SECTION 04330

CAVITY WALL MASONRY SYSTEM

PART 1 GENERAL

SECTION INCLUDES

[Face brick] [Glazed brick] [__________] face veneer wythe.

[Concrete masonry] [Brick] [__________] backup wythe.

Reinforcement, anchorage, and accessories.

PRODUCTS FURNISHED BUT NOT INSTALLED UNDER THIS SECTION

Section [_____ - __________;] Special anchors for placement in [__________.]

PRODUCTS INSTALLED BUT NOT FURNISHED UNDER THIS SECTION

Section [_____ - __________;] Placement of precast concrete [anchors.] [__________.]

Section 05120 - Structural Steel: Placement of steel anchors for [__________.]

Section 05210 - Steel Joists: Placement of steel bearing pads for joists.

Section 05500 - Metal Fabrications: Placement of loose steel lintels.

Section [_____ - _________:] Placement of fabricated steel items.

Section 07620 - Flashing and Sheet Metal: Placement of reglets for flashings.

Section [_____ - __________:] Placement of window anchors in [__________.]

RELATED SECTIONS

Section [01400 - Quality Control:] [01410 - Testing Laboratory Services:] Testing laboratory services.

Section 04100 - Mortar: Mortar and grout.

Section 04235 - Preassembled Masonry Panels.

Section 04270 - Glass Unit Masonry.

Section 04410 - Rough Stone: Rough stone bonded to masonry.

Section 04450 - Cut Stone Veneer: [Marble] [Granite] [Limestone] [Slate] veneer bonded to masonry.

Section 04500 - Masonry Restoration and Cleaning.

Section 07212 - Rigid Insulation: Insulation for cavity spaces.

Section 07216 - Granular Insulation: Loose fill insulation for masonry [unit cores.] [wall cavity.]

Section 07900 - Joint Sealers: Rod and sealant at [control] [and] [expansion] joints.

Section [_____ - __________:] Fireplace and chimney flue accessories.

ALLOWANCES

Refer to Section [01021 - Cash Allowances] [01005 -Administrative Provisions] for the Cash Allowance Sum applicable to this Section of work.

This allowance includes purchase and delivery of [glazed] [face brick.] [__________.] Installation is included in this Section and is part of the Contract Sum.

****** [OR] ******

This allowance includes purchase, delivery, and installation

of [glazed.] [face brick.] [__________.]

REFERENCES

ANSI/ASTM A82 - Cold Drawn Steel Wire for Concrete Reinforcement.

ANSI/ASTM C34 - Structural Clay Load Bearing Wall Tile.

ANSI/ASTM C55 - Concrete Building Brick.

ANSI/ASTM C56 - Structural Clay Non-Load Bearing Tile.

ANSI/ASTM C73 - Calcium Silicate Face Brick (Sand-Lime Brick).

ANSI/ASTM C126 - Ceramic Glazed Structural Clay Facing Tile, Facing Brick, and Solid Masonry Units.

ANSI/ASTM C212 - Structural Clay Facing Tile.

ANSI/ASTM C216 - Facing Brick (Solid Masonry Units Made From Clay or Shale).

ANSI/ASTM C315 - Clay Flue Linings.

ANSI/ASTM C530 - Structural Clay Non-Load Bearing Screen Tile.

ANSI/ASTM C652 - Hollow Brick (Hollow Masonry Units Made From Clay or Shale).

ASTM A123 - Zinc (Hot-Dip Galvanized) Coatings on Iron and Steel Products.

ASTM A167 - Stainless and Heat-Resisting Chromium-Nickel Steel Plate.

ASTM A525 - Steel Sheet, Zinc Coated, (Galvanized) by the Hot-Dip Process.

ASTM A580 - Stainless and Heat-Resisting Steel Wire.

ASTM B370 - Copper Sheet and Strip for Building Construction.

ASTM C27 - Fireclay and High-Alumina Refractory Brick.

ASTM C62 - Building Brick (Solid Masonry Units Made From

Clay or Shale).

ASTM C90 - Hollow Load Bearing Concrete Masonry Units.

ASTM C129 - Non-Load Bearing Concrete Masonry Units.

ASTM C145 - Solid Load Bearing Concrete Masonry Units.

ASTM C744 - Prefaced Concrete and Calcium Silicate Masonry Units.

IMIAC - International Masonry Industry All-Weather Council: Recommended Practices and Guide Specification for Cold Weather Masonry Construction.

