VA 04 20 00-2012 UNIT MASONRY.pdf

1、05-01-12 04 20 00- 1 SECTION 04 20 00 UNIT MASONRY SPEC WRITER NOTE: 1. Delete between /_/ if not applicable to project. Also delete any other item or paragraph not applicable in the section and renumber the paragraphs. 2. Use this section for both reinforced and unreinforced masonry construction or

2、 where steel bar reinforcement is used in cells of hollow masonry units, bond beams, lintel units, and between wythes of unit masonry in engineered design which is similar to reinforced concrete construction. 3. Follow Specification for Masonry Structures (ACI 530.1/ASCE 6/TMS 602), Brick Industry A

3、ssociations “Technical Notes on Brick Construction“ and National Concrete Masonry Association “TEK Manual for Concrete Masonry Design and Construction”. PART 1 - GENERAL 1.1 DESCRIPTION This section specifies requirements for construction of masonry unit walls. 1.2 RELATED WORK A. Mortars / and grou

4、ts /: Section 04 05 13, MASONRY MORTARING, Section 04 05 16, MASONRY GROUTING. B. Steel lintels and shelf angles: Section 05 50 00, METAL FABRICATIONS. C. Cavity insulation: Section 07 21 13, THERMAL INSULATION. D. Flashing: Section 07 60 00, FLASHING AND SHEET METAL. E. Sealants and sealant install

5、ation: Section 07 92 00, JOINT SEALANTS. F. Color and texture of masonry units: Section 09 06 00, SCHEDULE FOR FINISHES. 1.3 SUBMITTALS A. Submit in accordance with Section 01 33 23, SHOP DRAWINGS, PRODUCT DATA AND SAMPLES. B. Samples: 1. Face brick, sample panel, 200 mm by 400 mm (8 inches by 16 in

6、ches,) showing full color range and texture of bricks, bond, and proposed mortar joints. 2. Concrete masonry units, when exposed in finish work. 3. Anchors, and ties, one each and joint reinforcing 1200 mm (48 inches) long. 4. Structural clay tile units. Provided by IHSNot for ResaleNo reproduction

7、or networking permitted without license from IHS-,-,-05-01-12 04 20 00- 2 5. Glazed structural clay facing tile, clipped panels (triplicate) of four wall units with base units, showing color range, each color and texture. C. Shop Drawings: 1. Special masonry shapes. 2. Drawings, showing reinforcemen

8、t, applicable dimensions and methods of hanging soffit or lintel masonry and reinforcing masonry for embedment of anchors for hung fixtures. 3. Ceramic glazed structural facing tile or concrete masonry units for typical window and door openings, and, for special conditions as affected by structural

9、conditions. /4. Pre-built masonry panels, calculations, and details of connections showing design and erection prior to construction. / /5. Shop Drawings: Submit shop drawings for fabrication, bending, and placement of reinforcing bars. Comply with ACI 315. Show bar schedules, diagrams of bent bars,

10、 stirrup spacing, lateral ties and other arrangements and assemblies as required for fabrication and placement of reinforcement for unit masonry work./ D. Certificates: 1. Certificates signed by manufacturer, including name and address of contractor, project location, and the quantity, and date or d

11、ates of shipment of delivery to which certificate applies. 2. Indicating that the following items meet specification requirements: a. Face brick. b. Solid and load-bearing concrete masonry units, including fire-resistant rated units. c. Ceramic glazed facing brick. d. Glazed structural clay facing t

12、ile. e. Structural clay tile units. 3. Testing laboratories facilities and qualifications of its principals and key personnel to perform tests specified. E. Laboratory Test Reports: 1. Brick for pre-built masonry panels. 2. Ceramic glazed facing brick. F. Manufacturers Literature and Data: 1. Anchor

13、s, ties, and reinforcement. 2. Shear keys. 3. Reinforcing bars. SPEC WRITER NOTE: For small projects verify use of following paragraph with the project manager. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-05-01-12 04 20 00- 3 1.4 SAMPLE PANEL A.

