when exposed to moisture and alkalis; 1/2 inch length. 2.4 CHEMICAL ADMIXTURES A. Do not use chemicals that will result in soluble chloride ions in excess of 0.1 percent by weight of cement. B. Air Entrainment Admixture: ASTM C260. C. Accelerating Admixture: ASTM C494/C494M Type C. D. Retarding Admixture: ASTM C494/C494M Type B. E Water Reducing Admixture: ASTM C494/C494M Type A ACCESSORY MATERIALS A. Underslab Vapor Retarder: Multi-layer, fabric-, cord-, grid-, or aluminum-reinforced polyethylene or equivalent, complying with ASTM E1745, Class A; stated by manufacturer as suitable for installation in contact with soil or granular fill under concrete slabs. The use of single ply polyethylene is prohibited. 1. Accessory Produ<:ts: Vapor retarder manufacturer's recommended tape, adhesive, mastic, prefabricated boots, etc., for sealing seams and penetrations in vapor retarder. B. Non-Shrink Cementitious Grout: ASTM C11 07 /C11 07M; premixed compound consisting of non-metallic aggregate, cement, water reducing and plasticizing agents. 1. Minimum Compressive Strength at 48 Hours: 2,400 psi. 2. Minimum Compressive Strength at 28 Days: 7,000 psi. 2.6 BONDING AND JOINTING PRODUCTS A. Epoxy Bonding System: Complying with ASTM C881/C881 M and of Type required for specific application. B. Waterstops: PVC, complying with COE CRD-C APRIL 2, 2012

11 C. Slab Isolation joint Filler: 1/2 inch thick, height equal to slab thickness, with removable top section that will form 1/2 inch deep sealant pocket after removal. 1. Material: ASTM D1751, cellulose fiber. D. Slab Construction Joint Devices: Combination keyed joint form and screed, galvanized steel, with minimum 1 inch diameter holes for conduit or rebars to pass through at 6 inches on center; ribbed steel stakes for setting. 2.7 CURING MATERIALS A. Evaporation Reducer: Liquid thin-film-forming compound that reduces rapid moisture loss caused by,high temperature, low humidity, and high winds; intended for application immediately after concrete placement. B. Curing Compound, Naturally Dissipating: Clear, water-based, liquid membraneforming compound, that dissipates within 3 to 5 weeks; complying with ASTM C309. C. Water: Potable, not detrimental to concrete. 2.8 CON,~RETE MIX DESIGN A. Proportioning Normal we'ight Concrete: Comply with ACI recommendations. 1. Replace as much Portli:md cement as possible with fly ash, ground granulated blast furnace slag, silica fume, or rice hull ash as is consistent with ACI recommendations. B. Admixtures: Add acceptable admixtures as recommended in ACI and at rates recommended by manufacturer. C. Fiber Reinforcement: Add to mix at rate of 1.5 pounds per cubic yard, or as recommended by manufacturer for specific project conditions. D. Normal Weight Concrete: 1. Compressive Strength, when tested in accordance with ASTM C39/C39M at 28 days: 4,00Q psi. 2. Fly Ash Content: Maximum 15 percent of cementitious materials by weight. 3. Silica Fume Content: Maximum 5 percent of cementitious materials by weight. 4. Water-Cement Ratio: Maximum 45 percent by weight. 5. Total Air Content: 5 percent, determined in accordance with ASTM C173/C173M. 6. Maximum Slump: 4 inches. 7. Maximum Aggregate Size: 3/4 inch. PART 3 EXECUTION 3.1 EXAMINATION A. Verify lines, levels, and dimensions before proceeding with work of this section APRIL 2, 2012

