.1 Formwork for cast-in-place concrete with shoring, bracing, and anchorage.

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1 CONCRETE FORMING AND ACCESSORIES Page 1 of 4 1 General 1.1 SECTION INCLUDES.1 Formwork for cast-in-place concrete with shoring, bracing, and anchorage..2 Form accessories..3 Form stripping. 1.2 RELATED SECTIONS.1 Section Concrete Reinforcement.2 Section Cast-in-Place Concrete.3 Section Concrete Curing 1.3 REFERENCES.1 American Concrete Institute (ACI) ACI Guide to Formwork for Concrete. ACI Committee 347, technical committee document , 2004, 32 pp..2 ACI ACI Specifications for Structural Concrete. ACI Committee 301, technical committee document , 2005, 49 pp..3 ACI ACI Specification for Tolerances for Concrete Construction and Materials (ACI ) and Commentary. ACI Committee 117, technical committee document , 2010, 76 pp. 1.4 PRODUCTS INSTALLED BUT NOT SUPPLIED UNDER THIS SECTION.1 Embedded items including, but not limited to, inserts, sleeves, anchors, and anchor bolts as shown or specified to be embedded, per the equipment manufacturer s recommendations. 1.5 DESIGN REQUIREMENTS.1 Design, engineer, and construct the formwork, shoring, and bracing to comply with code requirements; the resultant concrete will conform to the required shape, line, and dimensions, as indicated on the Technical Drawings..2 The Contractor will be responsible for form design, form removal procedures and sequences, shoring and reshoring, and shore removals according to ACI , Section 2.

2 CONCRETE FORMING AND ACCESSORIES Page 2 of QUALITY ASSURANCE.1 Comply with ACI and ACI unless specifically noted otherwise. 2 Products 2.1 FORM MATERIALS.1 See Section Concrete Reinforcement..2 See Section Cast-in-Place Concrete..3 See Section Concrete Curing..4 Forms for Exposed Finish Concrete: Plywood, metal, metal-framed plywood (faced), or other acceptable panel-type materials to provide continuous, straight, smooth, exposed surfaces. Furnish in largest practicable sizes to the minimal number of form marks..1 Plywood: U.S. Product Standard PS-1 "B-B (Concrete Form) Plywood," Class I, Exterior Grade or better, mill-oiled and edge-sealed, with each piece bearing a legible inspection trademark..5 Forms for Unexposed Finish Concrete: Plywood, lumber, metal, or other acceptable material. Provide lumber dressed on at least two edges and one side for a tight fit. 2.2 FORMWORK ACCESSORIES.1 Form Release Agent: Colorless mineral oil that will not stain concrete, absorb moisture, or impair natural bonding or color characteristics of coating intended for use on concrete, including curing compound, sealer, or waterproofing..2 Corners: Chamfered strip type, ¾ by ¾ inches, and maximum possible lengths. 3 Execution 3.1 EXAMINATION.1 Verify lines, levels, and centers before proceeding with formwork. Ensure that dimensions agree with the Technical Drawings. 3.2 EARTH FORMS.1 Hand-trim sides and bottom of each form. Remove loose soil prior to placing concrete. Earth forms are subject to the Engineer s review.

3 CONCRETE FORMING AND ACCESSORIES Page 3 of ERECTION FORMWORK.1 Erect formwork, shoring, and bracing to achieve design requirements. Use selected materials to obtain required finishes..2 Construct formwork so concrete members and structures are of the correct size, shape, alignment, elevation, and position..3 Obtain review before framing openings in structural members that are not indicated on the Technical Drawings..4 Provide chamfer strips on external corners and on other edges as indicated..5 Retighten forms and bracing after concrete placement, if required..6 Set edge forms or bulkheads and intermediate screed pins or strips for slabs to obtain required elevations and contours in the finished slab surface. 3.4 FORM CLEANING.1 Clean forms as erection proceeds to remove foreign matter within the forms..2 Clean formed cavities of debris prior to placing concrete..3 Flush with water or use compressed air to remove foreign matter. Ensure that water and debris are removed..4 During cold weather, remove ice and snow from within the forms. Do not use deicing salts. Do not use water to clean out forms, unless formwork and concrete construction proceed within heated enclosed areas. 3.5 APPLICATION FORM RELEASE AGENT.1 Clean reused forms of concrete residue. Repair and patch as required to return forms to acceptable surface condition..2 Apply form-release agent on formwork prior to placement of reinforcing steel, anchoring devices, and embedded items..3 Do not apply form-release agent where concrete surfaces will receive special finishes that are affected by the release agent. Soak inside surfaces of untreated forms with clean water. Keep surfaces coated prior to placement of concrete. 3.6 JOINTS, INSERTS, EMBEDDED PARTS, AND OPENINGS.1 Provide formed openings where required for items to pass through concrete work..2 Locate and set in place items that will be cast directly into concrete.