14、Before starting masonry, lay up a sample panel in accordance with Masonry Standards Joint Committee (MSJC) and Brick Industry Association (BIA). 1. Use masonry units from random cubes of units delivered on site. 2. Include reinforcing, ties, and anchors. B. Use sample panels approved by Resident Eng

15、ineer for standard of workmanship of new masonry work. C. Use sample panel to test cleaning methods. 1.5 WARRANTY Warrant exterior masonry walls against moisture leaks and subject to terms of “Warranty of Construction“, FAR clause 52.246-21, except that warranty period shall be five years. 1.6 APPLI

16、CABLE PUBLICATIONS A. Publications listed below form a part of this specification to the extent referenced. Publications are referenced in the text by the basic designation only. B. American Society for Testing and Materials (ASTM): A951-06 Steel Wire for Masonry Joint Reinforcement. A615/A615M-09 D

17、eformed and Plain Billet-Steel Bars for Concrete Reinforcement. A675/A675M-03(R2009) . Standard Specification for Steel Bars, Carbon, Hot-Wrought, Special Quality, Mechanical PropertiesC34-03 Structural Clay Load-Bearing Wall Tile C55-09 . Concrete Building Brick C56-10 . Structural Clay Non-Load-Be

18、aring Tile C62-10 . Building Brick (Solid Masonry Units Made From Clay or Shale) C67-09 . Sampling and Testing Brick and Structural Clay Tile C90-11 . Load-Bearing Concrete Masonry Units C126-10 Ceramic Glazed Structural Clay Facing Tile, Facing Brick, and Solid Masonry Units C216-10 Facing Brick (S

19、olid Masonry Units Made From Clay or Shale) C476-10 Standard Specification for Grout for Masonry C612-10 Mineral Fiber Block and Board Thermal Insulation C744-11 Prefaced Concrete and Calcium Silicate Masonry Units. Provided by IHSNot for ResaleNo reproduction or networking permitted without license

20、 from IHS-,-,-05-01-12 04 20 00- 4 D1056-07 . Flexible Cellular Materials - Sponge or Expanded Rubber D2000-08 . Rubber Products in Automotive Applications D2240-05(R2010) Rubber Property - Durometer Hardness D3574-08 . Flexible Cellular Materials-Slab, Bonded, and Molded Urethane Foams F1667-11 . F

21、asteners: Nails, Spikes and Staples C. Masonry Industry Council: Hot and Cold Weather Masonry Construction Manual-98 (R2000). D. American Welding Society (AWS): D1.4-11 Structural Welding Code Reinforcing Steel. E. Federal Specifications (FS): FF-S-107C-00 . Screws, Tapping and Drive F. Brick Indust

22、ry Association - Technical Notes on Brick Construction (BIA): 11-2001 Guide Specifications for Brick Masonry, Part I 11A1988 . Guide Specifications for Brick Masonry, Part II 11B1988 . Guide Specifications for Brick Masonry, Part III Execution 11C-1998 . Guide Specification for Brick Masonry Enginee

23、red Brick Masonry, Part IV 11D-1988 . Guide Specifications for Brick Masonry Engineered Brick Masonry, Part IV continued G. Masonry Standards Joint Committee; Specifications for Masonry Structures TMS 602-08/ACI 530.1-08/ASCE 6-08 (2008 MSJC Book Version TMS-0402-08). PART 2 - PRODUCTS SPEC WRITER N

24、OTE: 1. Make product requirements agree with applicable requirements specified in the referenced Applicable Publications. 2. Update and specify in both only which applies to the project. 3. Delete items not used in subsequent text. 4. See Brick Industry Association Tech Note 10B for definition of no

25、n-modular size and specify other, dimensions or detail in metric and English units. 5. Coordinate and specify in Section 09 06 00, SCHEDULE FOR FINISHES brick designations from at least two manufacturers. Obtain from Medical Center, name of manufacturer of brick on existing buildings. 2.1 BRICK A. F

26、ace Brick: Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-05-01-12 04 20 00- 5 1. ASTM C216, Grade SW, Type FBS. 2. Brick when tested in accordance with ASTM C67: Classified slightly efflorescent or better. 3. Size: a. Modular b. Thin Brick: 13 mm (

