This Product MasterSpec Section modifies the original MasterSpec text, and does not include the full content of the original MasterSpec Section


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Copyright 2011 AIA MASTERSPEC Full Length 02/11

PRODUCT MASTERSPEC LICENSED BY ARCOM TO KEENE BUILDING PRODUCTS.


Copyright 2011 by The American Institute of Architects (AIA)

Exclusively published and distributed by Architectural Computer Services, Inc. (ARCOM) for the AIA

This Product MasterSpec Section is licensed by ARCOM to Keene Building Products ("Licensee").

This Product MasterSpec Section modifies the original MasterSpec text, and does not include the full content of the original MasterSpec Section.

Revisions made to the original MasterSpec text are made solely by the Licensee and are not endorsed by, or representative of the opinions of, ARCOM or The American Institute of Architects (AIA). Neither AIA nor ARCOM are liable in any way for such revisions or for the use of this Product MasterSpec Section by any end user. A qualified design professional should review and edit the document to suit project requirements.

For more information, contact Keene Building Products, P.O. Box 241353, Mayfield Heights, OH 44124; Phone: (877) 514-5336; Fax (440) 605 1120; Website: www.keenebuilding.com; Email: info@keenebuilding.com.

For information about MasterSpec contact ARCOM at (800) 424-5080 or visit www.MasterSpec.com.

SECTION 042000 - UNIT MASONRY

Revise this Section by deleting and inserting text to meet Project-specific requirements.

This Section uses the term "Architect." Change this term to match that used to identify the design professional as defined in the General and Supplementary Conditions.

Verify that Section titles referenced in this Section are correct for this Project's Specifications; Section titles may have changed.

PART 1 - GENERAL

1.1RELATED DOCUMENTS

Retain or delete this article in all Sections of Project Manual.

A.Drawings and general provisions of the Contract, including General and Supplementary Conditions and Division 01 Specification Sections, apply to this Section.

1.2SUMMARY

A.Section Includes:

1.Concrete masonry units.

2.Concrete building brick.

3.Decorative concrete masonry units.

4.Pre-faced concrete masonry units.

5.Concrete facing brick.

6.Face brick.

7.Building (common) brick.

8.Hollow brick.

9.Glazed brick.

10.Structural-clay facing tile.

11.Firebox brick.

12.Clay flue lining units.

13.Stone trim units.

14.Mortar and grout.

15.Steel reinforcing bars.

16.Masonry joint reinforcement.

17.Ties and anchors.

18.Embedded flashing.

19.Miscellaneous masonry accessories.

20.Masonry-cell insulation.

21.Cavity-wall insulation.

B.Related Sections:

Retain Sections in subparagraphs below that contain requirements Contractor might expect to find in this Section but are specified in other Sections.

Usually delete option in first subparagraph below and specify dovetail slots in concrete Section.

1.Section 033000 "Cast-in-Place Concrete" for [ installing] dovetail slots for masonry anchors.

2.Section 042300 "Glass Unit Masonry" for glass block.

3.Section 047200 "Cast Stone Masonry" for furnishing cast stone trim.

Delete first subparagraph below if installation of anchor sections is included in this Section.

4.Section 051200 "Structural Steel Framing" for installing anchor sections of adjustable masonry anchors for connecting to structural steel frame.

5.Section 055000 "Metal Fabrications" for furnishing steel [lintels] [and] [shelf angles] for unit masonry.

6.Section 071900 "Water Repellents" for water repellents applied to unit masonry.

Coordinate first subparagraph below with referenced Section. Metal through-wall flashing is included in Section 076200 "Sheet Metal Flashing and Trim" and in this Section.

7.Section 076200 "Sheet Metal Flashing and Trim" for [ exposed] sheet metal flashing and for furnishing manufactured reglets installed in masonry joints.

8.Section 089516 "Wall Vents" for wall vents (brick vents).

9.Section 096313 "Brick Flooring" for interior brick flooring.

10.Section 096313.35 "Chemical-Resistant Brick Flooring" for chemical-resistant, interior brick flooring.

