SECTION 04450

CUT STONE VENEER

PART 1 GENERAL

WORK INCLUDED

Cut [marble] [granite] [limestone] [__________] veneer at [exterior] [interior] wall.

Metal anchors [, mortar, and joint pointing.]

[Joint sealant.]

WORK INSTALLED BUT FURNISHED UNDER OTHER SECTIONS

Section 05500 - Metal Fabrications: Metal fabricated items for building into the work.

[Section 07620 - Sheet Metal Flashing and Trim: Sheet metal coping and sill flashings.]

WORK FURNISHED BUT INSTALLED UNDER OTHER SECTIONS

Furnish wall anchors and devices to Section [_____] for placement.

RELATED WORK

Section [_____-__________]: Concrete supporting wall.

[Section 04100 - Mortar: Bedding and pointing mortar].

Section [_____-__________]: Masonry supporting wall.

Section [05100 - Structural Steel] [_____-__________]: Attachment anchorage from structural steel framing members.

Section 05500 - Metal Fabrications: Shelf [angles] [_____] and supports.

Section [_____-__________]: [Formed steel] [Wood] framed supporting wall.

Section [_____-__________]: Water repellant coating.

Section 07620 - Sheet Metal Flashing and Trim: Coping and sill flashings.

Section 07900 - Joint Sealers: Sealant for [perimeter] [control] [expansion] joints.

REFERENCES

[ANSI/ASTM C387 - Packaged, Dry, Combined Materials for Mortar and Concrete.]

ASTM A36 - Structural Steel.

ASTM A123 - Zinc (Hot Galvanized) Coatings on Products Fabricated from Rolled, Pressed, and Forged Steel Shapes.

[ASTM C270 - Mortar for Unit Masonry.]

ASTM C503 - Marble Building Stone (Exterior).

ASTM C615 - Granite Building Stone.

ASTM C616 - Sandstone Building Stone.

ASTM C629 - Slate Building Stone.

MOCKUP

Provide mockup under provisions of Section [01400.] [01405.]

Size: [___x___] feet ([___x___] m).

Include cut stone, structural supporting wall, anchors, [control joint condition,] [window and accessories,] and [__________.]

QUALITY ASSURANCE

Stone Supplier: Company specializing in quarrying cut stone with [ten] [_____] years experience.

Installer: Company specializing in installing cut stone [with [_____] years [documented] experience.] [approved by manufacturer.]

Design anchors and supports under direct supervision of experienced Professional Engineer, registered in State of [____________________.]

SUBMITTALS

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

Indicate on shop drawings, layout, pertinent dimensions, anchorages, [reinforcement,] head, jamb, and sill opening details, and [control] [expansion] jointing methods.

Provide product data on stone units, mortar products, [sealants,] reinforcements, and [__________.]

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

Submit [two] [_____] samples [___x___] inch ([___x___] mm) in size illustrating minimum and maximum sizes, color range and texture, markings, surface finish, and [__________.]

Submit manufacturer's installation instructions and field erection or setting drawings under provisions of Section [01300.] [01340.]

[Indicate on setting drawings, panel identifying marks and locations.]

DELIVERY, STORAGE, AND HANDLING

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

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

Store stone panels [vertically resting weight on panel edge.] [__________.]

Protect stone from visible discoloration.

ENVIRONMENTAL REQUIREMENTS

Maintain materials and surrounding air to a minimum 40 degrees F (5 degrees C) prior to, during, and 48 hours after completion of work.

During temporary storage on site, at the end of working day, or during rainy weather, cover stone work exposed to weather with non-staining waterproof coverings, securely anchored.

PART 2 PRODUCTS

ACCEPTABLE STONE SUPPLIERS

[________________________________________.]

[________________________________________.]

[________________________________________.]

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

STONE

Limestone: [Cut Indiana Oolitic Limestone.] [__________.]

Marble: ASTM C503, Classification [I - Calcite;] [II -Dolomite;] [III - Serpentine;] [IV - Travertine;] [with [filled] [unfilled] surface.]

Granite: ASTM C615, [sawed.] [cut.] [split.] [_____.]

Slate: ASTM C629, Classification [I - Exterior;] [II -Interior;] [sawed.] [cut.] [split.] [__________.]

Sandstone: ASTM C616, Classification [I - Sandstone.] [II - Quartzitic Sandstone.] [II - Quartzite.]

Color: [__________].

Surface Finish: [_______________.]

Grade: [_______________;] free of defects.

Thickness: [_____] inch ([_____] mm) nominal.

Face Size: [___x___] inch ([___x___] mm) nominal.

MORTAR

Mortar: As specified in Section 04100.

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

Mortar: ASTM C270 Type [M] [S] [N] [O] using [proportion] [property] specifications; with Type [I] [___] Portland cement of [grey] [white] color [,with Type [S] [SA] hydrated lime.]

Water: Clean and potable.

Admixtures: [__________.]

Pointing Mortar Color: [Mineral oxide pigment] [__________] of [__________] color; [__________] manufactured by [__________.]

