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	SECTION 04225
	ARCHITECTURAL CONCRETE MASONRY UNITS
	** NOTE TO SPECIFIER ** Clayton Block Company; architectural, acoustical, and reinforced concrete masonry units. This section is based on the products of Clayton Block Co., which is located at: P.O. Box 3015 Lakewood, NJ 08701-8115 Tel: (800) 662-3044 Fax: 732-367-9473 Email: katroeclay@aol.com http://www.claytonco.com [ Additional Product Data ] Founded in 1951, Clayton Block Company has stayed on the cutting edge of construction material technology. Famous for their concrete, Clayton Block Company is also capable of producing over 360 different block shapes, designs and textures and has successfully worked with architects and contractors to design and manufacture custom block for specific projects. IMPORTANT: This section does not include provisions for installing CMU in masonry walls. Either add those provisions to this section or cross-reference another section that includes those provisions.
	PART 1	GENERAL
	1.1	SECTION INCLUDES
	** NOTE TO SPECIFIER ** Delete paragraphs below which are not applicable to the project or are not specified in this section.
		A.	Polished face architectural concrete masonry units.
		B.	Ground faced architectural concrete masonry units.
		C.	Split faced architectural concrete masonry units.
		D.	Split-ribbed architectural concrete masonry units.
		E.	Smooth colored architectural concrete masonry units,
		F.	Acoustical concrete masonry units.
		G.	Reinforced concrete masonry units.
	1.2	RELATED SECTIONS
	** NOTE TO SPECIFIER ** Delete sections below not relevant to this project; add others as required.
		A.	Section 04080 - Masonry Anchorage and Reinforcement.
		B.	Section 04092 - Embedded Flashing.
		C.	Section 04210 - Clay Masonry Units.
		D.	Section 04812 - Glass Unit Masonry.
		E.	Section 05505 - Loose Steel Lintels.
		F.	Section 07200 - Thermal Protection.
	1.3	REFERENCES
	** NOTE TO SPECIFIER ** Delete references from the list below that are not actually required by the text of the edited section; add others as required.
		A.	ASTM A 82 - Standard Specification for Steel Wire, Plain, for Concrete Reinforcement; 2001.
		B.	ASTM A 123/A 123M - Standard Specification for Zinc (Hot-Dip Galvanized) Coatings on Iron and Steel Products; 2001.
		C.	ASTM A 153/A 153M - Standard Specification for Zinc Coating (Hot-Dip) on Iron and Steel Hardware; 2001.
		D.	ASTM A 307 - Standard Specification for Carbon Steel Bolts and Studs, 60,000 PSI Tensile Strength; 2000.
		E.	ASTM A 615/A 615M - Standard Specification for Deformed and Plain Billet-Steel Bars for Concrete Reinforcement; 2001.
		F.	ASTM C 90 - Standard Specification for Load-bearing Concrete Masonry Units; 2001.
		G.	ASTM C 140 - Standard Test Methods of Sampling and Testing Concrete Masonry Units; 2001.
		H.	ASTM C 144 - Standard Specification for Aggregate for Masonry Mortar; 1999.
		I.	ASTM C 150 - Standard Specification for Portland Cement; 2002.
		J.	ASTM C 207 - Standard Specification for Hydrated Lime for Masonry Purposes; 1991 (re-approved 1997).
		K.	ASTM C 216 - Standard Specification for Facing Brick (Solid Masonry Units Made from Clay or Shale); 2001.
		L.	ASTM C 270 - Standard Specification for Mortar for Unit Masonry; 2001.
		M.	ASTM C 404 - Standard Specification for Aggregates for Masonry Grout; 1997.
		N.	ASTM C 423 - Standard Test Method for Sound Absorption and Sound Absorption Coefficients by the Reverberation Room Method; 2001.