11.Section 097523 "Stone Window Stools" for stone window stools.

12.Section 321400 "Unit Paving" for exterior unit masonry paving.

13.Section 323223 "Segmental Retaining Walls" for dry-laid, concrete unit retaining walls.

Revise paragraph below if allowances are required for other types of masonry units. Include separate allowances for special shapes if required.

C.Allowances: Face brick is included under Face Brick Allowances as specified in Section 012100 "Allowances."

1.3DEFINITIONS

Retain definition(s) remaining after this Section has been edited.

A.CMU(s): Concrete masonry unit(s).

B.Reinforced Masonry: Masonry containing reinforcing steel in grouted cells.

1.4PERFORMANCE REQUIREMENTS

Retain this article for masonry designed by analytical methods when specifying masonry compressive strength rather than specifying compressive strength of masonry units and mortar. Revise paragraph below and insert required compressive strength of masonry if not indicated on Drawings.

A.Provide[ structural] unit masonry that develops indicated net-area compressive strengths at 28 days.

Retain one of two subparagraphs below.

1.Determine net-area compressive strength of masonry from average net-area compressive strengths of masonry units and mortar types (unit-strength method) according to Tables 1 and 2 in ACI 530.1/ASCE 6/TMS 602.

2.Determine net-area compressive strength of masonry by testing masonry prisms according to ASTM C 1314.

1.5PRECONSTRUCTION TESTING

Testing prior to construction is required for masonry designed according to MSJC Code by either analytical method regardless of occupancy category. Note that for nonessential facilities authorities having jurisdiction may interpret this requirement to mean testing materials from the same lots or batches used for constructing Project rather than preconstruction tests, in which case field quality-control testing would be more appropriate.

A.Preconstruction Testing Service: Owner will engage a qualified independent testing agency to perform preconstruction testing indicated below. Retesting of materials that fail to comply with specified requirements shall be done at Contractor's expense.

Usually delete first five subparagraphs below if retaining prism test.

1.Clay Masonry Unit Test: For each type of unit required, according to ASTM C 67 for compressive strength.

2.Concrete Masonry Unit Test: For each type of unit required, according to ASTM C 140 for compressive strength.

Delete first two subparagraphs below if mortar is specified to comply with proportion specification. Test methods cited in first subparagraph below are those referenced in ASTM C 270 for property specification.

3.Mortar Test (Property Specification): For each mix required, according to ASTM C 109/C 109M for compressive strength[, ASTM C 1506 for water retention, and ASTM C 91 for air content].

Test method in first subparagraph below is useful for providing a baseline value to compare with results of field quality-control tests but is not appropriate for confirming compliance with compressive strength requirement of ASTM C 270 for property specification.

4.Mortar Test (Property Specification): For each mix required, according to ASTM C 780 for compressive strength.

Delete first subparagraph below if grout is specified by proportions stated in ASTM C 476 rather than by compressive strength.

5.Grout Test (Compressive Strength): For each mix required, according to ASTM C 1019.

Usually select from test methods in five subparagraphs above. Retain subparagraph below only if prism test is specified in "Performance Requirements" Article for determining compressive strength of masonry.

6.Prism Test: For each type of construction required, according to ASTM C 1314.

1.6ACTION SUBMITTALS

A.Product Data: For each type of product indicated.

B.LEED Submittals:

"Product Certificates for Credit MR 5" Subparagraph below applies to LEED-NC, LEED-CS, and LEED for Schools.

1.Product Certificates for Credit MR 5: For products and materials required to comply with requirements for regional materials indicating location and distance from Project of material manufacturer and point of extraction, harvest, or recovery for each raw material. Include statement indicating cost for each regional material and the fraction by weight that is considered regional.

C.Shop Drawings: For the following:

1.Masonry Units: Show sizes, profiles, coursing, and locations of special shapes.

2.Stone Trim Units: Show sizes, profiles, and locations of each stone trim unit required.

3.Reinforcing Steel: Detail bending and placement of unit masonry reinforcing bars. Comply with ACI 315, "Details and Detailing of Concrete Reinforcement."[$ds~Show elevations of reinforced walls.]