27、1/2 inch) thick with angle shapes for corners. B. Building Brick: ASTM C62, Grade MW for backup and interior work; Grade SW where in contact with earth. C. Ceramic Glazed Facing Brick: ASTM C126; Grade S, Type I (single-faced units) where only one face is exposed; Grade S, Type II (two-faced units)

28、where two opposite finished faces are exposed. 2.2 CONCRETE MASONRY UNITS A. Hollow and Solid Load-Bearing Concrete Masonry Units: ASTM C90. 1. Unit Weight: / Normal weight / medium weight / lightweight /. 2. Fire rated units for fire rated partitions. SPEC WRITER NOTE: 1. See National Concrete Maso

29、nry Association “TEK Series“ for shapes, names and functions. 2. Use of modular size is preferred. 3. Coordinate with Section 09 06 00, SCHEDULE FOR FINISHES to specify colored and special shapes. Detail customized masonry units. 3. Sizes: Modular. 4. For molded faces used as a finished surface, use

30、 concrete masonry units with uniform fine to medium surface texture unless specified otherwise. 5. Use bullnose concrete masonry units at corners exposed in finished work with 25 mm (one inch) minimum radius rounded vertical exterior corners (bullnose units). 6. Customized units: a. Sound-Absorbing

31、Units: 1) Vertical slots in face to core areas. 2) Acoustical absorption insert: Mineral fiber and metal septum, providing unit with NRC rating of 0.70. b. Split-face Units: 1) Split-Rib Units: Rib shapes as shown. 2) Ground Face Units: c. Glazed Face Units: Facing conform to ASTM C744. B. Concrete

32、Brick: ASTM C55. 2.3 CLAY TILE UNITS A. Glazed structural Facing Tile: Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-05-01-12 04 20 00- 6 1. ASTM C126, Grade S, / Type I (single faced units) / and Type II (two-faced units) /. SPEC WRITER NOTE: SEE

33、ASTM C126 to specify other sizes. 2. Size: 8W, thickness as shown. B. Structural Clay Load-Bearing Wall Tile: ASTM C34, Grade / LBX / LB /. C. Structural Clay Non-Load-Bearing Tile: ASTM C56, Grade NB. D. Use keyed surface structural clay tile units required to receive plaster or mortar. SPEC WRITER

34、 NOTE: Use shear keys for control joints in CMU walls. 2.4 SHEAR KEYS A. ASTM D2000, solid extruded cross-shaped section of rubber, neoprene, or polyvinyl chloride, with a durometer hardness of approximately 80 when tested in accordance with ASTM D2240, and a minimum shear strength of 3.5 MPa (500 p

35、si). B. Shear key dimensions: Approximately 70 mm by 8 mm for long flange and 38 mm by 16 mm for short flange (2-3/4 inches by 5/16 inch for long flange, and 1-1/2 inches by 5/8 inch for short flange). 2.5 ANCHORS, TIES, AND REINFORCEMENT A. Steel Reinforcing Bars: ASTM A615M, deformed bars, grade a

36、s shown. B. Joint Reinforcement: 1. Form from wire complying with ASTM A951. 2. Galvanized after fabrication. 3. Width of joint reinforcement 40 mm (0.16 inches) less than nominal width of masonry wall or partition. 4. Cross wires welded to longitudinal wires. 5. Joint reinforcement at least 3000 mm

37、 (10 feet) in length. 6. Joint reinforcement in rolls is not acceptable. 7. Joint reinforcement that is crimped to form drip is not acceptable. 8. Maximum spacing of cross wires 400 mm (16 inch) to longitudinal wires. 9. Ladder Design: a. Longitudinal wires deformed / 4 mm (0.16 inch) / 5 mm (0.20 i

38、nch) diameter wire. b. Cross wires / 2.6 mm (0.10 inch) / 4 mm (0.16 inch) diameter. 10. Trussed Design: a. Longitudinal and cross wires not less than 4 mm (0.16 inch nominal) diameter. b. Longitudinal wires deformed. 11. Multiple Wythes and Cavity wall ties: Provided by IHSNot for ResaleNo reproduc