SUBMITTALS

Submit product data under provisions of Section [01300.] [01340.]

Submit product data for [decorative] [__________] masonry units and [fabricated wire reinforcement.] [_______________.]

Submit samples under provisions of Section [01300.] [01340.]

Submit [four] [_____] samples of [decorative block] [face brick] [prefaced] [__________] units to illustrate color, texture and extremes of color range.

Submit manufacturer's certificate under provisions of Section [01400] [01405] that [products] [__________] meet or exceed [specified requirements.] [_______________.]

Submit manufacturer's installation instructions under provisions of Section [01300.] [01340.]

QUALIFICATIONS

Installer: Company specializing in performing the work of this Section with minimum [_____] years [documented] experience.

MOCK-UP

Provide mock-up of cavity wall masonry under provisions of Section [01400.] [01405.]

Erect units to [3 x 4] [_____ x _____] feet ([900 x 1 200] [_____ x _____] mm) panel size, include specified mortar and accessories.

When accepted, mock-up will demonstrate minimum standard for the Work. Mock-up may [not] remain as part of the Work.

PRE-INSTALLATION CONFERENCE

Convene [one] [_____] week prior to commencing work of this Section, under provisions of Section [01200.] [01220.]

DELIVERY, STORAGE, AND HANDLING

Deliver products to site under provisions of Section [01600.] [01610.]

Store and protect products under provisions of Section [01600.] [01620.]

Accept [glazed] [prefaced] [__________] units on site. Inspect for damage.

ENVIRONMENTAL REQUIREMENTS

Maintain materials and surrounding air temperature to minimum 50 degrees F (10 degrees C) prior to, during, and 48 hours after completion of masonry work.

****** [OR] ******

Cold Weather Requirements: IMIAC - Recommended Practices and Specifications for Cold Weather Masonry Construction.

SEQUENCING AND SCHEDULING

Coordinate work under provisions of Section [01005.] [01040.] [01041.]

Coordinate the masonry work with [[__________] veneer.] [installation of window anchors.] [_________________.]

EXTRA MATERIALS

Submit under provisions of Section [01700.] [01750.]

Furnish [50] [_____] of each size, color, and type of [glazed] [prefaced] units.

PART 2 PRODUCTS

MANUFACTURERS - CONCRETE MASONRY UNITS

[______________________________] Product [__________.]

[______________________________] Product [__________.]

[______________________________] Product [__________.]

Substitutions: Under provisions of Section [01600.] [01630.]

CONCRETE MASONRY UNITS

Hollow Load Bearing Block Units: ASTM C90, Grade [N,] [S,] Type [I - Moisture Controlled;] [II - Non-moisture Controlled;] [normal] [medium] [light] weight.

Solid Load Bearing Block Units: ASTM C145, Grade [N,] [S,] Type [I - Moisture Controlled;] [II - Non-moisture Controlled;] [normal] [medium] [light] weight.

[Hollow] [Solid] Non-Load Bearing Block Units: ASTM C129, Type [I - Moisture Controlled;] [II - Non-moisture Controlled;] [normal] [medium] [light] weight.

Decorative Block Units: ASTM [C90,] [_____,] Grade [N,] [S,] Type [I - Moisture Controlled;] [II - Non-moisture Controlled;] [_____] color [as selected] to the following design:

[Single scored horizontally] [Single scored vertically] [Double scored vertically] [Triple scored vertically] to a ['V'] [square] [half round] cut.

****** [OR] ******

[Ribbed] [Ribbed and split] with [three] [four] vertical ribs.

****** [OR] ******

[Ground face.] [_______________.]

Prefaced Block Units: ASTM C744 with resinous surfacing on [ANSI/ASTM C55] [ASTM C145] [ASTM C90] [ASTM C129] masonry units, Grade [N,] [S,] Type [I - Moisture Controlled;] [II - Non-moisture Controlled;] [normal] [medium] [light] weight; [_____] color[.] [as selected.]

Concrete Brick Units: ANSI/ASTM C55, [Grade [N,] [S,] Type [I - Moisture Controlled;] [II - Non-moisture Controlled;] [normal] [light] weight.] [of same Grade, Type, and weight as block units.]

Masonry Units: Nominal modular size of [_____ x _____ x _____] inches ([_____ x _____ x _____] mm). Provide special units for 90 degree corners, bond beams, lintels[,][.] [coved base][.] [and] [bullnosed corners.]