4 CONCRETE FORMING AND ACCESSORIES Page 4 of 4.3 Coordinate with the Work described in other Sections in forming and placing openings, recesses, sleeves, bolts, anchors, other inserts, and components of other work..4 Install accessories straight, level, and plumb. Ensure that items are not disturbed during concrete placement. 3.7 FORMWORK TOLERANCES.1 Comply with ACI FORM REMOVAL.1 Fabricate form for easy removal without hammering or prying against concrete surfaces..2 Forms not supporting the weight of concrete such as sides of beams, walls, and columns, and similar parts may be removed after curing for 24 hours. Concrete will be of sufficient hardness to avoid damage by form removal operations..3 Loosen forms carefully. Do not wedge pry bars, hammers, or tools against finished concrete surfaces scheduled for exposure to view..4 Clean, oil, and store removed forms so that surfaces in contact with fresh concrete will not be damaged..5 Reshore under areas where slabs and beams are used to support shoring and formwork for construction of levels above. END OF SECTION

5 CONCRETE REINFORCEMENT Page 1 of 3 1 General 1.1 SECTION INCLUDES.1 Reinforcing steel bars, wire fabric, and accessories for cast-in-place concrete and precast concrete. 1.2 RELATED SECTIONS.1 Section Concrete Forming and Accessories.2 Section Cast-in-Place Concrete.3 Section Concrete Curing 1.3 REFERENCES.1 American Concrete Institute (ACI) Manual of Standard Practice for Detailing Reinforced Concrete Structures. ACI Committee 315, ACI Journal vol. 61; issue 9. September 1. pp ACI ACI SP-66(04) ACI Detailing Manual ACI Committee 315, technical committee document SP-66(04), 2004, 66 pp..3 ACI ACI Specifications for Structural Concrete. ACI Committee 301, technical committee document , 2005, 49 pp..4 ACI ACI Building Code Requirements for Structural Concrete. ACI Committee 318, technical committee document , 2008, 467 pp..5 ASTM International (ASTM) A185 Standard Specification for Deformed and Plain Carbon-Steel Bars for Concrete Reinforcement. DOI: /A0185_A0185M-07. ASTM International, West Conshohocken, PA..6 ASTM A615 Standard Specification for Deformed and Plain Carbon-Steel Bars for Concrete Reinforcement. DOI: /A0615_A0615M-09B. ASTM International, West Conshohocken, PA..7 Concrete Reinforcing Steel Institute (CRSI) Manual of Standard Practice, 28th Edition. CSRI, Schaumburg, IL. 144 pp. 1.4 SUBMITTALS.1 Submit original Shop Drawings prepared for fabrication, bending, and placement of concrete reinforcement. Comply with ACI 315 Manual of Standard Practice for Detailing Reinforced Concrete Structures, showing bar schedules, stirrup spacing,

6 CONCRETE REINFORCEMENT Page 2 of 3 diagrams of bent bars, and arrangement of concrete reinforcement. Include special reinforcement required for openings through concrete structures. 1.5 QUALITY ASSURANCE.1 Comply with ACI and ACI Products 2.1 MATERIALS.1 See Section Concrete Forming and Accessories..2 See Section Cast-in-Place Concrete..3 See Section Concrete Curing. 2.2 REINFORCEMENT.1 Reinforcing Steel: ASTM A615, 60 thousand pounds per square inch yield grade, deformed billet steel bars, unfinished..2 Welded Wire Fabric: ASTM A185, plain wire. 2.3 ACCESSORIES.1 Chairs, Bolsters, Bar Supports, Spacers: Sized and shaped for strength and support of reinforcement during concrete placement conditions. 2.4 FABRICATION.1 Comply with CRSI Manual of Standard Practice and ACI SP-66. No welding of reinforcing bars will occur, unless authorized in writing by the Engineer. 3 Execution 3.1 PLACEMENT.1 Place, support, and secure reinforcement against displacement. Do not deviate from the required position. Comply with CRSI's recommended practice for placing reinforcing bars..2 Accommodate placement of formed openings. Provide additional reinforcement as required.

