INSTALL 2018 - Laserfiche WebLink

Home Browse Search

1.3.5.2.SPACING IN STABLE IN-SITU (NATIVE) 1.3.5.2.3.If two or more tanks are installed inthesameholeand SOIL CON DITI ONS deadmen are used,the space between the tanks must be equal to or 1.3.5.2.LTheminimumspacingbetween the sidewallorendcap greater than two times the width ofthedeadman ordeadmen required of the tank and the side of the excavation must be 18 inches[46 cm]. between the tanks.See Figure 1-2. See Figure 1-3. The space between tanks using our deadmen is typically 36 inches [91 cm]for 10-foot-and 12-foot-diameter tanks,and 24 inches[60 cm] NOTE:All measurements from the tank sidewalls are to be taken for tanks smaller than 10 feet in diameter. from the outside diameter of the tank ribs. 1.3.5.3.SPACING IN UNSTABLE IN-SITU (NATIVE) 1.3.5.2.2.If two or more tanksare installed in thesame hole,allow SOIL CONDITIONS for at least 18 inches[46 cm]between the tanks.In Canada,the National 1,3.5.3.1.We recommend that the tank owner seek the advice of Fire Code of Canada requires 24 inches[60 cm]between a fuel tank and a local foundation professional engineer if the in-situ soil is softor another tank or structure.See Figure 1-3. inherently unstable(for example,peat,quick-sand,muck,landfill,soft or highly expansive clay,underground stream,etc.),as further described in point 1.3.5.3.2. IIIII 1.3.5.3.2.The excavation must allow a minimum space equal to 112 the diameter of the tank between the excavation wall and both the side and the endcap of the tank to enhance lateral resistance(see Figure 1-3), IIIII if one of the following criteria is met: • the soil is cohesive soil that is less than 750 lbs./sq.ft. IIIII [35.9 kPa]as calculated from an unconfined compression 18° 18" 18" test OR IIII[60 [60 [60 • the soil has an ultimate bearing capacity of less than cm] cm] cm] 3,500lbs.lsq.ft.[167.6 kPa] 1.3.5.3.3.Stabilizing materials,such as a reinforced concrete IIII slab,maybe required under the tank as a foundation in addition V18' ] 18"[60 cm] to the required 12-inch[30-cm]bedding in an excavation where _ the bottom is unstable. IIIII IIIII=IIIII=IIIII-IIIII-IIIII-IIIII IIIII-IIIII (IIII IIIII-11 HillStableSoil III II -IIIII-IIII-IIIII=11111 1.3.5.3.4.The spacing between adjacent tanks is to beat least III IIIIIII-IIIII-IIIII=11111-IIIII=IIIII—IIIII=IIIII=IIIII 11111 11 18 inches[46 cm].In Canada,the National Fire Cade of Canada requires 24 inches[60 cm]between a fuel tank and another tank or structure.See Figure 1-3. 1.3.5.3.5.If deadmen are used,follow the spacing requirements between the tanks given in points 1.3.5.2.2 IIIII and 1.3.5.2.3. 1.3.6.ADDING TANKS AT EXISTING LOCATIONS 1.3.6.1.GENERAL MIR Yz Tank 18. 1.3.6.1.1.Additional tanks may be installed at existing locations IIIII Diameter gym] ifproper foundation supportexists. IIIII 1.3.6.1.2.Backfill support around the existing tanks must not be disturbed. IIII 1.3.6.1.3.It is the responsibility of the tank ownerto choose (IIII '/z Tank yDiameer the method of installation. Diameter 1.3.6.1.4.We recommend that one of the following methods IIIII III- be used. IIIII=III =111= II =IIIII IIIII-IIIII IIIII=IIIII—IIII-1 I - Unstable Soil 11111 11 M1111 Hill 11111-11111 11 08 1. PLANNiNG rOR INSTALLATION