VA 03 45 00-2011 PRECAST ARCHITECTURAL CONCRETE.pdf

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1、09-11 03 45 00 - 1 SECTION 03 45 00 PRECAST ARCHITECTURAL CONCRETE SPEC WRITER NOTE: Delete between / _/ if not applicable to project. Also delete any other item or paragraph not applicable in the section and renumber the paragraphs. PART 1 - GENERAL 1.1 DESCRIPTION This section includes the perform

2、ance criteria, materials, production, and erection of architectural precast concrete cladding / and load bearing / units. The work performed under this section includes all labor, material, equipment, related services, and supervision required for the manufacture and erection of the architectural pr

3、ecast concrete work shown on the contract drawings. 1.2 RELATED WORK A. Materials testing and inspection during construction: Section 01 45 29, TESTING LABORATORY SERVICES. B. Concrete: Section 03 30 00, CAST-IN-PLACE CONCRETE. C. Precast pre-stressed structural building elements: Section 03 41 33,

4、PRECAST STRUCTURAL PRETENSIONED CONCRETE. D. Mortar: Section 04 05 13, MASONRY MORTARING/ Section 04 05 16, MASONRY GROUTING / E. Masonry Facing: Section 04 20 00, UNIT MASONRY. F. Cast Stone Facing: Section 04 72 00, CAST STONE MASONRY. G. Insulation for Insulated Panels: Section 07 21 13, THERMAL

5、INSULATION. H. Sealants and Caulking: Section 07 92 00, JOINT SEALANTS. I. Size, type and color of aggregate for exposed aggregate finish and matrix color: Section 09 06 00, SCHEDULE FOR FINISHES. J. Ceramic Tile Facing: Section 09 30 13, CERAMIC TILING. K. Repair of abraded galvanized and painted s

6、urfaces: Section 09 91 00, PAINTING. 1.3 QUALITY ASSURANCE A. Fabricator Qualifications: A firm that complies with PCI MNL 117 and the following requirements and is experienced in producing units similar to those indicated for this Project and with a record of successful in-service performance: 1. /

7、 Assumes responsibility for engineering units to comply with performance requirements. A Comprehensive Engineering Analysis shall be performed by a qualified professional engineer who is legally qualified Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,

8、-,-09-11 03 45 00 - 2 to practice in jurisdiction where Project is located and who is experienced in providing engineering services of the kind indicated. / 2. Participates in PCIs Plant Certification program at the time of bidding and is designated a PCI-certified plant for Group A, Category A1- Ar

9、chitectural Cladding and Load Bearing Units. 3. Has sufficient production capacity to produce required units without delaying the work. B. Erector Qualifications: 1. A precast concrete erector Qualified by the Precast/Prestressed Concrete Institute (PCI) prior to beginning work at the project site.

10、Submit a current Certificate of Compliance furnished by PCI designating qualification in / Category A (Architectural Systems) for non-load-bearing members / Category S2 (Complex Structural Systems) for load-bearing members /. 2. / An erector with a minimum of 2 years of experience who has completed

11、architectural precast concrete work similar in material, design, and extent to that indicated for this Project and whose work has resulted in construction with a record of successful in-service performance and who meets the following requirements: / a. / Retains a PCI Certified Field Auditor, at ere

12、ctors expense, to conduct a field audit of a project in the same category as this Project prior to start of erection. Submits Erectors Post Audit Declaration. / b. / The basis of the audit is the PCI MNL 127. / C. Quality-Control Standard: For manufacturing procedures and testing requirements, quali

13、ty-control recommendations, and dimensional tolerances for types of units required, comply with PCI MNL 117. D. Sample Panels: After sample approval and before fabricating units, produce a minimum of two sample panels approximately / 1.5 sq. m. (16 sq. ft.) / in size for review by Resident Engineer.

14、 Incorporate full scale details of architectural features, finishes, textures, and transitions in the sample panels. Approved sample panel may be used for mockup and range sample. 1. Locate panels where indicated or, if not indicated, as directed by Resident Engineer. 2. Damage part of an exposed-fa

15、ce surface for each finish, color, and texture, and demonstrate adequacy of repair techniques proposed for repair of surface blemishes. 3. After acceptance of repair technique, maintain one sample panel at the manufacturers plant and one at the project site in an undisturbed condition as a standard

16、for judging the completed work. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-09-11 03 45 00 - 3 4. When back face of precast concrete unit is to be exposed, show samples of the workmanship, color, and texture of the backup concrete as well as the

17、facing. 5. Demolish and remove sample panels only when directed. E. Range Samples: After sample panel approval and before production of units, produce a minimum of three samples, approximately / 1.5 sq. m. (16 sq. ft.) / in size, representing anticipated range of color and texture on projects units.

