SECTION 03415

PRECAST CONCRETE HOLLOW CORE PLANKS

PART	GENERAL

SECTION INCLUDES

[Floor] [and] [roof] planks.

Connection plates [brackets] [and] [hangers].

Grouting plank joint keys.

PRODUCTS FURNISHED BUT NOT INSTALLED UNDER THIS SECTION

Section [______-____________]: Placement of [bearing pads,] [anchorage,] [and] [connection] devices.

PRODUCTS INSTALLED BUT NOT FURNISHED UNDER THIS SECTION

Section [______-____________]: Anchorage devices for [ceiling suspension.] [________.]

Section [______-____________]: Anchorage devices for [mechanical and electrical equipment hangers.] [________.]

RELATED SECTIONS

Section 03300 - Cast-in-Place Concrete: Concrete [superstructure building frame,] [topping,] [and] [reinforcement].

Section 03411 - Structural Precast Concrete.

Section 03451 - Architectural Precast Concrete.

Section 03470 - Tilt-up Precast Concrete.

Section 03505 - Self-Leveling Underlayment.

Section 03521 - Insulating Concrete Fill.

Section [______-____________]: Masonry load bearing support walls.

Section 05120 - Structural Steel: Supporting steel [lintels,] headers,] [________].

****** [OR] ******

Section 05500 - Metal Fabrications: Supporting steel [lintels,] headers,] [________].

Section 07270 - Firestopping.

Section 07900 - Joint Sealers: Caulking of butt joints of precast units at [exposed underside of floor members.] [________.]

Section [______-____________]: Interior applied finish.

REFERENCES

ACI 301 - Structural Concrete for Buildings.

ACI 318 - Building Code Requirements for Reinforced Concrete.

ASTM A36 - Structural Steel.

ASTM A153 - Zinc Coating (Hot-Dip) on Iron and Steel Hardware.

ASTM A416 - Uncoated Seven-Wire Stress-Relieved Steel Strand for Prestressed Concrete.

ASTM A615 - Deformed and Plain Billet-Steel Bars for Concrete Reinforcement.

ASTM A666 - Austenitic Stainless Steel, Sheet, Strip, Plate, and Flat Bar for Structural Applications.

ASTM C150 - Portland Cement.

AWS D1.1 - Structural Welding Code.

AWS D1.4 - Structural Welding Code - Reinforcing Steel.

PCI - Manual For The Design of Hollow Core Slabs.

PCI MNL-116 - Manual for Quality Control for Plants and Production of Precast and Prestressed Concrete Products.

PCI MNL-120 - Design Handbook - Precast and Prestressed Concrete.

PCI MNL-123 - Manual on Design of Connections for Precast Prestressed Concrete.

PCI MNL-124 - PCI Design for Fire Resistance of Precast Prestressed Concrete.

PCI - Design Handbook - Precast and Prestressed Concrete.

PCI - Tolerances for Precast and Prestressed Concrete.

UL - Underwriters' Laboratories Inc., Fire Resistance Directory.

DESIGN REQUIREMENTS

Size components to withstand design loads in a [restrained] [unrestrained] condition as follows:

Roof Assembly: [____] psf ([____] KPa) live [and dead] loads.

Floor Assembly: [____] psf ([____] KPa) live [and dead] loads.

Maximum Allowable Deflection of Roof Planks: [1/180] [1/240] [____] span, [cambered to achieve slope to drain.] [________.]

Maximum Allowable Deflection of Floor Planks: [1/240] [1/360] [____] span, [cambered to achieve flat surface under dead load.] [________.]

Design components to accommodate construction tolerances, deflection of other building structural members and clearances of intended openings.

Grouted Keys: Capable of transmitting horizontal shear force of [2,000] [____] lb/ft ([3,000] [____] kg/m).

Calculate structural properties of framing members in accordance with [ACI 301.] [ACI 318.] [________.]

Utilize the [PCI - Manual For The Design of Hollow Core Slabs] [and] [PCI - Design Handbook].

SUBMITTALS

Submit under provisions of Section [01300.] [________.]

Shop Drawings: Indicate plank locations, [unit identification marks,] connection details, edge conditions, bearing requirements, support conditions, dimensions, openings, [openings intended to be field cut,] and relationship to adjacent materials.

Product Data: Indicate standard component configuration, design loads, deflections, and cambers.

Samples: Submit [two] [_______], [____] inch ([____] mm) long samples of exposed to view surface finish.