Retain subparagraph below for flashing material that is specially fabricated for corners, end dams, etc.

4.Fabricated Flashing: Detail corner units, end-dam units, and other special applications.

D.Samples for Initial Selection:

1.Decorative CMUs, in the form of small-scale units.

2.Pre-faced CMUs.

3.Concrete facing brick, in the form of small-scale units.

4.[Face] [Hollow] brick[, in the form of straps of five or more bricks].

5.Glazed brick.

6.Glazed structural-clay tile.

7.Stone trim.

8.Colored mortar.

9.Weep holes/vents.

Delete "Samples for Initial Selection" Paragraph above if colors and other characteristics are preselected and specified or scheduled. Retain paragraph below with or without above.

E.Samples for Verification: For each type and color of the following:

1.[Exposed] [Decorative] CMUs.

2.Pre-faced CMUs.

3.Concrete facing brick.

4.[Face] [Hollow] brick[, in the form of straps of five or more bricks].

5.Special brick shapes.

6.Glazed brick.

7.Glazed structural-clay tile.

8.Unglazed structural-clay tile.

9.Stone trim.

10.[Pigmented] [and] [colored-aggregate] mortar. Make Samples using same sand and mortar ingredients to be used on Project.

11.Weep holes[ and vents].

12.Accessories embedded in masonry.

1.7INFORMATIONAL SUBMITTALS

Retain first paragraph below for critical work where record of mockup materials is desired.

A.List of Materials Used in Constructing Mockups: List generic product names together with manufacturers, manufacturers' product names, model numbers, lot numbers, batch numbers, source of supply, and other information as required to identify materials used. Include mix proportions for mortar and grout and source of aggregates.

1.Submittal is for information only. Neither receipt of list nor approval of mockup constitutes approval of deviations from the Contract Documents unless such deviations are specifically brought to the attention of Architect and approved in writing.

Coordinate first paragraph below with qualification requirements in Section 014000 "Quality Requirements" and as supplemented in "Quality Assurance" Article.

B.Qualification Data: For testing agency.

Usually retain first paragraph below. Material certificates are required for all masonry constructed under MSJC Code.

C.Material Certificates: For each type and size of the following:

1.Masonry units.

Retain second option in first subparagraph below if required by authorities having jurisdiction or if the added assurance of quality that test reports provide is desired.

a.Include [data on material properties] [material test reports substantiating compliance with requirements].

b.For brick, include size-variation data verifying that actual range of sizes falls within specified tolerances.

c.For exposed brick, include test report for efflorescence according to ASTM C 67.

d.For surface-coated brick, include test report for durability of surface appearance after 50 cycles of freezing and thawing per ASTM C 67[ or a list of addresses of buildings in Project's area where proposed brick has been used successfully and with a history of durability].

Retain first subparagraph below only if retaining unit-strength method in "Performance Requirements" Article or if requirements for average net-area compressive strength of units are retained in Part 2.

e.For masonry units[ used in structural masonry], include data and calculations establishing average net-area compressive strength of units.

2.Cementitious materials. Include brand, type, and name of manufacturer.

3.Preblended, dry mortar mixes. Include description of type and proportions of ingredients.

4.Grout mixes. Include description of type and proportions of ingredients.

5.Reinforcing bars.

6.Joint reinforcement.

7.Anchors, ties, and metal accessories.

D.Mix Designs: For each type of mortar[ and grout]. Include description of type and proportions of ingredients.

1.Include test reports for mortar mixes required to comply with property specification. Test according to ASTM C 109/C 109M for compressive strength, ASTM C 1506 for water retention, and ASTM C 91 for air content.

2.Include test reports, according to ASTM C 1019, for grout mixes required to comply with compressive strength requirement.

Retain first paragraph below only if retaining unit-strength method in "Performance Requirements" Article.

E.Statement of Compressive Strength of Masonry: For each combination of masonry unit type and mortar type, provide statement of average net-area compressive strength of masonry units, mortar type, and resulting net-area compressive strength of masonry determined according to Tables 1 and 2 in ACI 530.1/ASCE 6/TMS 602.