		O.	ASTM C 476 - Standard Specification for Grout for Masonry; 2001.
		P.	ASTM C 744 - Standard Specification for Prefaced Concrete and Calcium Silicate Masonry Units; 1999.
		Q.	ASTM D 1056 - Standard Specification for Flexible Cellular Materials -- Sponge or Expanded Rubber; 2000.
		R.	ASTM D 2126 - Standard Test Method for Response of Rigid Cellular Plastics to Thermal and Humid Aging; 1999.
		S.	ASTM E 84 - Standard Test Method for Surface Burning Characteristics of Building Materials; 2001.
		T.	ASTM E 96 - Standard Test Methods for Water Vapor Transmission of Materials; 2000.
		U.	ASTM E 119 - Standard Test Methods for Fire Tests of Building Construction and Materials; 2000.
	1.4	SUBMITTALS
		A.	Submit under provisions of Section 01300.
		B.	Product Data: Manufacturer's product data for each type of masonry unit, accessory, and other manufactured products.
		C.	Compliance: Certifications that each type complies with specified requirements.
		D.	Color Selection: For initial selection submit:
			1.	Unit masonry samples showing full extent of colors and textures available for each type of exposed unit masonry required.
	** NOTE TO SPECIFIER ** Delete the following paragraph if colored mortar is not required.
			2.	Colored mortar samples showing full extent of colors available.
	Delete the following paragraph if samples are not required.
		E.	Samples: For verification purposes submit:
			1.	Samples for each type of exposed masonry unit specified, including full range of color and texture to be expected in completed work.
	** NOTE TO SPECIFIER ** Delete the following paragraph if colored mortar is not required.
			2.	Colored masonry mortar samples for each color required. Show full range of color which can be expected in finished work; label samples to indicate type and amount of colorant used.
	Edit the following article as required for the project. If neither fire rated assemblies nor mock-ups are required, delete the entire article.
	1.5	QUALITY ASSURANCE
		A.	Fire Performance Characteristics: Where indicated, provide materials and construction which are identical to those of assemblies, equivalent thickness, whose fire endurance has been determined in compliance with ASTM E 119 by means acceptable to authorities having jurisdiction.
		B.	Mock-Ups:
			1.	Before installation of masonry work, erect sample wall panels:
				a.	To further verify selections made for color and texture characteristics under sample submittals of masonry units and mortar.
				b.	To represent completed masonry work for qualities of appearance, materials, construction, and workmanship.
			2.	Erect mock-ups approximately 6 feet (1829 mm) long by 4 feet (1219 mm) high by full thickness, for the following types of masonry, including face and back-up wythes as well as accessories:
				a.	Each type of exposed unit masonry work.
				b.	Typical exterior wall.
				c.	Typical interior wall.
	1.6	DELIVERY, STORAGE, AND HANDLING
		A.	Deliver masonry materials to project in undamaged condition.
	** NOTE TO SPECIFIER ** Delete the following paragraph if Architectural Concrete Block units are not specified in this section.
			1.	Deliver Architectural Masonry Units on wood pallets, packaged with protective cushions between all architectural block layers to eliminate chipping; protect each pallet with a plastic cover.
		B.	Store and handle materials to prevent their deterioration or damage due to moisture, temperature changes, contaminants, corrosion, or other causes.
		C.	Store cementitious materials off the ground, under cover, and in a dry location.
		D.	Store and protect aggregates where grading and other required characteristics can be maintained.
		E.	Store masonry accessories, including metal items, to prevent deterioration by corrosion and accumulation of dirt.
	1.7	ENVIRONMENTAL REQUIREMENTS
		A.	Do not lay masonry units that are wet or frozen.
		B.	Remove ice or snow formed on masonry bed by carefully applying heat until top surface is dry to the touch.
		C.	Remove masonry damaged by freezing conditions.
		D.	Mortar: Heat mortar materials while masonry work is progressing, maintaining mixing temperature selected within 10 degrees F (6 degrees C); temperature ranges below apply to air temperature at time of installation.
			1.	40 Degrees to 32 Degrees F (4.5 Degrees to 0 Degrees C): Heat mixing water to produce mortar temperature between 40 degrees and 120 degrees F (4.5 degrees and 49 degrees C).
			2.	32 Degrees to 25 Degrees F (0 Degrees to Minus 4 Degrees C):
				a.	Heat mixing water and sand to produce mortar temperature between 40 degrees and 120 degrees F (4.5 degrees and 49 degrees C).
				b.	Maintain temperature of mortar on boards above freezing.