Fabricator's Installation Instructions: Indicate special procedures, perimeter conditions requiring special attention, and [________].

QUALITY ASSURANCE

Perform Work in accordance with the requirements of PCI MNL-116, PCI MNL-123, and PCI MNL-120.

Maintain plant records and quality control program during production of precast planks. Make records available upon request.

Maintain [one copy] [[____] copies] of [each] document on site.

QUALIFICATIONS

Fabricator: Company specializing in manufacturing the work of this section with [three] [_______] years [documented] experience.

Erector: Company specializing in erecting the work of this Section [with [__________] years [documented] experience] [approved by fabricator].

Design precast concrete members [in accordance with PCI Manual For The Design of Hollow Core Slabs,] under direct supervision of a Professional Structural Engineer experienced in design of this work and licensed [at the place where the Project is located.] [in the State of [________].]

Welder: Qualified within previous [12] [____] months in accordance with AWS D1.1.

REGULATORY REQUIREMENTS

Conform to [ACI 318 and] [applicable] [________] code for design load and on-site construction requirements.

Conform to [UL Assembly No. [____],] [PCI MNL-124,] [________] to achieve [____] hour rating for roof assembly.

Conform to [UL Assembly No. [____],] [PCI MNL-124,] [________] to achieve [____] hour rating for floor assembly.

PRE-INSTALLATION CONFERENCE

Convene [one] [_____] week prior to commencing work of this section, under provisions of Section [01039.] [________.]

Discuss anchor and weld plate locations, sleeve locations, and cautions regarding cutting or core drilling.

DELIVERY, STORAGE, AND HANDLING

Deliver, store, protect and handle products to site under provisions of Section [01600.] [________.]

Lifting or Handling Devices: Capable of supporting member in positions anticipated during manufacture, storage, transportation, and erection.

Mark each member with date of production and final position in structure.

COORDINATION

Coordinate work under provisions of Section [01039.] [________.]

Coordinate the Work of framing components not post tensioned but directly associated with the Work of this section.

Coordinate field cut openings with affected section.

Coordinate location of hanger tabs and devices for mechanical and electrical work.

PART	PRODUCTS

FABRICATORS

[__________________________________] Product [_________].

[__________________________________] Product [_________].

[__________________________________] Product [_________].

Substitutions: Under provisions of Section [01600.] [________.]

MATERIALS

Materials: [ACI 318.] [________.]

Tensioning Steel Tendons: ASTM A416 Grade [250] [270] K, of sufficient strength commensurate with member design.

Reinforcing Steel: ASTM A615, deformed steel bars.

Non-shrink Grout: Non-metallic, minimum compressive strength of [10,000] [____] psi ([69] [____] MPa) at 28 days.

Cement Grout: Minimum compressive strength of [3,000] [____] psi ([21] [____] MPa) at 28 days.

ACCESSORIES

Connecting and Supporting Devices: [ASTM A36 carbon steel;] [ASTM A666 stainless steel;] [conforming to [PCI MNL-123] [________];] plates, angles, [items cast into concrete,] [items connected to steel framing members,] and inserts.

Core Hole End Plugs: [Cardboard insert with stiff concrete fill.] [Foamed-in-place insulation.] [Glass fiber insulation.] [________.]

Hanger Tabs: Galvanized steel, designed to fit into grouted key joints, capable of supporting [500] [____] lbs ([225] [____] Kg) dead load, predrilled to receive hanger.

Bearing Pads: [High density plastic, [1/8] [____] inch([3] [____] mm) thick, smooth on [one side.] [both sides.] [Vulcanized elastomeric compound molded to size.] [Neoprene (Chloroprene).] [Tetrafluoroethylene (TFE).] [________.]

Sill Seal: [Compressible glass fiber strips.] [________.]

FABRICATION

Conform to AWS D1.4. and [PCI MNL-116.] [________.]

Embed anchors, inserts, plates, angles, and other items at locations indicated.

Provide openings required by other sections, at locations indicated.

Cut exposed ends [flush.] [recessed for grout fill of stressing tendons.]

COMPONENTS

Nominal Thickness: [4] [6] [8] [10] [12] [15] [____] inches ([100] [150] [200] [250] [300] [380] [____] mm).

Nominal Plank Width: [12] [16] [20] [24] [40] [48] [96] [____] inches ([300] [400] [508] [600] [1 015] [1 200] [2 440] [____] mm).

