SECTION 03450 / 04720 CAST STONE /PRECAST
Part 1 – GENERAL
SUBMITTAL
Submit physical sample or color chart for custom color.
QUALITY ASSURANCE
Certifications: All selected units shall conform to ASTM 1364. All American Art Stone products conform to ASTM E2432-05 as it pertains to the environmental, economic and social sustainability to buildings.
American Art Stone products offer high thermal mass properties, regional materials and low life-cycle costs. These products are mold and moisture resistant and will last the life of the building. No VOC’s. Ideal for interior and exterior applications.
Field Constructed Mock-ups: Construct a sample panel no less than 4′ x 4′ of each color and size to be used in the project. The panel is to be approved by either the owner or architect of the project. Sample panel material provided at no cost to the project site.
DELIVERY, STORAGE, HANDLING
American Art Stone units shall be delivered to the job site on pallets. Store pallets in single stacks on level ground and cover with waterproof coverings (i.e. tarpaulins) to protect from bad weather. Handle units carefully to avoid breakage and on-site damage.
PROJECT/SITE CONDITIONS
Protection of Work: Cover units after installation with plastic to protect from damage by other trades.
Part 2 – PRODUCTS
PRODUCT NAME
_____(Type) ___________ in
_____(Color) ___________ with
_____(Finish) ___________ manufactured stone units.
SIZES AND SHAPES
Units shall be nominal 00″ x 00″ x 00″
Custom sizes and shapes from Architectural Drawings
MANUFACTURER
American Art Stone, Inc.
551 Valley Brook Avenue
Lyndhurst, NJ 07071
(201) 635-0160 · Fax: (201) 635-0164
CUSTOM CAST STONE UNITS
A) Custom Cast Stone Units: American Art Stone Units
B) Compliance: ASTM C 1364
C) Texture: Smooth (As specified)
D) Test Results:
Compressive Strength – ASTM C 1194
Absorption – ASTM C 1195
Linear Shrinkage – ASTM C 426
Density – ASTM C 140
Freeze – Thaw – ASTM C 666
TOLERANCES
Cross Section Dimensions: Do not deviate by more than plus or minus 1/8 inch from approved dimensions.
Length of Units: Do not deviate by more than length/360 or plus or minus 1/8 inch, whichever is greater, not to exceed plus or minus 1/4 inch.
Warp, Bow or Twist: Do not exceed length/360 or plus or minus 1/8 inch, whichever is greater.
RELATED MATERIALS
Color matching or contrasting mortar is available from the manufacturer. For all exterior mortar, use matching manufacturer-approved water repellent mortar additive, following manufacturer’s instructions.
MASONRY CLEANERS
Do not power wash. Contact manufacturer for recommended appropriate cleaners. Never use Muriatic Acid or any cleaner using acid on units.
Part 3 – EXECUTION
LAYING MASONRY WALLS
Draw stone units from more than one pallet at a time during installation. All exterior mortar shall include matching water repellent additive added to each batch in the appropriate dosage rate for mortar type M, S or N per manufacturer’s instructions.
Lay units using the best concrete masonry practices. Install only quality units; reject all defective units as defined by ASTM C90. Lay units with the faces level, plumb and true to the line strung horizontally and vertically at the finished face. Units shall have uniform 3/8″ wide joints both horizontally and vertically. Tool joints neatly after they are finger-hard to make them straight and uniform. Tuckpoint the joints of units for proper appearance and to prevent water penetration. No Rake Joints. Remove mortar from unit faces before it sets. Size and place cut pieces appropriately to maintain consistency and bond. Complete masonry construction using procedures and workmanship consistent with the best masonry practices.
Lighting: Provide adequate lighting by placing all lighting at a reasonable distance from the wall for even illumination. Do not use trough lighting.
Cutting: Make all unit cuts with motor-driven masonry saws using either an abrasive or diamond blade. Cut neatly and locate for best appearance.