18、 Following range sample acceptance by the Resident Engineer, maintain samples at the manufacturers plant as color and texture acceptability reference. F. Mockups: After sample approval but before production of units, construct full sized mockups to verify selections made under sample Submittals and

19、to demonstrate aesthetic effects and qualities of materials and execution. Mockup to be representative of the finished work in all respects including glass, aluminum framing, sealants and architectural precast concrete complete with all anchors, connections, flashings, and joint fillers as accepted

20、on the final shop drawings. Build mockups to comply with the following requirements, using materials indicated for the completed work: 1. Build mockups in the location and of the size indicated or, if not indicated, as directed by Resident Engineer. 2. Notify Resident Engineer in advance of dates an

21、d times when mockups will be constructed. 3. Obtain Resident Engineers approval of mockups before starting fabrication. 4. Maintain mockups during construction in an undisturbed condition as a standard for judging the completed Work. 5. Demolish and remove mockups when directed. G. Preinstallation C

22、onference: Conduct conference at Project site to comply with requirements in Division 01, GENERAL REQUIREMENTS. 1.4 PERFORMANCE REQUIREMENTS A. Structural Performance: Provide units and connections capable of withstanding: the design criteria specified on the drawings, self weights and weights of ma

23、terials supported or attached, for the conditions indicated. 1. Design Standards: Comply with ACI 318 (ACI 318M) and the design recommendations of PCI MNL 120, applicable to types of units indicated. 2. Limit deflection of precast members as follows: Vertical live load Span / 360. Wind load Floor to

24、 floor height times 0.0025. 3. Design for handling, transportation and erection stresses. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-09-11 03 45 00 - 4 4. / Parking Garage Vehicular Impact Loads: Design spandrel units acting as vehicular barrier

25、 for passenger cars to resist a single load of 26.7 kN (6,000 lbs) service load and 44.5 kN (10,000 lbs) ultimate load applied horizontally in any direction, with anchorages or attachments capable of transferring this load to the structure. For design of these units, assume the load to act at a heig

26、ht of 460 mm (18 inches) above the floor or ramp surface on an area not to exceed 0.09 sq. m. (1 sq. ft.). / B. Design framing system and connections to maintain clearances at openings, to allow for fabrication and construction tolerances, to accommodate live load deflection, shrinkage and creep of

27、primary building structure, and other building movements. C. Thermal Movements: Provide for in-plane thermal movements resulting from annual ambient temperature changes of / 27 deg C (80 deg F) / Insert temperature /. Use other values, greater or smaller, whenever justified by climatic conditions at

28、 the project site. D. Calculated Fire-Test-Response Characteristics: Where indicated, provide units whose fire resistance has been calculated according to PCI MNL 124, and is acceptable to authorities having jurisdiction. 1.5 SUBMITTALS A. Product Data: For each type of product indicated. Retain qua

29、lity control records and certificates of compliance for 5 years or period of warranty, whichever is greater. B. Design Mixes: For each concrete mix along with compressive strength and water-absorption tests. C. Shop (Erection) Drawings: Detail fabrication and installation of units. 1. Indicate membe

30、r locations with distinctive marks that match marks placed on the panels. Provide plans, elevations, dimensions, corner details, shapes, cross sections and relationships to adjacent materials. 2. Indicate aesthetic intent including joints, reveals, and extent and location of each surface finish. 3.

31、Indicate separate face and backup mix locations, and thicknesses. Indicate locations, extent and treatment of dry joints if two-stage casting is proposed. 4. Indicate welded connections by AWS standard symbols. Detail loose and cast-in hardware, and connections. 5. Indicate locations, tolerances and

32、 details of anchorage devices to be embedded in or attached to structure or other construction. 6. Indicate sequence of erection. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-09-11 03 45 00 - 5 7. / Indicate locations and details of facing materia

33、ls, anchors, and joint widths./ 8. / Design Modifications: / / If design modifications are necessary to meet the performance requirements and field conditions, submit design calculations and drawings. Do not adversely affect the appearance, durability or strength of units when modifying details or m

34、aterials and maintain the general design concept. / D. / Comprehensive Engineering Analysis: Provide calculations / signed and sealed / certified / by the qualified professional engineer responsible for the product design. Show governing panel types, connections, and types of reinforcement, includin