F.Cold-Weather[ and Hot-Weather] Procedures: Detailed description of methods, materials, and equipment to be used to comply with requirements.

1.8QUALITY ASSURANCE

Retain first paragraph below if Contractor or manufacturer selects testing agency.

A.Testing Agency Qualifications: Qualified according to ASTM C 1093 for testing indicated.

B.Source Limitations for Masonry Units: Obtain exposed masonry units of a uniform texture and color, or a uniform blend within the ranges accepted for these characteristics, from single source from single manufacturer for each product required.

C.Source Limitations for Mortar Materials: Obtain mortar ingredients of a uniform quality, including color for exposed masonry, from single manufacturer for each cementitious component and from single source or producer for each aggregate.

D.Masonry Standard: Comply with ACI 530.1/ASCE 6/TMS 602 unless modified by requirements in the Contract Documents.

E.Sample Panels: Build sample panels to verify selections made under sample submittals and to demonstrate aesthetic effects. Comply with requirements in Section 014000 "Quality Requirements" for mockups.

1.Build sample panels for [each type of exposed unit masonry construction] [typical exterior wall] [typical interior wall] [typical exterior and interior walls] in sizes approximately [48 inches (1200 mm)] [60 inches (1500 mm)] <Insert size> long by [36 inches (900 mm)] [48 inches (1200 mm)] <Insert size> high[ by full thickness].

2.Where masonry is to match existing, erect panels adjacent and parallel to existing surface.

3.Clean[ one-half of] exposed faces of panels with masonry cleaner indicated.

4.Protect approved sample panels from the elements with weather-resistant membrane.

5.Approval of sample panels is for color, texture, and blending of masonry units; relationship of mortar and sealant colors to masonry unit colors; tooling of joints; aesthetic qualities of workmanship; and other material and construction qualities specifically approved by Architect in writing.

a.Approval of sample panels does not constitute approval of deviations from the Contract Documents contained in sample panels unless such deviations are specifically approved by Architect in writing.

Usually retain "Sample Panels" Paragraph above and delete "Mockups" Paragraph below. Revise wording if only one mockup is required.

F.Mockups: Build mockups to verify selections made under sample submittals and to demonstrate aesthetic effects and set quality standards for materials and execution.

Retain first subparagraph below for large-scale mockup or include in Section 014000 "Quality Requirements." Indicate on Drawings the portion of wall represented by mockup or draw mockup as separate element.

1.Build mockup of typical wall area as shown on Drawings.

Retain first subparagraph below for limited mockups.

2.Build mockups for [each type of exposed unit masonry construction] [typical exterior wall] [typical interior wall] [typical exterior and interior walls] in sizes approximately [48 inches (1200 mm)] [60 inches (1500 mm)] [72 inches (1800 mm)] [96 inches (2400 mm)] <Insert size> long by [36 inches (900 mm)] [48 inches (1200 mm)] [60 inches (1500 mm)] [72 inches (1800 mm)] <Insert size> high by full thickness, including face and backup wythes and accessories.

a.Include a sealant-filled joint at least 16 inches (400 mm) long in [each] [exterior wall] mockup.

b.Include lower corner of window opening[ framed with stone trim] at upper corner of exterior wall mockup. Make opening approximately 12 inches (300 mm) wide by 16 inches (400 mm) high.

c.Include through-wall flashing installed for a 24-inch (600-mm) length in corner of exterior wall mockup approximately 16 inches (400 mm) down from top of mockup, with a 12-inch (300-mm) length of flashing left exposed to view (omit masonry above half of flashing).

d.Include [metal] [wood] studs, sheathing, [building paper] [building wrap] [sheathing joint-and-penetration treatment] [air barrier], veneer anchors, flashing[, cavity drainage material], and weep holes in exterior masonry-veneer wall mockup.

e.Include [glazed structural-clay tile] [pre-faced CMUs] on one face of interior unit masonry wall mockup.

3.Where masonry is to match existing, erect mockups adjacent and parallel to existing surface.