			3.	25 Degrees to 20 Degrees F (Minus 4 Degrees to Minus 6.7 Degrees C):
				a.	Heat mixing water and sand to produce mortar temperature between 40 degrees and 120 degrees F (4.5 degrees and 49 degrees C).
				b.	Maintain temperature of mortar on boards above freezing.
				c.	Heat both sides of walls under construction using salamanders or other heat sources.
				d.	Use windbreaks or enclosures when wind exceeds 15 mph (24 km/h).
			4.	20 Degrees F and Below (Minus 6.7 Degrees C and Below):
				a.	Heat mixing water and sand to produce mortar temperature between 40 degrees and 120 degrees F (4.5 degrees and 49 degrees C); do not heat mixing water to above 160 degrees F (71 degrees C).
				b.	Heat masonry units to above 20 degrees F (6.7 degrees C) at time of laying.
				c.	Provide enclosure and auxiliary heat to maintain an air temperature of at least 40 degrees F (4.5 degrees C) for 24 hours after laying units.
		E.	Grout: Heat grout materials while masonry work is progressing, maintaining mixing temperature selected within 10 degrees F (6 degrees C); temperature ranges below apply to anticipated minimum night temperatures.
			1.	40 Degrees to 32 Degrees F (4.5 Degrees to 0 Degrees C): Follow normal masonry procedures.
			2.	32 Degrees to 25 Degrees F (0 Degrees to Minus 4 Degrees C): Heat grout materials to 90 degrees F (32 degrees C) to produce in-place grout temperature of 70 degrees F (21 degrees C) at end of work day.
			3.	25 Degrees to 20 Degrees F (Minus 4 Degrees to Minus 6.7 Degrees C):
				a.	Heat grout materials to 90 degrees F (32 degrees C) to produce in-place grout temperature of 70 degrees F (21 degrees C) at end of workday.
				b.	Heat both sides of walls under construction using salamanders or other heat sources.
				c.	Use windbreaks or enclosures when wind exceeds 15 mph (24 km/h).
			4.	20 Degrees F and Below (Minus 6.7 Degrees C and Below):
				a.	Heat grout materials to 90 degrees F (32 degrees C) to produce in-place grout temperature of 70 degrees F (21 degrees C) at end of work day; do not heat mixing water to above 160 degrees F (71 degrees C).
				b.	Heat masonry units to above 20 degrees F (6.7 degrees C) at time of laying.
				c.	Provide enclosure and auxiliary heat to maintain an air temperature of at least 40 degrees F (4.5 degrees C) for 24 hours after laying units.
		F.	Protect completed masonry and masonry not being worked on in the following manner. For grouted masonry, temperature ranges below apply to anticipated minimum night temperatures. For all other masonry, temperature ranges below apply to mean daily air temperature.
			1.	40 Degrees to 32 Degrees F (4.5 Degrees to 0 Degrees C): Protect masonry from rain or snow for at least 24 hours by covering with weather-resistant membrane.
			2.	32 Degrees to 25 Degrees F (0 Degrees to Minus 4 Degrees C): Completely cover masonry with weather-resistant membrane for at least 24 hours.
			3.	25 Degrees to 20 Degrees F (Minus 4 Degrees to Minus 6.7 Degrees C): Completely cover masonry with weather-resistant insulating blankets or similar protection for at least 24 hours; 48 hours for grouted masonry.
			4.	20 Degrees F and Below (Minus 6.7 Degrees C and Below):
				a.	Except as otherwise indicated, maintain masonry temperatures above 32 degrees F (0 degrees C) for 24 hours, using enclosures and supplementary heat, electric heating blankets, infrared lamps, or other methods proven to be satisfactory.
				b.	For grouted masonry, maintain heated enclosure to 40 degrees F (4.5 degrees C) for 48 hours.
	PART 2	PRODUCTS
	2.1	MANUFACTURERS
		A.	Acceptable Manufacturer: Clayton Block, which is located at: P. O. Box 3015 ; Lakewood, NJ 08701; Toll Free Tel: 800-662-3044; Tel: 732-751-7600; Email: request info; Web: www.claytonco.com
	** NOTE TO SPECIFIER ** Delete one of the following two paragraphs; coordinate with requirements of Division 1 section on product options and substitutions.
		B.	Requests for substitutions will be considered in accordance with provisions of Section 01600.
		C.	Obtain exposed masonry units of uniform texture and color, or a uniform blend within the ranges accepted for these characteristics, from one manufacturer for each different product required for each continuous surface or visually related surfaces.
