SCOPE:
CALIFORNIA DRY-DECK PEDESTAL BALLASTONE PAVERS AS MANUFACTURED BY STEPSTONE, INC. IN SIZES AS SPECIFIED ON ARCHITECTURAL DRAWINGS IN ACCORDANCE WITH STEPSTONE,INC. STANDARD DIMENSIONS. ALL DRY-DECK PAVERS TO HAVE INTEGRAL PEDESTALS EMBEDDED INTO THE FOUR CORNERS OF THE PAVER TO ELEVATE IT FROM THE ROOF SURFACE.

A. SPECIFICATIONS FOR CONCRETE AGGREGATES SHALL CONFORM TO ASTM C-33

B. SPECIFICATIONS FOR PORTLAND CEMENT SHALL CONFORM TO ASTM C-150

CONCRETE STRENGTH:
THE AVERAGE CONCRETE TEST STRENGTH SHALL NOT BE LESS THAN 4,000 P.S.I. @ 28 DAYS WITH NO INDIVIDUAL UNIT TO BE LESS THAN 3,600 P.S.I.

ABSORPTION:
THE AVERAGE ABSORPTION OF THE TEST SAMPLES SHALL NOT BE GREATER THAN 7% WITH NO INDIVIDUAL UNIT GREATER THAN 5%.

PERMISSIBLE VARIATIONS IN DIMENSIONS:
LENGTH OR WIDTH OF UNITS SHALL NOT DIFFER BY MORE THAN +/- 3/16 IN. FROM APPROVED SAMPLES. HEIGHTS OF UNITS SHALL NOT DIFFER BY MORE THAN +/- 3/16 IN. FROM THE STANDARD DIMENSION. SIDES DRAFTED APPROX. 1-1/2 DEGREES.

VISUAL INSPECTION:
ALL UNITS SHALL BE SOUND AND FREE OF DEFECTS THAT WOULD INTERFERE WITH THE PROPER PLACING OF THE UNIT OR IMPAIR THE STRENGTH OR PERMANENCE OF THE CONSTRUCTION. MINOR CHIPPING INCIDENTAL TO THE USUAL METHODS OF MANUFACTURE AND FROM THE CUSTOMARY METHODS OF HANDLING IN SHIPMENT AND DELIVERY, SHALL NOT BE DEEMED GROUNDS FOR REJECTION. COLORS AND TEXTURE MAY VARY SLIGHTLY DUE TO THE NATURAL MATERIALS USED IN THE MANUFACTURE OF THE PAVERS.

SAMPLING:
STEPSTONE, INC. WILL SUPPLY SAMPLES OF THE PAVING UNITS TO BE SET UP BY THE CUSTOMER FOR APPROVAL PRIOR TO THE START OF PRODUCTION. THE REASON FOR THIS IS TO DEMONSTRATE THE SLIGHT VARIATIONS IN COLOR AND TEXTURE OF THE NATURAL MATERIAL.

INSTALLATION:
BALLASTONE DRY-DECK PEDESTAL PAVERS TO BE LOOSE LAID ON THE ROOF. SIDES TO BE PARALLEL, COURSES TO BE STRAIGHT. SPACES BETWEEN THE PAVERS TO BE NOT MORE THAN 1/4". BALLASTONE DRY-DECK PAVERS TO BE LAID WITH EVEN BEARING AND SUPPORTED FULLY. THE ROOF SURFACE SHALL BE NON- COMPRESSIBLE AND DESIGNED TO CARRY THE LOADS THAT THE BALLAST PAVERS WILL APPLY WHEN FULLY LOADED AS PER DESIGN.