12 3.2 PREPARATION A. Formwork: Comply with requirements of ACI 301. Design and fabricate forms to support all applied loads until concrete is cured, and for easy removal without damage to concrete. B. Verify that forms are clean and free of rust before applying release agent. C. Coordinate placement of embedded items with erection of concrete formwork and placement of form accessories. D. Where new concrete is to be bonded to previously placed concrete, prepare existing surface by cleaning with steel brush and applying bonding agent in accordance with manufacturer's instructions. 1. Use epoxy bonding system for bonding to damp surfaces, for structural loadbearing applkations, and where curing under humid conditions is required. E. In locations where new concrete is doweled to existing work, drill holes in existing concrete, insert steel dowels ancl pack solid with non-shrink grout. F. Interior Slabs on Grade: Install vapor retarder under interior slabs on grade. Lap joints minimum 6 inches. Seal joints, seams and penetrations watertight with manufacturer's recommend~d products and follow manufacturer's written instructions. Repair damaged vapor retarderbefore covering. 1. Vapor Retarder Over Granular Fill: Install compactible granular fill before placing vapor retarder as shown on the drawings. Do not use sand. 3.3 PLACING CONCRETE ' A. Place concrete in accordance with ACI 304R. B. Place concrete for floor slabs in accordance with ACI R. C. Ensure reinforcement, inserts, waterstops, embedded parts, and formed construction joint devices will not be disturbed during concrete placement. D. Place concrete continuously without construction (cold) joints wherever possible; where construction joints are necessary, before next placement prepare joint surface by removing laitance and exposing the sand and sound surface mortar, by sandblasting or high-pressure water jetting. E. Finish floors level and flat, unless otherwise indicated, within the tolerances specified below. 3.4 SLABJOINTING A. Locate joints as indicated on the drawings. B. Anchor joint fillers and devices to prevent movement during concrete placement. C. Isolation Joints: Use preformed joint filler with removable top section for joint sealant, total height equal to thickness of slab, set flush with top of slab. D. Construction joints: Where not otherwise indicated, use metal combination screed and key form, with removable top section for joint sealant APRIL 2, 2012

13 3.5 FLOOR FLATNESS AND LEVELNESS TOLERANCES A. Maximum Variation of Surface Flatness: 1. Exposed Concrete Floors: 1/4 inch in 10 ft. 2. Under Seamless Resilient Flooring: 1/4 inch in 10ft. 3. Under Carpeting: 1/4 inch in 10ft. B. Correct the slab surface if tolerances are less than specified. C. Correct defects by grinding or by removal and replacement of the defective work. Areas requiring corrective work will be identified. Re-measure corrected areas by the same process. 3.7 CURING AND PROTECTION A. Comply with requirements of ACI 308R. Immediately after placement, protect concrete from premature drying, excessively hot or cold temperatures, and mechanical injury. B. Maintain concrete with minimal moisture loss at relatively constant temperature for period necessary for hydration of cement and hardening of concrete. C. Surfaces Not in Contact with Forms: 1. Initial Curing: Start as soon as free water has disappeared and before surface is dry. Keep continuously moist for not less than three days by water pending, water-saturated sand, water-fog spray, or saturated burlap. 2. Final Curing: Begin after initial curing but before surface is dry. 3.8 FIELD QUALITY CONTROL A. An independent testing agency will perform field quality control tests. B. Provide free access to concrete operations at project site and cooperate with appointed firm. C. Submit proposed mix design of each class of concrete to inspection and testing firm for review prior to commencement of concrete operations. D. Compressive Strength Tests: ASTM C39/C39M. For each test, mold and cure three concrete test cylinders. Obtain test samples for every 1 00 cu yd or less of each class of concrete placed. E. Take one additional test cylinder during cold weather concreting, cured on job site under same conditions as concrete it represents. 3.9 DEFECTIVE CONCRETE A. Defective Concrete: Concrete not conforming to required lines, details, dimensions, tolerances or specified requirements. B. Repair or replacement of defective concrete will be determined by the Architect/Engineer. The cost of additional testing shall be borne by Contractor when defective concrete is identified APRIL 2, 2012

14 3.10 PROTECTION A. Do not permit traffic over unprotected concrete floor surface until fully cured. END OF SECTION APRIL 2, 2012