MANUFACTURERS - BRICK UNITS

[______________________________] Product [__________.]

[______________________________] Product [__________.]

[______________________________] Product [__________.]

Substitutions: Under provisions of Section [01600.] [01630.]

BRICK UNITS

Face Brick: ANSI/ASTM C216, Type [FBS,] [FBX,] [FBA,] Grade [MW;] [SW;] [_____] color[.] [as selected.]

Building Brick: ASTM C62, Grade [NW;] [SW;] [MW;] solid units.

Hollow Facing and Building Brick: ANSI/ASTM C652, Grade [SW,] [MW,] Type [HBS;] [HBX;] [HBA;] [HBB;] [_____] color[.] [as selected.]

Sand-Lime Face Brick: ANSI/ASTM C73, Grade [SW.] [MW.]

Ceramic Glazed Face Brick: ANSI/ASTM C126, Grade [S -Select,] [SS - Select Sized,] Type [I - Single] [II - Two Faced] units.

Fire Brick: ASTM C27 Class [Super-duty [Regular] [Spall-Resistant] [Slag-Resistant] Type,] [High-duty [Regular] [Spall-Resistant] [Slag-Resistant] Type,] [Semi-silica,] [Medium-duty,] [Low-duty,] with an alumina content of [_____] percent.

Brick Masonry Units: Nominal modular size of [_____ x _____ x _____] inches ([_____ x _____ x _____] mm). Provide special units for [90] [_____] degree corners, [lintels][,][.] [bullnosed corners][,][.] [and] [_______________.]

[Special Brick Shape: Shaped to [profile indicated;] [________________;] surface texture on [_____] sides[.] [and ends.]]

MANUFACTURERS - CLAY TILE UNITS

[______________________________] Product [__________.]

[______________________________] Product [__________.]

[______________________________] Product [__________.]

Substitutions: Under provisions of Section [01600.] [01630.]

CLAY TILE UNITS

Clay Load Bearing Wall Tile: ANSI/ASTM C34, Grade [LBX,] [LB,] [_____] color[,] [as selected,] [_____] texture, [_____] finish.

Clay Non-Load Bearing Screen Tile: ANSI/ASTM C56, Grade NB, [_____] color[,] [as selected,] [_____] texture, and [_____] pattern.

Clay Non-Load Bearing Screen Tile: ANSI/ASTM C530, Grade [SE,] [ME,] [NE,] Type [STX,] [STA,] [_____] color[,] [as selected,] [_____] texture, and [_____] pattern.

Clay Facing Tile Units: ANSI/ASTM C212, Type [FTX,] [FTS,] [Standard] [Special Duty] Class; [smooth] [rough] surface finish, [single face.] [two faces.]

Clay Tile Units: Nominal modular size of [_____ x _____ x _____] inches ([_____ x _____ x _____] mm). Provide special units for [90] [_____] degree corners, tee intersections, [lintels][,][.] [bond beams][,][.] [bullnosed corners][,][.] [and] [_______________.]

[Special Tile Shape: Shaped to [profile indicated;] [_______________;] surface texture on [_____] sides[.] [and ends.]]

Clay Flue Lining: ANSI/ASTM C315, [rectangular [non-modular] [modular]] [round] [oval] shape, [_____ x _____ x _____] inches ([_____ x _____ x _____] mm) with a wall thickness of [_____] inches ([_____] mm).

REINFORCEMENT AND ANCHORAGE

Multiple Wythe Joint Reinforcement: [Truss] [Ladder] type; [with] [without] moisture drip; [[hot-dip galvanized after fabrication] [unprotected] cold-drawn steel conforming to ANSI/ASTM A82,] [stainless steel conforming to ASTM A580 Type 304,] [3/16] [_____] inch ([4.8] [_____] mm) side rods with [_____] inch ([_____] mm) cross ties; [__________] manufactured by [_______________.]

Reinforcing Steel: [__________] type, specified in Section [03200;] [_____;] [_____] size, [galvanized] [unprotected] finish.

Strap Anchors: [__________] bent steel shape, [_____ x _____] inch ([_____ x _____] mm) size x [_____] inch ([_____] mm) thick, [galvanized to ASTM A123 [G90] [_____]] [unprotected] finish.