4.Clean[ one-half of] exposed faces of mockups with masonry cleaner as indicated.

5.Protect accepted mockups from the elements with weather-resistant membrane.

6.Approval of mockups is for color, texture, and blending of masonry units; relationship of mortar and sealant colors to masonry unit colors; tooling of joints; and aesthetic qualities of workmanship.

Delete first two subparagraphs below if mockups are only for establishing appearance factors.

a.Approval of mockups is also for other material and construction qualities specifically approved by Architect in writing.

b.Approval of mockups does not constitute approval of deviations from the Contract Documents contained in mockups unless such deviations are specifically approved by Architect in writing.

Retain subparagraph below if mockups are erected as part of building rather than separately and the intention is to make an exception to the default requirement in Section 014000 "Quality Requirements" for demolishing and removing mockups when directed unless otherwise indicated.

7.Approved mockups may become part of the completed Work if undisturbed at time of Substantial Completion.

Retain paragraph below if Work of this Section is extensive or complex enough to justify a preinstallation conference. If retaining, coordinate with Division 01.

G.Preinstallation Conference: Conduct conference at Project site to comply with requirements in Section 013100 "Project Management and Coordination."

1.9DELIVERY, STORAGE, AND HANDLING

A.Store masonry units on elevated platforms in a dry location. If units are not stored in an enclosed location, cover tops and sides of stacks with waterproof sheeting, securely tied. If units become wet, do not install until they are dry.

Delete first two paragraphs below if requiring Contractor to use a preblended, dry mortar mix.

B.Store cementitious materials on elevated platforms, under cover, and in a dry location. Do not use cementitious materials that have become damp.

C.Store aggregates where grading and other required characteristics can be maintained and contamination avoided.

Always retain first paragraph below in case Contractor uses a preblended, dry mortar mix.

D.Deliver preblended, dry mortar mix in moisture-resistant containers designed for use with dispensing silos. Store preblended, dry mortar mix in delivery containers on elevated platforms, under cover, and in a dry location or in covered weatherproof dispensing silos.

E.Store masonry accessories, including metal items, to prevent corrosion and accumulation of dirt and oil.

1.10PROJECT CONDITIONS

A.Protection of Masonry: During construction, cover tops of walls, projections, and sills with waterproof sheeting at end of each day's work. Cover partially completed masonry when construction is not in progress.

Increase extent of cover in first subparagraph below as needed to suit local climatic conditions.

1.Extend cover a minimum of 24 inches (600 mm) down both sides of walls and hold cover securely in place.

2.Where one wythe of multiwythe masonry walls is completed in advance of other wythes, secure cover a minimum of 24 inches (600 mm) down face next to unconstructed wythe and hold cover in place.

B.Do not apply uniform floor or roof loads for at least 12 hours and concentrated loads for at least three days after building masonry walls or columns.

C.Stain Prevention: Prevent grout, mortar, and soil from staining the face of masonry to be left exposed or painted. Immediately remove grout, mortar, and soil that come in contact with such masonry.

1.Protect base of walls from rain-splashed mud and from mortar splatter by spreading coverings on ground and over wall surface.

2.Protect sills, ledges, and projections from mortar droppings.

3.Protect surfaces of window and door frames, as well as similar products with painted and integral finishes, from mortar droppings.

4.Turn scaffold boards near the wall on edge at the end of each day to prevent rain from splashing mortar and dirt onto completed masonry.

D.Cold-Weather Requirements: Do not use frozen materials or materials mixed or coated with ice or frost. Do not build on frozen substrates. Remove and replace unit masonry damaged by frost or by freezing conditions. Comply with cold-weather construction requirements contained in ACI 530.1/ASCE 6/TMS 602.

1.Cold-Weather Cleaning: Use liquid cleaning methods only when air temperature is 40 deg F (4 deg C) and higher and will remain so until masonry has dried, but not less than seven days after completing cleaning.

E.Hot-Weather Requirements: Comply with hot-weather construction requirements contained in ACI 530.1/ASCE 6/TMS 602.

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