		D.	Obtain mortar ingredients of uniform quality including color for exposed masonry, from one manufacturer for each cementitious component and from one source and producer for each aggregate.
	2.2	CONCRETE MASONRY UNITS
		A.	Concrete Masonry Units - General:
			1.	Provide units complying with characteristics indicated below for each form of block included for weight classification.
			2.	Size: Manufacturer's standard units with face dimensions of 16 inches (406 mm) long by 8 inches (203 mm) high, nominal; 15-5/8 inches (396 mm) long by 7-5/8 inches (194 mm) high, actual, by thicknesses indicated.
			3.	Hollow and Solid Load-Bearing Block: ASTM C 90, normal weight, 125 pounds per cubic foot (2000 kg per cubic m) dry weight.
		B.	Architectural Concrete Block: Clayton Architectural Block series; all contain integral water repellent.
	** NOTE TO SPECIFIER ** Delete all but one of the following face paragraphs; edit the text to reflect if more than one is to be used, and indicate on the drawings where each is to be used.
			1.	Face: Polished; highly dense, machine polished.
				a.	Minimum Net Compressive Strength: 4000 psi (28 MPa).
				b.	Absorption: Not to exceed 4.5 lbs/cu ft (72 kg/cu m) when tested in accordance with ASTM C 140.
			2.	Face: GlasStone; highly dense, machine polished, containing in aggregate, a minimum weighted average of 20% post-consumer recycled content material or a minimum weighted average 40% post-industrial recycled content material as outlined in U.S. Green Building Council - LEED Requirements for Credit 4.1.
				a.	Minimum Net Compressive Strength: 4000 psi.
				b.	Maximum Absorption: 4.5%.
			3.	Face: Ground; ground textured appearance.
				a.	Minimum Net Compressive Strength: 4000 psi (28 MPa).
				b.	Absorption: Not to exceed 4.5 lbs/cu ft (72 kg/cu m) when tested in accordance with ASTM C 140.
			4.	Face: Split; unevenly textured appearance.
			5.	Face: Split Rib; 4-rib.
			6.	Face: Split Rib; 8-rib.
			7.	Face: Smooth, colored; standard concrete masonry unit texture.
			8.	Weight: Normal weight; When tested in accordance with ASTM C 90.
	** NOTE TO SPECIFIER ** Delete one of the following two paragraphs.
			9.	Size: _________.
			10.	Size: As indicated on drawings.
	** NOTE TO SPECIFIER ** Delete one of the following two paragraphs.
			11.	Color: ________.
			12.	Color: As selected by Architect from manufacturer's full line for each specified face.
			13.	Shapes: Provide special shapes where required for lintels, jambs, corners, sash, control joints, headers, bonding, and other special conditions.
			14.	Cleaning: Use masonry detergent cleaners in accordance with manufacturer's directions; do not use steel wool or other abrasives, or any product containing unbuffered hydrochloric acid or other acids. The use of high-pressure washers is NOT recommended.
		C.	Acoustical Concrete Block: Soundblox and Soundcell; produced by Clayton Block Company under license with The Proudfoot Company, Botsford, CT.
			1.	Weight: Medium weight; When tested in accordance with ASTM C 90.
			2.	Type R, RR, RSC, and RF (for Soundblox only): Provide filter elements of specially fabricated fibrous material having metal septa laminated to one side, installed with septa facing away from slots.
			3.	Sound Absorption: In accordance with ASTM C 423.
		D.	Reinforced Concrete Masonry Units: Grout Block; as produced by Clayton Block Company.
			1.	Weight: Medium weight; When tested in accordance with ASTM C 90.
			2.	Minimum Net Compressive Strength: 3,000 psi (21 MPa) when tested in accordance with ASTM C 90.
	** NOTE TO SPECIFIER ** Delete one of the following two paragraphs.
			3.	Size: __________.
			4.	Size: As indicated on drawings.
			5.	Reinforcement Bars: Deformed bars complying with ASTM A 615, of the following grades unless otherwise indicated:
				a.	No. 3 to No. 6 Bars: Grade 40.
				b.	No. 6 to No. 18 Bars: Grade 60.
				c.	Shop fabricate reinforcement bars which are shown to be bent or hooked.