15 DIVISION 03 CONCRETE CONCRETE FLOOR FINISHING PART 1 GENERAL 1.1 SECTION INCLUDES A. Finishing slabs on grade and monolithic floor slabs. B. Surface treatment with concrete hardener, sealer, and slip resistant coatings. 1.2 RELATED REQUIREMENTS A. Section Cast-in-Place Concrete: Prepared concrete floors ready to receive finish. B. Section Cast-in-Place Concrete: Control and formed expansion and contraction joints and joint devices. C. Section Joint Sealers. 1.3 REFERENCE STANDARDS A. ACI 301 -Specifications for Structural Concrete for Buildings; American Concrete Institute International; B. ACI R- Guide for Concrete Floor and Slab Construction; American Concrete Institute International; 2004 (Errata 2007). C. ASTM C1 36 -Standard Test Method for Sieve Analysis of Fine and Coarse Aggregates; D. ASTM E1155- Standard Test Method for Determining F(F) Floor Flatness and F(L) Floor Levelness Numbers; (Reapproved 2008). E. SSPC-Paint 36 -Two-Component Weatherable Aliphatic Polyurethane Topcoat, Performance-Based; ADMINISTRATIVE REQUIREMENTS A. Coordinate the work with concrete floor placement and concrete floor curing. 1.5 SUBMITTALS A. See Section Submittals, for submittal procedures. B. Product Data: Provide data on concrete hardener, sealer, and slip resistant treatment, including information on compatibility of different products and limitations. C. Maintenance Data: Provide data on maintenance renewal of applied coatings. 1.6 QUALITY ASSURANCE A. Perform Work in accordance with ACI Maintain one copy on project site APRIL 2, 2012

16 1.7 DELIVERY, STORAGE, AND HANDLING A. Deliver materials in manufacturer's sealed packaging, including application instructions. 1.8 FIELD CONDITIONS A. Maintain light level equivalent to minimum 200 W light source, placed 8 feet above the floor surface, for each 425 sq ft of floor being finished. B. Do not finish floors until interior heating system is operational. C. Maintain ambient temperature of 50 degrees F minimum. D. Provide ventilation sufficient to prevent injurious gases from temporary heat or other sources affecting concrete. PART 2 PRODUCTS 2.1 MANUFACTURERS A. Concrete Floor Finishes: 1. Dayton Superior Corporation: 2. L&M Construction Chemicals, Inc: 3. BASF Construction Chemicals-Building Systems: 4. HP Spartacote, Inc.: COMPOUNDS- HARDENERS AND SEALERS A. Floor Sealer: clear penetrating type. 1. Color(s): clear. 2. Product: PermaGuard manufactured by L&M Construction Chemicals, Inc. 2.3 SLIP RESISTANT TREATMENT A. Slip Resistant Finish: Aluminum oxide type. 1. Color(s): As selected by Architect/Engineer from manufacturer's standard range. 2. Product: GRIP IT manufactured by L&M Construction Chemicals, Inc. PART 3 EXECUTION 3.1 EXAMINATION A. Verify that floor surfaces are acceptable to receive the work of this section. 3.2 FLOOR FINISHING A. Finish concrete floor surfaces in accordance with ACI 301 and ACI R. B. Steel trowel surfaces that will receive carpeting or resilient flooring. C. Steel trowel surfaces that are scheduled to be exposed APRIL 2, 2012

17 D. In areas with floor drains, maintain design floor elevation at walls; slope surfaces uniformly to drains at 1/8 inch per foot nominal. 3.3 FLOOR SURFACE TREATMENT A. Apply hardener to scheduled floor surfaces in accordance with manufacturer's instructions. B. Apply slip resistant finish to scheduled floor surfaces in accordance with manufacturer's instructions. C. Apply sealer to scheduled floor surfaces in accordance with manufacturer's instructions. 3.4 TOLERANCES A. Measure flatness of slabs in accordance with ACI R. B. Finish concrete to achieve the following tolerances: 1. Maximum Variation of Surface Flatness Under Resilient Flooring: 1/4 inch in 10ft. C. Correct the slab surface if tolerances are less than specified. D. Correc;:t defects by grinding or by removal and replacement of the defective work. Areas requiring corrective work will be identified. Re-measure corrected areas by the same process. 3.5 SCHEDULES A. Mechanical Room 301: Clear penetrating sealer. B. Exterior Sidewalk: Slip-resistant aluminum oxide finish. END OF SECTION APRIL 2, 2012

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