FINISHES

Plant Finish: Finish members to PCI MNL-116 [Commercial] [Standard] [Finish B] [Finish A] Grade.

****** [OR] ******

Plant Finish: Exposed to view surfaces may contain small surface holes caused by small air bubbles, minor chipping or spalling at edges or ends, without major discoloration.

Connecting and Supporting Steel Devices: [Prime painted.] [Hot dip galvanized in accordance with ASTM A153.] [Electroplated.] [Unfinished.] [Do not paint surfaces in contact with concrete or surfaces requiring field welding.]

****** [OR] ******

Connecting and Supporting Stainless Steel Devices: [Mill] [Dull] [________] finish.

FABRICATION TOLERANCES

Conform to [PCI MNL-116.] [PCI - Tolerances for Precast and Prestressed Concrete.] [________.]

****** [OR] ******

Maximum Variation From Nominal Dimensions:

Width: [1/4] [____] inch ([6] [____] mm).

Length: [1/2] [____] inch ([12] [____] mm).

Thickness: [1/4] [____] inch ([6] [____] mm).

Maximum Variation From Intended Camber: [1/4] [____] inch in 10 feet ([6] [____] mm per 3 m).

Maximum Out of Square: [1/8] [____] inch/10 feet ([3] [____] mm/3 m), non-cumulative.

Maximum Misalignment of Anchors, Inserts, Openings: [1/8] [____] inch ([3] [____] mm).

Maximum Bowing of Members: Length of Bow/ [360.] [____.]

****** [OR] ******

Maximum Bowing of Members: [1/4] [____] inch in 10 feet to a maximum of [3/8] [____] inch.

SOURCE QUALITY CONTROL AND TESTS

Provide [testing] [and] [analysis] of site placed concrete and grout under provisions of Section [01400.] [________.]

Provide shop [inspection] [and] [testing] for stressing tendons.

Test samples in accordance with specified ASTM and ACI standards.

PART	EXECUTION

EXAMINATION

Verify site conditions under provisions of Section [01039.] [________.]

Verify that site conditions are ready to receive work and field measurements are as [indicated on [shop drawings.] [Drawings.] [instructed by the installer.]

Verify supporting structure is ready to receive work.

PREPARATION

Prepare support devices for the erection procedure and temporary bracing.

ERECTION

Erect members without damage to structural capacity, shape, or finish. Replace or repair damaged members.

Align and maintain uniform horizontal and end joints, as erection progresses.

Maintain temporary bracing in place until final connection is made. Protect members from staining.

Install bearing pads [and sill seal] at bearing ends of planks [as indicated].

Adjust differential camber between precast members to tolerance before final attachment [and grouting].

Adjust differential elevation between precast members to tolerance before final attachment.

[Install hanger tabs in joints at [____] inches ([____] mm) oc.]

Grout plank joints, trowel smooth.

[[Tape seal] [Place sealant backer rod to] underside of plank joints to prevent grout leakage.]

Transition differential elevation of adjoining planks with grout to a maximum slope of [1:12.] [____.]

Secure units in place. Perform welding in accordance with AWS D1.1.

ERECTION TOLERANCES

Erect members level and plumb within allowable tolerances. Conform to [PCI MNL-116.] [________.]

Erect to the following tolerances:

Maximum Variation from Plane or Location Indicated on Drawings: 1/4 inch in 10 feet and 3/8 inch in 100 feet (6 mm in 3 m and 9 mm in 30 mm), non-cumulative.

Maximum Offset from True Alignment Between Members: [1/4] [____] inch ([6] [____] mm).

Maximum Variation From Dimensions [Indicated on Reviewed [Shop Drawings] [Drawings]: Plus or minus [1/8] [____] inch ([3] [____] mm).

Exposed Joint Dimension: [3/8] [____] inch ([9] [____] mm) plus or minus 1/4 inch (6 mm).

PROTECTION OF FINISHED WORK

Protect finished Work under provisions of Section [01500.] [________.]

Protect members from damage caused by field welding or erection operations.

Provide non-combustible shields during welding operations.

CLEANING

Clean weld marks, dirt, or blemishes from surface of exposed members.

SCHEDULE

LOCATION	NOMINAL	NOMINAL	FINISH

DEPTH	WIDTH

Penthouse Roof	6 inches	18 inches	Standard

Main Roof	8 inches	24 inches	Finish A

Typical floor	10 inches	48 inches	Commercial

END OF SECTION