ACCESSORIES

Anchors, Dowels, Ties, Cramps, and [__________]: [Stainless steel, Type 304;] [Steel, ASTM A36, galvanized after fabrication to ASTM A123 [1.25] [_____] oz/sq ft ([380] [_____] g/sq m);] of sizes and configurations required for support of stone and applicable superimposed loads.

Supports: [Stainless steel, Type 304.] [Steel, ASTM A36, galvanized after fabrication to ASTM A123, [1.25] [_____] oz/sq ft ([380] [_____] g/sq m).]

Bolts, Washers, and Nuts: [Galvanized steel.] [Stainless steel, Type 304.] [__________.]

[Flashings: [[_____] type.] [Furnished under Section 07620.]]

Lifting Hooks: Removable type [for panels in excess of

[75] [_____] lbs ([34] [_____] kg).]

Setting Buttons: [Lead.] [Plastic.]

Cavity Vents: [_____] type; [_____] size; [__________] manufactured by [__________.]

Sealant: [[__________] Type specified in Section 07900, not detrimental to stone work.] [[__________] Type manufactured by [____________________].]

Back Coating: [Bituminous.] [_______________.]

Cleaning Solution: Type which will not harm stone, joint materials, or adjacent surfaces. Consult stone supplier for recommended type.

MORTAR MIX

Provide Type [_____] setting mortar and Type [_____] pointing mortar.

Thoroughly mix mortar ingredients in quantities needed for immediate use.

Add [mortar color] [and] [admixtures] in accordance with manufacturer's instructions. Ensure uniformity of mix and coloration.

Do not use anti-freeze compounds in mortar.

Use mortar within two hours after mixing.

If necessary, retemper mortar within two hours of mixing to replace water lost by evaporation.

STONE FABRICATION

Form external corners to [quirk] [square] [_____] joint profile.

Slope exposed top surfaces of stone and horizontal sill surfaces for natural wash.

Cut drip slot in work projecting more than 1/2 inch (13 mm) over [window frames] [__________.] Size slot not less than 3/8 inch (10 mm) wide and 1/4 inch (6 mm) deep for full width of projection.

Coat [back] [cavity] surface of stone with [bituminous] [__________] back coating to surfaces not in contact with mortar. Allow coating to cure.

PART 3 EXECUTION

INSPECTION

Verify that support work and site conditions are ready to receive work of this Section.

Establish lines, levels, and coursing. Protect from disturbance.

Beginning of installation means acceptance of [existing conditions] [and] [support work.]

PREPARATION

Supply sufficient quantity of anchorages to Section [_____] for placement.

Verify that items built-in under other Sections are properly located and sized.

Clean stone prior to erection. Do not use wire brushes or implements which will mark or damage exposed surfaces.

INSTALLATION

[Erect stone in accordance with stone supplier's instructions and erection drawings.]

Arrange stone pattern to provide a consistent joint width of [1/4] [_____] inch ([6] [_____] mm) throughout.

[Provide setting bed [and pointing] mortar in accordance with Section 04100.]

Place setting buttons and set stone in full mortar setting bed to support stone over full bearing surface and to establish joint dimensions.

Shore up units [until setting bed will maintain panel in position without movement.] [for [7] [_____] days after setting.]

Fill dowel [, Lewis,] and lifting holes with mortar.

To accommodate pointing mortar, rake out joints 5/8 to 3/4 inch (16 to 19 mm). Brush mortar joints clean.

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

Rake out joints [_____] inch ([_____] mm) to accommodate sealant and [backing rod.] [bond breaker.] Brush mortar joints clean.

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

Install sealant and [backing rod] [bond breaker] at joints.

[Fill joints with pointing mortar. Pack and work into voids. Neatly tool surface to [concave] [raked] [_____] joint.]

Install flashings of longest practical length and seal watertight to back-up. Lap end joint minimum [6] [_____] inches ([150] [_____] mm) and seal watertight.

Install cavity vents in vertical joints immediately above horizontal flashings and supports and at top of cavity spaces to provide cavity space venting.

TOLERANCES

Positioning of Elements: Maximum 1/4 inch (6 mm) from true position.

Maximum Variation from Plane of Wall: 1/4 inch in 10 feet (6 mm in 3 m); 1/2 inch in 50 feet (13 mm in 15 m).

Maximum Variation Between Face Plane of Adjacent Panels: [1/16] [_____] inch ([1.5] [_____] mm).

Maximum Variation from Plumb: 1/4 inch (6 mm) per story non-cumulative; 1/2 inch (13 mm) in any two stories.

Maximum Variation from Level Coursing: 1/8 inch in 3 feet (3 mm/m); 1/4 inch in 10 feet (6 mm in 3 m); 1/2 inch (13 mm) maximum.

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

CUTTING AND FITTING

Obtain approval prior to cutting or fitting any item not so indicated on Drawings.

Do not impair appearance or strength of stone work by cutting.

CLEANING

Remove excess mortar [and sealant] upon completion of work.

Clean soiled surfaces with cleaning solution.

Use non-metallic tools in cleaning operations.

SCHEDULE

END OF SECTION