Corrugated Formed Sheet Metal Wall Ties: [_____ x _____] inch ([_____ x _____] mm) size x [_____] gage ([_____] mm) thick, [galvanized] [unprotected] steel finish.

Formed Steel Wire Wall Ties: [_____] gage ([_____] mm) thick, [galvanized] [unprotected] steel finish.

Dovetail Anchors: Bent steel strap, [_____ x _____] inch ([_____ x _____] mm) size x [_____] inch ([_____] mm) thick, [galvanized to ASTM A123 [G90] [_____]] [unprotected] finish.

FLASHINGS

Plastic Flashings: Sheet [polyvinyl chloride;] [polyethylene;] [10] [20] [_____] mil ([0.25] [0.5] [_____] mm) thick; [__________] manufactured by [________________.]

****** [OR] ******

Copper/Kraft Paper Flashings: [1] [2] [3] [_____] oz/sq ft ([305] [610] [915] [_____] g/sq m) sheet copper bonded to fiber reinforced asphalt treated Kraft paper; [__________] manufactured by [_______________.]

****** [OR] ******

Plastic/Kraft Paper Flashings: [3] [_____] mil ([0.8] [_____] mm) thick sheet polyethylene bonded to layer of fiber reinforced asphalt and backed with Kraft paper; [__________] manufactured by [_______________.]

****** [OR] ******

Copper: ASTM B370, [cold rolled;] [soft temper;] [20] [24] [_____] oz/sq ft, [0.027] [0.032] [_____] inch ([0.7] [0.8] [_____] mm) thick; natural finish.

****** [OR] ******

Pre-coated Galvanized Steel: ASTM A525, [G90;] [_____;] [_____] gage ([_____] mm) core steel, shop pre-coated with [__________] coating of [__________] color[.] [as selected.]

****** [OR] ******

Galvanized Steel: ASTM A525, [G90] [G140] [_____] finish, [24] [26] [_____] gage ([0.6] [0.5] [_____] mm) core steel.

****** [OR] ******

Stainless Steel: ASTM A167, Grade [_____,] Type 304, softtemper; [_____] inch ([_____] mm) thick; smooth finish.

ACCESSORIES

Preformed Control Joints: [Rubber] [Neoprene] [Polyvinylchloride] [__________] material. Provide with corner and tee accessories, [heat] [cement] fused joints, [__________] manufactured by [_______________.]

Joint Filler: Closed cell [polyvinylchloride;] [polyethylene;] [polyurethane;] [rubber;] [__________;] oversized 50 percent to joint width; self-expanding; [_____] inch ([_____] mm) wide by maximum lengths; [__________] manufactured by [_______________.]

Building Paper: [#15] [#30] asphalt saturated felt.

[Nailing Strips: Softwood, preservative treated for moisture resistance, dovetail shape, sized to masonry joints.]

Weep Holes: [Galvanized steel tubes [wick filled;]] [Cotton wick;] [Preformed plastic tubes;] [__________;] [__________] manufactured by [_______________.]

Cavity Vents: [Molded polyvinylchloride grilles;] [_____________________;] insect proof; [__________] manufactured by [_______________.]

Cleaning Solutions: Non-acidic, not harmful to masonry work or adjacent materials.

LINTELS

Precast Concrete Lintels: [_______________] type, [_____ x _____] inch ([_____ x _____] mm) size, [_____] psi ([_____] MPa) strength at 28 days, [__________] manufactured by [_______________.]

PART 3 EXECUTION

INSTALLERS

[___________________________________________.]

[___________________________________________.]

[___________________________________________.]

EXAMINATION

Verify that field conditions are acceptable and are ready to receive work.

Verify items provided by other sections of work are properly sized and located.

Verify that built-in items are in proper location, and ready for roughing into masonry work.

Beginning of installation means installer accepts existing conditions.

PREPARATION

Direct and coordinate placement of metal anchors supplied to other Sections.

Provide temporary bracing during installation of masonry work. Maintain in place until building structure provides permanent bracing.

COURSING

Establish lines, levels, and coursing indicated.	Protect from displacement.

Maintain masonry courses to uniform dimension. Form vertical and horizontal joints of uniform thickness.

Lay concrete masonry units in [running] [stacked] [_____] bond. Course one unit and one mortar joint to equal [8] [_____] inches ([200] [_____] mm). Form [concave] [raked] [flush] [bevelled] [_____] mortar joints.