			6.	Mortar: ASTM C 270, Type M.
			7.	Concrete Fill: 3,000 psi (20.7 MPa) compressive strength, 8 inch (203 mm) minimum slump.
	2.3	MASONRY CELL INSULATION
		A.	Masonry Cell Insulation: Expanded polystyrene masonry block inserts; manufactured as Korfil or Icon (W.R. Grace & Co. Construction Products, Cambridge, MA) or approved equal.
	** NOTE TO SPECIFIER ** Insert Type I or II in the following paragraph in accordance with project requirements
			1.	Type: _____.
			2.	Dimensional Stability: 0.55 percent, complying with ASTM D 2126.
			3.	Water Vapor Transmission: Complying with ASTM E 96:
	** NOTE TO SPECIFIER ** Delete one of the following two paragraphs; edit to reflect the Type selected above.
				a.	Type I: 1.71 percent.
				b.	Type II: 1.27 percent.
			4.	Thermal Resistance: Complying with ASTM C 518, 75 degrees F (24 degrees C):
	** NOTE TO SPECIFIER ** Delete one of the following two paragraphs; edit to reflect the Type selected above.
				a.	Type I: 3.85.
				b.	Type II: 4.08.
			5.	Surface Burning Characteristics: Complying with ASTM E 84; flame spread less than 75, smoke developed less than 450.
	2.4	MORTAR AND GROUT PRODUCTS
		A.	Portland Cement: ASTM C 150.
	** NOTE TO SPECIFIER ** Delete one of the following two paragraphs.
			1.	Type I, for Construction above 40 degrees F (4.5 degrees C).
			2.	Type III, for Construction below 40 degrees F (4.5 degrees C)I.
	** NOTE TO SPECIFIER ** Delete one of the following two paragraphs.
			3.	Color: Natural.
			4.	Color: White.
		B.	Hydrated Lime: ASTM C 207, Type S.
		C.	Aggregate, Mortar:
	** NOTE TO SPECIFIER ** Delete one of the following two paragraphs.
			1.	For Joints Greater Than 1/4 inch (6 mm): ASTM C 144.
			2.	For Joints Less than 1/4 inch (6 mm): Use aggregate graded with 100 percent passing the No. 16 sieve.
			3.	White Aggregates: Natural white sand or ground white stone.
			4.	Aggregate, Grout: ASTM C 404.
		D.	Water: Clean and potable.
		E.	Accelerators: Non-chloride admixtures to speed set-up of mortar in cold weather construction, subject to compliance with requirements:
	** NOTE TO SPECIFIER ** Delete one of the following two paragraphs.
			1.	Acceptable Product: "Accelguard 80," Euclid Chemical Co.
			2.	Acceptable Product: "Dur-O-Guard," Dur-O-Wal, Inc.
		F.	Integral Water Repellent Admixture: Chemstrong AquaShield by Great Eastern Technologies, LLC, Yardville, NJ.
	2.5	JOINT REINFORCEMENT, TIES, AND ANCHORS
		A.	Manufacturers:
	** NOTE TO SPECIFIER ** Delete all but one of the following manufacturer paragraphs.
			1.	AA Wire Products Co.
			2.	Dur-O-Wal, Inc.
			3.	Heckman Building Products, Inc.
			4.	Hohmann & Barnard, Inc.
			5.	Masonry Reinforcing Corp. of America
			6.	National Wire Products Corp.
		B.	General: Comply with requirements indicated below for basic materials, as well as requirements for each form of joint reinforcement, tie, and anchor for size and other characteristics.
		C.	Hot-Dip Galvanized Steel Wire: Uncoated wire in accordance with ASTM A 82, with zinc coating applied after prefabrication into units in accordance with ASTM A 123, 1.5 oz. per sq. ft. (0.46 kg/sq m) of wire surface.
		D.	Joint Reinforcement: Welded-wire units prefabricated with deformed continuous side rods and plain cross rods into straight lengths of not less than 10 feet (3 m), with prefabricated corner and tee units.
			1.	Width: Approximately 2 inches (51 mm) less than nominal width of walls and partitions, providing mortar cover of not less than 5/8 inch (16 mm) on joint faces exposed to exterior and 1/2 inch (13 mm) elsewhere.
