COMPLIANCE INFO_1998-2006 - Laserfiche WebLink

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1. EXCAVATION SIZE: * WARNING: DETERMINE THE LOCATION OF OVEREFEAD AND UNDERGROUND UTILITIES BEFORE EXCAVATING. * THE EXCAVATION SHOULD PROVIDE ADEQUATE SPACE FOR THE TANKS, PIPING, AND ASSOCIATED EQUIPMENT, AND FOR THE PLACEMENT AND. COMPACTION OF BACKFILL MATERIALS, PARTICULARLY UNDER THE CIRCUMFERENCE OF THE TANK SHELL AND ENDS. THE SLOPE OF EXCAVATION WALLS IS DETERMINED BY SOIL CONDITIONS, DEPTH OF THE EXCAVATION AND, IF WORKERS ARE REQUIRED TO ENTER THE EXCAVATION, SAFETY CONSIDERATIONS. * SIZES STATED ARE MINIMUMS REQUIRED FOR PROPER TANK INSTALLATION. LOCAL, STATE, AND FEDERAL REGULATIONS MAY REQUIRE LARGER EXCAVATION. * EXCAVATION FOR UNDERGROUND TANKS SHOULD BE MADE WITH DUE CARE TO AVOID UNDERMINING FOUNDATIONS OF EXISTING STRUCTURES. DISTANCE BETWEEN TANKS AND STRUCTURES MUST ASSURE THAT DOWNWARD FORCES FROM LOADS CARRIED BY THE FOUNDATIONS AND SUPPORTS CANNOT BE TRANSMITTED TO THE TANKS. * THE EXCAVATION SIZE SHALL EXTEND A MINIMUM DISTANCE OF 12" AROUND THE PERIMETER OF THE TANK. * EXCAVATIONS WHERE TWO OR MORE TANKS WILL BE INSTALLED REQUIRE A MINIMUM OF 12" BETWEEN TANKS. * THE EXCAVATION DEPTH SHALL BE SUFFICIENT FOR BEDDING AND COVER AS DETERMINED BY N.F.P.A. 30 AND 31, LOCAL, STATE, AND -FEDERAL CODES AND THE OWNER'S ENGINEER. * FOR BURIAL DEPTHS EXCEEDING V-0, CONSULT WITH A TRUSCO REPRESENTATIVE PRIOR TO INSTALLATION. * THE TOTAL DEPTH OF THE TANK EXCAVATION IS DETERMINED BY THE TANK DIAMETER, BEDDING THICKNESS, HOLD DOWN PAD (IF REQUIRED), DEPTH OF COVER, AND SLOPE OF PIPING. MUCH OF THE TANK'S SUPPORT IS DERIVED FROM COMPACTED BACKFILL MATERIAL, WHICH PERMITS THE DOWNWARD FORCES PRESENT TO BE DISSIPATED UNIFORMLY OVER A LARGE AREA. 2. EXCAVATION PREPARATION: * THE EXCAVATION SHALL BE FREE FROM ROCKS OR DEBRIS LARGER THAN THE APPROVED BEDDING OR BACKFILL MATERIALS. DAMAGE TO THE F.R.P. SECONDARY CONTAINMENT FROM MATERIALS SUCH AS ROCKS OR DEBRIS WILL VOID THE WARRANTY. 2 rev. 7/13/90