7 CONCRETE REINFORCEMENT Page 3 of 3.3 Unless noted otherwise, maintain the concrete cover for reinforcement as follows: Item Walls Footings and Concrete Formed Against Earth Slabs on Fill Coverage 2 inches 3 inches 3 inches.4 Do not field-cut reinforcement without the Engineer's permission..5 Do not bend reinforcement after embedment in hardened concrete..6 Clean reinforcement of loose rust, mill scale, ice, earth, and other material that affects the bond with concrete. END OF SECTION

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9 CAST-IN-PLACE CONCRETE Page 1 of 6 1 General 1.1 SECTION INCLUDES.1 Cast-in-place concrete..2 Non-shrink grout. 1.2 RELATED SECTIONS.1 Section Concrete Forming and Accessories.2 Section Concrete Reinforcement.3 Section Concrete Curing 1.3 REFERENCES.1 American Concrete Institute (ACI) ACI R-88 Cold Weather Concreting (Reapproved 2002). ACI Committee 306, technical committee document 306R-88, 1988, 23 pp..2 ACI ACI 305R-99 Hot Weather Concreting. ACI Committee 305, technical committee document 305R-99, 1999, 20 pp..3 ACI ACI Specifications for Structural Concrete. ACI Committee 301, technical committee document , 2005, 49 pp..4 ACI ACI 309.1R-08 Report on Behavior of Fresh Concrete During Vibration. ACI Committee 309, technical committee document 309.1R-08, 2008, 18 pp..5 ASTM International (ASTM) C881 Standard Specification for Epoxy- Resin-Base Bonding Systems for Concrete. DOI: /C0881_C0881M-02. ASTM International. West Conshohocken, PA..6 ASTM C260 Standard Specification for Air-Entraining Admixtures for Concrete. DOI: /C ASTM International. West Conshohocken, PA..7 ASTM C33 Standard Specification for Concrete Aggregates. DOI: /C0033_C0033M-08. ASTM International. West Conshohocken, PA..8 ASTM C618 Standard Specification for Coal Fly Ash and Raw or Calcined Natural Pozzolan for Use in Concrete. DOI: /C West Conshohocken, PA.

10 CAST-IN-PLACE CONCRETE Page 2 of 6.9 ASTM C150 Standard Specification for Portland Cement. DOI: /C0150_C0150M-09. ASTM International. West Conshohocken, PA..10 ASTM C494 Standard Specification for Chemical Admixtures for Concrete. DOI: /C0494_C0494M-10. ASTM International. West Conshohocken, PA. 1.4 QUALITY ASSURANCE.1 Comply with ACI unless specifically noted otherwise..2 Maintain one copy of ACI on site..3 Acquire cement and aggregate from the same source for all Work..4 Comply with ACI 305R-99 when concreting during hot weather..5 Comply with ACI 306R-88 when concreting during cold weather. 1.5 SUBMITTALS.1 Laboratory Test Reports: Submit laboratory test reports for concrete materials and mix design test. Tests must include historical 28-day strength breaks..2 Materials Certificates: Provide materials certificates signed by the manufacturer and the Contractor, certifying that each material item complies with or exceeds specified requirements in lieu of materials laboratory test reports, when permitted by the Engineer. 2 Products 2.1 CONCRETE MATERIALS.1 See Section Concrete Forming and Accessories..2 See Section Concrete Reinforcement..3 See Section Concrete Curing..4 Cement: ASTM C150, Type 1 Normal, Type II Moderate, Type III High Early Strength Portland type. Use one brand of cement throughout the Work, unless reviewed by the Engineer..5 Fine and Coarse Aggregates: ASTM C33 (normal weight aggregate); materials containing deleterious substances (spalling causing) are not acceptable..6 Water: Clean and not detrimental to concrete.

11 CAST-IN-PLACE CONCRETE Page 3 of ADMIXTURES.1 Not required but may be added. Chemical: ASTM C494 Type A Water- Reducing, Type B Retarding, Type C Accelerating, Type D Water-Reducing and Retarding, Type E Water-Reducing and Accelerating, Type F Water- Reducing, High Range, Type G Water-Reducing, High Range and Retarding; containing no chlorides; Master Builders, W.R. Grace, or as reviewed by the Engineer..2 Not required but may be added. Fly Ash: ASTM C618 Class F or C with loss on ignition of less than 3 percent. 2.3 CONCRETE MIX.1 Concrete Proportions: Comply with ACI 301, Class I Concrete: Provide concrete to the following criteria:.1 Compressive Strength (7-day): 3,600 pounds-force per square inch (psi).2 Compressive Strength (28-day): 4,500 psi.3 Water/Cement Ratio (maximum): 0.42 by weight.4 Fly Ash Content: Maximum 25 percent of cement content.5 Slump (maximum): 3 inches (due to water).3 Class II Concrete: Provide concrete to the following criteria:.1 Compressive Strength (28-day): 2,500 psi..2 Fly Ash Content: Maximum 25 percent of cement content.3 Slump (maximum): 6 inches 3 Execution 3.1 GENERAL.1 Use Class I concrete for structural concrete and for pavements, sidewalks, and equipment bases; use Class II concrete for fillets and fills, and where indicated..2 Cut contraction joints within 8 hours after placement of concrete. Cut ¼ depth of slab thickness. Refer to the Technical Drawings for joint requirements..3 Slope positively the floors containing sumps, gutters, or floor drains.