35、g special reinforcement. Indicate design criteria and loads. Indicate the location, type, magnitude and direction of all imposed loadings from the precast system to the building structural frame. / E. Samples: Design reference samples for initial verification of design intent, approximately / 300 by

36、 300 by 50 mm (12 by 12 by 2 inches) /, representative of finishes, color, and textures of exposed surfaces of units. F. / Samples for each facing unit required, showing the full range of color and texture expected. Supply sketch of each corner or special shape with dimensions. Supply sample showing

37、 color and texture of joint treatment. / G. Welding Certificates: Copies of certificates for welding procedure specifications (WPS) and personnel. H. Qualification Data for fabricator and professional engineer: List of completed projects with project names and addresses, names and addresses of Resid

38、ent Engineers and owners, and other information specified. I. Material Test Reports: From a qualified testing agency indicating and interpreting test results of the following for compliance with requirements indicated: 1. Concrete strengths and mix designs. J. Material Certificates: Signed by manufa

39、cturers certifying that each of the following items complies with requirements. 1. Concrete materials. 2. Reinforcing materials and prestressing tendons. 3. Admixtures. 4. Bearing pads. 5. Structural-steel shapes and hollow structural sections. 6. Insulation 7. Facing units. 8. Anchors. Provided by

40、IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-09-11 03 45 00 - 6 1.6 PRODUCT DELIVERY, STORAGE AND HANDLING A. Product handling requirements of PCI MNL 117 shall be followed at the plant and project site. B. Deliver all units to the project site in such quanti

41、ties and at such times to assure compliance with the agreed project schedule and proper setting sequence so as to limit unloading units temporarily on the ground. C. Lift and support units only at designated points shown on the Shop Drawings. D. Furnish loose connection hardware and anchorage items

42、to be embedded in or attached to other construction without delaying the Work. Provide setting diagrams, templates, instructions, and directions, as required, for installation. 1.7 WARRANTY A. Warranty of precast concrete work, including anchorage, joint treatment and related components to be free f

43、rom defects in materials and workmanship, including cracking and spalling. B. After erection, completed work will be weathertight, subject to terms of Article “Warranty of Construction” FAR clause 52.246-21, except warranty period is extended to five years. 1.8 APPLICABLE PUBLICATIONS A. Publication

44、s listed below form a part of specification to extent referenced. Publications are referenced in text by basic designation only. B. American Society for Testing and Materials (ASTM): A27/A27M-10 . Steel Castings, Carbon, for General Application A36/A36M-08 . Carbon Structural Steel A47/A47M-99(R2009

45、) Ferritic Malleable Iron Castings A82-07 Steel Wire, Plain, for Concrete Reinforcement A108-07 . Steel Bar, Carbon and Alloy, Cold-Finished A123/A123M-09 . Zinc (Hot-Dip Galvanized) Coatings on Iron and Steel Products A153/A153M-09 . Zinc Coating (Hot-Dip) on Iron and Steel Hardware A167-99(R2009)

46、Stainless and Heat-Resisting Chromium-Nickel Steel Plate, Sheet, and Strip A184/A184M-06 . Fabricated Deformed Steel Bar Mats for Concrete Reinforcement A185-07 . Steel Welded Wire Fabric, Plain, for Concrete Reinforcement A276-10 . Stainless Steel Bars and Shapes A283/A283M-03(R2007) Low and Interm

47、ediate Tensile Strength Carbon Steel Plates Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-09-11 03 45 00 - 7 A307-10 . Carbon Steel Bolts and Studs, 60 000 PSI Tensile Strength A325/A325M-10 . Structural Bolts, Steel, Heat Treated, 120/105 ksi Mini

48、mum Tensile Strength A416/A416M-10 . Steel strand, Uncoated Seven-Wire for Prestressed Concrete A490/A490M-10 . Structural Bolts, Alloy Steel, Heat Treated, 150 ksi Minimum Tensile Strength A496-07 . Steel Wire, Deformed, for Concrete Reinforcement A497-07 . Steel Welded Wire Reinforcement, Deformed

49、, for Concrete A500-10 . Cold-Formed Welded and Seamless Carbon Steel Structural Tubing in Rounds and Shapes A563/A563M-07 . Carbon and Alloy Steel Nuts A572/A572M-07 . High-Strength Low-Alloy Columbium-Vanadium Structural Steel A615/A615M-09 . Deformed and Plain Billet-Steel Bars for Concrete Reinforcement A666-10 . Annealed or Cold-Worked Austenitic Stainless Steel Sh