39、tion or networking permitted without license from IHS-,-,-05-01-12 04 20 00- 7 a. Longitudinal wires 4 mm (0.16 inch), two in each wythe with ladder truss wires 4 mm (0.16 inch) overlay, welded to each longitudinal wire. b. Longitudinal wires 4 mm (0.16 inch) with U shape 4 mm (0.16 inch) rectangula

40、r ties extending into other wythe not less than 75 mm (3 inches) spaced 400 mm o.c. (16 inches). Adjustable type with U shape tie designed to receive 4 mm (0.16 inch) pintle projecting into other wythe 75 mm (3 inches min.). C. Adjustable Veneer Anchor for Frame Walls: 1. Two piece, adjustable ancho

41、r and tie. 2. Anchor and tie may be either type; use only one type throughout. 3. Loop Type: a. Anchor: Screw-on galvanized steel anchor strap 2.75 mm (0.11 inch) by 19 mm (3/4 inch) wide by 225 mm (9 inches) long, with 9 mm (0.35 inch) offset and 100 mm (4 inch) adjustment. Provide 5 mm (0.20 inch)

42、 hole at each end for fasteners. b. Ties: Triangular tie, fabricated of 5 mm (0.20 inch) diameter galvanized cold drawn steel wire. Ties long enough to engage the anchor and be embedded not less than 50 mm (2 inches) into the bed joint of the masonry veneer. 4. Angle Type: a. Anchor: Minimum 2 mm (1

43、6 gage) thick galvanized steel angle shaped anchor strap. Provide hole in vertical leg for fastener. Provide hole near end of outstanding leg to suit upstanding portion of tie. b. Tie: Fabricate from 5 mm (0.20 inch) diameter galvanized cold drawn steel wire. Form “L“ shape to be embedded not less t

44、han 50 mm (2 inches) into the bed joint of the masonry veneer and provide upstanding leg to fit through hole in anchor and be long enough to allow 50 mm (2 inches) of vertical adjustment. D. Dovetail Anchors: 1. Corrugated steel dovetail anchors formed of 1.5 mm (0.0598 inch) thick by 25 mm (1 inch)

45、 wide galvanized steel, 90 mm (3-1/2 inches) long where used to anchor 100 mm (4 inch) nominal thick masonry units, 140 mm (5-1/2 inches) long for masonry units more than 100 mm (4 inches) thick. 2. Triangular wire dovetail anchor 100 mm (4 inch) wide formed of 4 mm (9 gage) steel wire with galvaniz

46、ed steel dovetail insert. Anchor length to extend at least 75 mm (3 inches) into masonry, 25 mm (1 inch) into 40 mm (1-1/2 inch) thick units. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-05-01-12 04 20 00- 8 3. Form dovetail anchor slots from 0.6

47、mm (0.0239 inch) thick galvanized steel (with felt or fiber filler). E. Individual ties: 1. Rectangular ties: Form from 5 mm (3/16 inch) diameter galvanized steel rod to a rectangular shape not less than 50 mm (2 inches) wide by sufficient length for ends of ties to extend within 25 mm (1 inch) of e

48、ach face of wall. Ties that are crimped to form drip are not permitted. 2. Adjustable Cavity Wall Ties: a. Adjustable wall ties may be used at Contractors option. b. Two piece type permitting up to 40 mm (1-1/2 inch) adjustment. c. Form ties from 5 mm (3/16 inch) diameter galvanized steel wire. d. F

49、orm one piece to a rectangular shape 105 mm (4-1/8 inches) wide by length required to extend into the bed joint 50 mm (2 inches). e. Form the other piece to a 75 mm (3 inch) long by 75 mm (3 inch) wide shape, having a 75 mm (3 inch) long bent section for engaging the 105 mm (4-1/8 inch) wide piece to form adjustable connection. F. Wall Ties, (Mesh or Wire): 1. M