12 CAST-IN-PLACE CONCRETE Page 4 of PLACING CONCRETE.1 Comply with ACI 301 and the following procedures:.1 Deposit concrete continuously or in layers of such thickness that no concrete will be placed on concrete that has hardened sufficiently to cause the formation of seams or planes of weakness. If a section cannot be placed continuously, provide construction joints as herein specified. Deposit concrete as nearly as practicable to its final location to avoid segregation..2 Deposit concrete in forms in horizontal layers not deeper than 24 inches and in a manner to avoid inclined construction joints. Where placement consists of several layers, place each layer while the preceding layer is still plastic to avoid cold joints..3 Consolidate placed concrete using mechanical vibrating equipment supplemented by hand-spading, rodding, or tamping. Comply with ACI 309 for equipment and procedures for consolidation of concrete..4 Do not use vibrators to transport concrete inside forms. Insert and withdraw vibrators vertically at uniformly spaced locations not farther than the visible effectiveness of the machine. Place vibrators to rapidly penetrate the placed layer and at least 6 inches into the preceding layer. Do not insert vibrators into lower layers of concrete that have begun to set. At each insertion, limit the duration of vibration to the time necessary to consolidate concrete and complete embedment of reinforcement and other embedded items without causing segregation of mix..2 When Class I concrete arrives at the location of pour with a slump below 3 inches, water may be added only if neither the maximum permissible water-cement ratio nor the maximum slump is exceeded. Slump adjustment, with water, will be made only once..3 Placement of concrete under water is not permitted..4 Deposit and consolidate concrete slabs in a continuous operation, within the limits of the construction joints, until the panel or section is properly placed..1 Consolidate concrete during placing operations so that concrete is thoroughly worked around reinforcement and other embedded items and into corners..2 Bring slab surfaces to the correct level with a straight edge and strike off. Use bullfloats or darbies to smooth the surface, making it free of humps and hollows. Do not disturb slab surfaces prior to beginning the finishing operations..3 Maintain reinforcing in proper position during concrete placement operations

13 CAST-IN-PLACE CONCRETE Page 5 of 6.5 Cold Weather Placing: Comply with ACI 306R-88 and the following procedures to protect concrete work from physical damage or reduced strength, which could be caused by frost, freezing actions, or low temperatures:.1 When the air temperature has fallen to or is expected to fall below 40 degrees Fahrenheit ( F), uniformly heat water and aggregates before mixing to obtain a concrete mixture temperature of not less than 50 F and not more than 80 F at point of placement. Maintain concrete within this temperature range for not less than 7 days..2 Do not use frozen materials or materials containing ice or snow. Do not place concrete on frozen subgrade, on subgrade containing frozen materials, or against cold reinforcing steel..3 Do not use calcium chloride, salt, and other materials containing anti-freeze agents or chemical accelerators, unless otherwise accepted in mix designs..6 Hot Weather Placing: Comply with ACI 305R-99 and the following procedures when hot weather conditions exist that would seriously impair quality and strength of concrete:.1 Cool ingredients before mixing to maintain concrete temperature at the time of placement below 90 F. Mixing water may be chilled, or chopped ice may be used to control temperature provided that the water equivalent of ice is calculated to the total amount of mixing water. The Contractor may choose to use liquid nitrogen to cool concrete..2 Cover reinforcing steel with water-soaked burlap if it becomes too hot, so that the steel temperature will not exceed the ambient air temperature immediately before embedment in concrete..3 Fog spray forms, reinforcing steel, and subgrade just before concrete is placed..4 Use water-reducing retarding admixture (Type D) when required by high temperatures, low humidity, or other adverse placing conditions. 3.3 REPAIR OF DEFECTIVE AREAS.1 Preparation of defective areas must be reviewed by the Engineer prior to patching..2 Repair surface defects immediately after form removal..3 Remove honeycombed and other defective concrete down to sound concrete.