Lay brick units in [running] [stacked] [common] [__________] bond. Course three brick units and three mortar joints to equal [8] [_____] inches ([200] [_____] mm). Form [concave] [raked] [flush] [bevelled] [extruded] [__________] mortar joints.

Lay [prefinished] [decorative] [clay tile] [__________] units to coursing of one unit and one mortar joint to equal [8] [_____] inches ([200] [_____] mm). Form [concave] [raked] [flush] [bevelled] [__________] mortar joints.

PLACING AND BONDING

Lay solid masonry units in full bed of mortar, with full head joints, uniformly jointed with other work.

Lay hollow masonry units with face shell bedding on head and bed joints.

Buttering corners of joints or excessive furrowing of mortar joints are not permitted.

Remove excess mortar as Work progresses.

[Interlock] [__________] intersections and external corners.

Do not shift or tap masonry units after mortar has achieved initial set. Where adjustment must be made, remove mortar and replace.

Perform jobsite cutting of masonry units with proper tools to provide straight, clean, unchipped edges. Prevent broken masonry unit corners or edges.

Cut mortar joints flush where [ceramic or quarry wall tile is scheduled][,][.] [cement parging is required][,][.] [resilient base is scheduled][,][.] [cavity insulation vapor barrier adhesive is applied][,][.] [or] [bitumen dampproofing is applied.]

Isolate masonry partitions from vertical structural framing members with a control joint[.] [as indicated.]

Isolate top joint of masonry partitions from horizontal structural framing members and slabs or decks with [compressible joint filler.] [________________________.]

Lay clay tile flue linings vertical, bedded in [concrete block] [clay tile] [___________] units. [Extend above chimney cladding [8] [_____] inches ([200] [____] mm). Trowel mortar smooth over chimney cladding and slope for positive drainage.]

WEEPS AND VENTS

Install weep holes in veneer at [_____] inches ([_____] mm) on center horizontally [above through-wall flashing][,][.] [above shelf angles][,][.] [and] [at bottom of walls.] [_______________.]

Install cavity vents at [top of each cavity space][,][.] [below shelf angles][,][.] [and] [_______________] at same spacing in veneer at [_____] inches ([_____] mm) on center horizontally.

CAVITY WALL

Do not permit mortar to drop or accumulate into cavity air space or to plug weep holes.

Build inner wythe ahead of outer wythe to receive cavity insulation air/vapor barrier adhesive.

REINFORCEMENT AND ANCHORAGES - CAVITY WALL MASONRY

Install horizontal joint reinforcement [16] [_____] inches ([400] [_____] mm) oc.

Place masonry joint reinforcement in first [and second] [__________] horizontal joints above and below openings. Extend minimum [16] [_____] inches ([400] [_____] mm) each side of opening.

Place joint reinforcement continuous in first [and second] joint below top of walls.

Lap joint reinforcement ends minimum [6] [_____] inches ([150] [_____] mm). Extend minimum [16] [_____] inches ([400] [_____] mm) each side of openings.

Embed anchors [embedded in concrete.] [attached to structural steel members.] Embed anchorages in every [second block] [sixth brick] [__________] joint.

Reinforce [stack bonded unit] joint corners and intersections with strap anchors [16] [_____] inches ([400] [_____] mm) oc.

MASONRY FLASHINGS

Extend flashings [under] [over] [through] veneer, turn up minimum [8] [_____] inches ([200] [_____] mm) and [bed into mortar joint of masonry] [seal to concrete] [seal to sheathing over [wood] [steel stud] [framed]] back-up.

Lap end joints minimum [6] [_____] inches ([150] [_____] mm) and seal watertight.

[Use flashing manufacturer's recommended adhesive and sealer.]

LINTELS

Install [loose steel] [precast concrete] lintels over [window openings][,][.] [door openings][,][.] [and] [_______________.]

Install reinforced unit masonry lintels over openings where steel or precast concrete lintels are not scheduled.

Openings Up To [42] [_____] Inches ([1 070] [_____] mm) Wide: Place [two,] [_____,] [No. 3] [No. 4] [_____] ([M9] [M12] [_____]) reinforcing bars [1] [_____] inch ([25] [_____] mm) from bottom web.

Openings From [42] [_____] Inches ([1 070] [_____] mm) Up To [78] [_____] Inches ([1 980] [_____] mm) Wide: Place [two,] [_____,] [No. 5] [_____] ([M16] [_____]) reinforcing bars [1] [_____] inch ([25] [_____] mm) from bottom web.

