04221 CONCRETE UNIT MASONRY - Miami-Dade …

1 Project Name M-DCPS MASTER Jul. 2015 Project Number SPECIFICATION GUIDELINES 04221 1 04221 CONCRETE UNIT MASONRY ** SPECIFIER: This section covers reinforced block-work with reinforcing bars, joint reinforcement, and grouted cells, both exterior and interior, including fire rated construction. It specifies some MASONRY aspects of tie column and tie beam construction typical to south Florida that are not recognized in the ACI standards. It has provisions for adequately supporting wind-and-impact resisting windows, entrances and louvers.

2 It repeats the miscellaneous unreinforced MASONRY construction that is specified in the simpler 04222. You can edit this section to add block that has a textured or patterned face. This section does NOT specify brick, structural tile, glazed unit, cast stone or natural stone construction. On the Drawings it is important to distinguish unreinforced and reinforced block walls. CSI MasterFormat 2004 number: 04 22 10. ** PART 1 GENERAL RELATED REQUIREMENTS A. Coordinate CONCRETE unit MASONRY (also termed CMU and block ) work with work before and after, especially: 1.

3 Dovetail assemblies in CONCRETE , for anchoring MASONRY work 03100 2. CONCRETE framing. Div 03 3. Welding MASONRY anchors to steel structure. Div 05 4. Insulation beneath interior wall finish at exterior walls 07210 5. Wall vapor barrier (if used) Div 07 6. Anchoring devices for door frames, windows, entrances, louvers, curtain walls and other openings Div 08 OVERALL STANDARDS A. Perform reinforced CONCRETE MASONRY work in accordance with the latest edition of the following: 1. ACI 530 - Building Code Requirements for MASONRY and.

4 2. ACI - Specification for MASONRY Structures, except as more stringently specified herein. REFERENCES A. American Society for Testing and Materials (ASTM), latest edition. Specifications for: 1. A153 Zinc Coating (Hot Dip) for Iron and Steel Hardware. 2. A615 Deformed and Plain Billet-Steel Bars for CONCRETE Reinforcement. 3. A951 MASONRY Joint Reinforcement. 4. C33 CONCRETE Aggregates 5. C55 CONCRETE Brick. 6. C90 Loadbearing CONCRETE MASONRY Units. 7. C91 MASONRY Cement. Project Name M-DCPS MASTER Jul. 2015 Project Number SPECIFICATION GUIDELINES 04221 2 8.

5 C94 Ready-Mixed CONCRETE . 9. C144 Aggregate for MASONRY Mortar. 10. C150 Portland Cement. 11. C206 Finishing Hydrated Lime 12. C270 Mortar for Unit MASONRY . 13. C476 Grout for MASONRY . 14. C1019 Test Method for Sampling and Testing Grout. 15. C1142 Extended Life Mortar for Unit MASONRY . SUBMITTALS A. Shop Drawings: Window opening shop drawing, detailing special profiles in CONCRETE , MASONRY units, shapes or cast stone surrounds needed to accommodate and support the particular types of window and louvers that will be installed in this Work.

6 B. Product Data: Submit for fire-rated block, plain block, [textured block,] special shape, cast stone surround, horizontal joint reinforcement, and each metal accessory and plastic accessory with special attention to the weight of galvanizing on steel items. MOCKUP A. Sample Wall: Erect an 8 ft x 8 ft high x 8 in. (or full thickness if double wythe) sample wall on a 36 in. wide CONCRETE base, propped against overturning by wind, to serve as a standard of appearance and construction. 1. Sample wall shall contain a 3 x 3 ft opening with head, jamb and sill profiles and special surround shapes for window installation.

7 2. Remove sample wall and base only when permitted by A/E. PART 2 PRODUCTS ** SPECIFER: Select Normal or Medium weight. Check with structural engineer. Type I block (autoclaved, using electric energy) is not specified here because it normally has the moisture content of Type II by the time it is delivered to the worksite in normal humid south Florida weather. ** CONCRETE BLOCK AND BRICK (CMU) A. Description: Normal Weight (>125 lb/ft3)] [Medium Weight (105 to 125 lb/ft3)] loadbearing units including shapes as needed to execute details.

8 1. Texture: A uniform, medium texture that is neither very smooth nor very coarse. Face surfaces shall have a texture that will bond well to cementitious materials, yet not leave unpainted pits when painted by roller. 2. Linear shrinkage at time of delivery: maximum 3. Solid units: Where shown, provide solid units with <25% voids. 4. Shapes: Provide appropriate shapes to execute each condition shown. 5. Prohibited: Block of non-loadbearing grade; also U-block. 6. Fire rating of MASONRY units: As will attain UL fire rating shown for each wall.

9 B. Standards: Project Name M-DCPS MASTER Jul. 2015 Project Number SPECIFICATION GUIDELINES 04221 3 1. CONCRETE Block: ASTM C90, Type II. Do not use ASTM C129 units. 2. CONCRETE Brick: ASTM C55. ** SPECIFIER: If there are any decorative-face block in the Work, give a full description below. Name one or more producers products to ensure that you get what you want. Some common styles in addition to split-face are: ribbed, ribbed with split (specify number of ribs), vertically scored (specify number of square- or V-scores), horizontally scored, and ground face.

10 Keep in mind however, that graffiti are very hard to remove from decorative-face block. ** [SPLIT-FACE] [ _____ ] CONCRETE BLOCK A. Description: Loadbearing units of same weight class, linear shrinkage, and ASTM standard as other block. 1. Face description: _____ . 2. Color: _____. B. Product / Producer: 1. _____, by _____. 2. _____, by _____. 3. Equal product in quality and performance as approved after review by A/E and M-DCPS. CAST STONE A. Description: F c = 4000 lb/in2 units, with small coarse aggregate, white cement, and #2 galvanized steel rod reinforcing held 1-1/2 in.