14 CAST-IN-PLACE CONCRETE Page 6 of CONCRETE FINISHING.1 Concrete Floor Surfaces: Follow Section Concrete Curing..2 Formed Concrete Surfaces: Smooth form finish as described in ACI 301, b and no form marks greater than 1 / 16 inch in relief, unless otherwise specified..3 Exposed Formed Surfaces of Slabs: Smooth form finish with all offsets and unevenness due to form arrangement, and ground smooth. 3.5 CURING AND PROTECTION.1 Immediately after placement, protect concrete from premature drying, excessively hot or cold temperatures, and mechanical injury..2 Concrete Surfaces: In accordance with Section Concrete Curing. 3.6 FIELD QUALITY CONTROL.1 Tests of cement and aggregates may be performed to ensure conformance with specified requirements..2 Field test concrete slump, air content, and strength in accordance with ACI Take samples for air content and strength as near as practical to the point of placement into the formwork or at a location that closely matches the handling conditions when the concrete is placed in the forms. Prior to the addition of a midor high-range water reducer, a slump test may be made from a sample taken from the very first concrete out of the load..3 The Contractor is responsible for additional testing expenses incurred for the purpose of making, transporting, or testing field-cured cylinders. END OF SECTION

15 CONCRETE CURING Page 1 of 3 1 General 1.1 SECTION INCLUDES.1 Initial and final curing of horizontal and vertical concrete surfaces. 1.2 RELATED SECTIONS.1 Section Concrete Forming and Accessories.2 Section Concrete Reinforcement.3 Section Cast-in Place Concrete 1.3 REFERENCES.1 American Concrete Institute (ACI) ACI 305R-99 Hot Weather Concreting. ACI Committee 305, technical committee document 305R-99, 1999, 20 pp..2 ACI ACI 302.1R-04 Guide for Concrete Floor and Slab Construction. ACI Committee 302, technical committee document 302.1R-04, 2004, 77 pp..3 ACI ACI Specifications for Structural Concrete. ACI Committee 301, technical committee document , 2005, 49 pp. 1.4 SUBMITTALS.1 Submit proposed method of curing to the Engineer for review if different than subsequently specified methods. 1.5 QUALITY ASSURANCE.1 Comply with ACI and ACI Products 2.1 MATERIALS.1 See Section Concrete Forming and Accessories..2 See Section Concrete Reinforcement..3 See Section Cast-in-Place Concrete..4 Membrane Curing Compound: C309, Type 1-D, Class B, clear with fugitive dye that disappears approximately 24 hours after exposure to sunlight; Spray-Cure Safe

16 CONCRETE CURING Page 2 of 3 Cure Clear, Euclid Chemical Company Kurez DR; or as reviewed by the Engineer. Curing compound will be compatible with coatings (including sealer, waterproofing, bonded cementitious topping, or floor tile), which will be applied to the concrete surface..5 Absorptive Mats: Burlap-polyethylene, minimum 8 ounces per square yard bonded to prevent separation during handling and placing..6 Water: Potable, not detrimental to concrete..7 Evaporation Retardant: Euclid Chemical Company Euco-Bar, or as reviewed by the Engineer. 3 Execution 3.1 HORIZONTAL SURFACES.1 Cure surfaces in accordance with ACI 301 using any of the following accepted procedures:.1 Spraying: Spray water over floor slab areas and keep wet for 7 days..2 Absorptive Mat: Saturate burlap-polyethylene and place burlap side down over floor slab areas, lapping ends and sides; maintain in place for 7 days..3 Membrane curing compound. 3.2 VERTICAL SURFACES.1 Cure surfaces using any of the following accepted procedures..1 Formwork: Keep forms in place for 7 days..2 Spraying: Spray water over surfaces and maintain wet for 7 days..3 Membrane curing compound. 3.3 PROTECTION OF WORK.1 Do not permit traffic over unprotected floor surface..2 When the mean daily outdoor temperature is less than 40 degrees Fahrenheit, the Contractor will, not less than 24 hours prior to placement, submit to the Engineer for review the arrangements for heating, covering, insulating, or housing the concrete work.

17 CONCRETE CURING Page 3 of 3.3 When the rate of evaporation of surface moisture from concrete, as estimated from Figure of ACI 305R-99, Recommended Practice for Hot Weather Concreting, exceeds 0.15 pound per square foot per hour, the measures of ACI 301, , will be put into practice. As a supplement to or in lieu of certain of these measures, an evaporation retardant will be used to help prevent rapid drying of fresh concrete and as a finishing aid. END OF SECTION

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