Openings Over [78] [_____] Inches ([1 980] [_____] mm) Wide: [Reinforce openings as detailed.] [______________.]

Use single piece reinforcing bars only.

Support and secure reinforcing bars from displacement. Maintain position within 1/2 inch (13 mm) of dimensioned position.

Place and consolidate grout fill without displacing reinforcing.

[Allow masonry lintels to attain specified strength before removing temporary supports.]

Maintain minimum [_____] inch ([_____] mm) bearing on each side of opening.

GROUTED COMPONENTS

Reinforce bond beam with [2,] [_____,] [No. [_____]] (M[_____]) bars, [1] [_____] inch ([25] [_____] mm) from bottom web.

Reinforce [pilaster] [__________] with [_____,] [No. [_____]] (M[_____]) bars, placed [_______________________.]

Lap splices minimum [24] [_____] bar diameters.

Support and secure reinforcing bars from displacement. Maintain position within 1/2 inch (13 mm) of dimensioned position.

Place and consolidate grout fill without displacing reinforcing.

At bearing locations, fill masonry cores with grout for a minimum [12] [_____] inches ([300] [_____] mm) either side of opening.

CONTROL [AND EXPANSION] JOINTS

Do not continue horizontal joint reinforcement through control [and expansion] joints.

Form control joint with a sheet building paper bond breaker fitted to one side of the hollow contour end of the block unit. Fill the resultant elliptical core with grout fill. Rake joint at exposed unit faces for placement of backer rod and sealant.

****** [OR] ******

Install preformed control joint device in continuous lengths. Seal butt and corner joints in accordance with manufacturer's instructions.

Size control joint in accordance with Section 07900 for sealant performance.

[Form expansion joint as detailed.]

BUILT-IN WORK

As work progresses, build in [metal door [and glazed] [frames] [fabricated metal frames] [window frames] [wood nailing strips] [fireplace accessories] [anchor bolts] [plates] [__________] and other items furnished by other Sections.

Build in items plumb and level.

Bed anchors of metal door [and glazed] frames in adjacent mortar joints. Fill frame voids solid with grout. [Fill adjacent masonry cores with grout minimum [12] [_____] inches ([300] [_____] mm) from framed openings.]

Do not build in organic materials subject to deterioration.

TOLERANCES

Maximum Variation From Alignment of [Columns:] [Pilasters:] [1/4] [_____] inch ([6] [_____] mm).

Maximum Variation From Unit to Adjacent Unit: [1/32] [_____] inch ([1.5] [_____] mm).

Maximum Variation From Plane of Wall: 1/4 inch in 10 feet (6 mm/3 m) and 1/2 inch in 20 feet (13 mm/6 m) or more.

Maximum Variation From Plumb: 1/4 inch (6 mm) per story

non-cumulative; 1/2 inch (13 mm) in two stories or more.

Maximum Variation From Level Coursing: 1/8 inch in 3 feet (3 mm/m) and 1/4 inch in 10 feet (6 mm/3 m); 1/2 inch in 30 feet (13 mm/9.1 m).

Maximum Variation of Joint Thickness: 1/8 inch in 3 feet (3 mm/m).

Maximum Variation From Cross Sectional Thickness of Walls: [1/4] [_____] inch ([6] [_____] mm).

CUTTING AND FITTING

Cut and fit for [chases][,][.] [pipes][,][.] [conduit][,][.] [sleeves][,][.] [grounds][,][.] [and] [_______________.] Coordinate with other sections of work to provide correct size, shape, and location.

Obtain Architect/Engineer approval prior to cutting or fitting masonry work not indicated or where appearance or strength of masonry work may be impaired.

CLEANING

Clean work under provisions of Section [01700.] [01710.]

Remove excess mortar and mortar smears.

Replace defective mortar. Match adjacent work.

Clean soiled surfaces with cleaning solution.

Use non-metallic tools in cleaning operations.

PROTECTION OF FINISHED WORK

Protect finished installation under provisions of Section [01500.] [01535.]

Without damaging completed work, provide protective boards at exposed external corners which may be damaged by construction activities.

SCHEDULES

Exterior Wall: Cavity wall masonry with an exterior wythe of face brick veneer, bonded with wire ladder reinforcement to inner wythe of concrete block masonry with 2 inch (50 mm) space for insulation.

END OF SECTION