			2.	Wire Size, Side Rods: 9 gauge, 0.15 inches (4 mm).
			3.	Wire Size, Cross Rods: 9 gauge, 0.15 inches (4 mm).
			4.	Wire Size, Two-Piece Adjustable: 9 gauge (6 mm) diameter in exterior walls.
			5.	Single-Wythe Configuration: Truss design, continuous diagonal cross rods spaced not more than 16 inches (406 mm) on center.
			6.	Multi-Wythe Configuration, Non-Aligned Bed Joints in Cavity or Composite Masonry Walls:
				a.	Adjustable wall tie pintle section fitting into eye section of rectangular box-type cross ties spaced not more than 16 inches (406 mm) on center.
				b.	Truss type units with side rods spaced for embedment within each face shell of back-up wythe, ties extended to within 1 inch (25 mm) of exterior face of facing wythe.
		E.	Flexible Anchors, Masonry to Structural Framework: Two-piece anchors permitting vertical or horizontal differential movement between wall and framework parallel to, but resisting tension and compression forces perpendicular to, plane of wall.
			1.	Anchorage to Steel Framework: Manufacturer's standard anchors with crimped 1/4 inch (6 mm) diameter wire anchor section for welding to steel 3/16", triangular-shaped wire tie section sized to extend within 1 inch (25 mm) of exterior face of facing wythe.
		F.	Unit Type Masonry Inserts in Concrete: Cast iron or malleable iron inserts of type and size indicated.
		G.	Dovetail Slots: Dovetail slots with filler strips, of slot size indicated; 22-gage sheet metal.
		H.	Anchor Bolts: Steel bolts with hex nuts and flat washers, complying with ASTM A 307, Grade A, hot dip galvanized complying with ASTM A 153, Class C; sizes and configurations indicated.
		I.	Pencil Rods at Construction Joints: Dowels dipped in tar for half of length.
		J.	Reinforcing Bars: Deformed steel, ASTM A 615, Grade 60 for bars No. 3 to No. 18.
	2.6	MISCELLANEOUS MASONRY ACCESSORIES
		A.	Non-Metallic Expansion Joint Strips: Premolded, flexible cellular neoprene rubber filler strips, complying with ASTM D 1056, Grade RE41E1, capable of compression up to 35 percent; width and thickness indicated.
		B.	Weepholes: Quadrovent.
	** NOTE TO SPECIFIER ** IMPORTANT: This section does not include provisions for installing CMU in masonry walls. Either add those provisions to this section or cross-reference another section that includes those provisions.
	PART 3	EXECUTION
	3.1	MORTAR AND GROUT MIXES
		A.	Mortar and Grout - General: Use only specified additives; do not use calcium chloride.
			1.	Limit cementitious materials in mortar to Portland Cement and lime.
			2.	Mixing:
				a.	Combine and thoroughly mix cementitious materials, water, aggregates, and admixtures in a mechanical batch mixer.
				b.	Comply with applicable ASTM standards and material manufacturers' recommendations for mixing time and water content.
				c.	Measure and batch materials by volume to accurately control and maintain required proportions.
				d.	Measure sand using container constructed for consistent volume measurement; measurement of sand by shovel not permitted.
		B.	Unit Masonry, Mortar: Complying with ASTM C 270, Proportion Specifications, Portland Cement-Lime Mortar, Types as follows unless otherwise indicated:
			1.	Type M: Masonry below grade, in contact with earth, and where indicated; 8 to 12 percent maximum air content.
			2.	Type N: Interior non-load-bearing walls; 8 to 14 percent maximum air content.
			3.	Type S: All other masonry; 8 to 12 percent maximum air content.
			4.	Colored Aggregate Mortar: Mortar of color required by use of colored aggregates in combination with selected cementitious materials.
				a.	Color: As selected by Architect.
		C.	Unit Masonry, Grout: Complying with ASTM C 476, consistency at time of placement to completely fill all spaces intended to receive grout.
			1.	Mix: Portland cement, sand, gravel, and water; proportion as required to provide minimum 3,000 psi (21 MPa) 28-day compressive strength.
			2.	Use: Reinforced masonry lintels, bond beams, reinforced masonry piers, and wherever grouting full is indicated or specified.
	END OF SECTION