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UNDEmGROUND TANK INSTALLATION Page 5 <br /> Design for Anchorage Against Buoyancy De� Guide <br /> STEP 11 -Determine the Number of Anchor Straps <br /> Divide the Total Anchorage Load by the Allowable Load per Anchor Strap to determine the <br /> minimum number of anchor straps required. The Allowable Load per Anchor Strap must <br /> be provided by the anchor strap manufacturer. Round the minimum number of anchor <br /> straps up to the nearest whole number. <br /> Allowable Load <br /> ® per Anchor Strap = lbs <br /> S fit l0�' lbs. Total Anchorage Load (39) *GP <br /> + �j( ?CCIbslstrap Allowable Load (50) <br /> Q minimum number of anchor straps <br /> ` Number of Anchor Straps Used <br /> STEP 12 -Determine the Anchor Strap Locations <br /> Anchor straps must be located to avoid any tanktop hardware, piping, sumps, manholes, <br /> and risers. The desired spacing is the tank length divided by the number of straps. If an <br /> odd number of straps are used, one strap should be located on the tank centerline or within <br /> 17'of the tank centerline if there is an obstruction at the centerline. If the center strap <br /> cannot be located within these criteria then increase the number of straps by one. <br /> Even number of straps used? g Yes ❑ No <br /> If yes then enter the number of straps in 53 below and calculate the strap spacing. <br /> If no then answer the following question. <br /> Can the center strap be located within 17'of the tank centerline? ❑ Yes ❑ No <br /> If yes then enter the number of straps used in 53 below. <br /> If no, then increase the number of straps used in(52)by one and enter this number in (53)below. <br /> L <br /> © NUMBER OF ANCHOR STRAPS USED <br /> 0Z ft. Tank Length, (5) <br /> Number of Anchor Straps, (53) <br /> ft. ANCHOR STRAP SPACING <br /> IJ <br /> NOTE: Anchor straps may be moved f 5% from this spacing to avoid tanktop obstructions. <br /> STEP 13 -Obtain Deadman Anchor Design from a Qualified Professional <br /> From a qualified design professional obtain a design of the deadman anchors, anchor attachment hardware, and <br /> embedded hardware including the size, style, and material specifications of each component The design must also <br /> include specifications for corrosion protection of the entire system assembly including the straps, attachment hardware, <br /> and embedded hardware. Also, the qualified design professional should provide a drawing showing the size, shape, <br /> reinforcement, and location of the deadman anchors and the details of installation of the entire anchor system. <br /> o insure consistency in the design, provide the qualified design professional with a copy of Form A describing the details <br /> of the installation including the tank dimensions, Burial Depth, Design Groundwater Depth,the Design Uplift Force, <br /> Holddown Provided by Installation, Total Anchorage Load, Anchor Strap Specifications, Allowable Load per Anchor Strap, <br /> Number of Straps Used, Anchor Strap Spacing, and a drawing showing any obstructions on the tanktop. <br />