INSTALL_2000 - Laserfiche WebLink

Home Browse Search

UNDEkvROUND TANK INSTALLATION Page 5 Design for Anchorage Against Buoyancy Z ign STEP 11 -Determine the Number of Anchor Straps Divide the Total Anchorage Load by the Allowable Load per Anchor Strap to determine the minimum number of anchor straps required. The Allowable Load per Anchor Strap must be provided by the anchor strap manufacturer. Round the minimum number of anchor straps up to the nearest whole number. Allowable Load ® per Anchor Strap . 3j, ZOO lbs 4 lbs. Total Anchorage Load (39) `°Q� pc1`""1 + -ZOO lbs/strap Allowable Load (50) ®i 1 ? minimum number of anchor straps Number of Anchor Straps Used STEP 12 -Determine the Anchor Strap Locations Anchor straps must be located to avoid any tanktop hardware, piping, sumps, manholes, and risers. The desired spacing is the tank length divided by the number of straps. If an odd number of straps are used, one strap should be located on the tank centerline or within 17'of the tank centerline if there is an obstruction at the centerline. If the center strap cannot be located within these criteria then increase the number of straps by one. Even number of straps used? 0 Yes ❑ No If yes then enter the number of straps in 53 below and calculate the strap spacing. If no then answer the following question. Can the center strap be located within 17'of the tank centerline? ❑ Yes ❑ No If yes then enter the number of straps used in 53 below. If no, then increase the number of straps used in(52)by one and enter this number in(53)below. © Z NUMBER OF ANCHOR STRAPS USED ft. Tank Length, (5) + Number of Anchor Straps, (53) ® eft. ANCHOR STRAP SPACING NOTE.' Anchor straps may be moved t 5% from this spacing to avoid tanktop obstructions. STEP 13 -Obtain Deadman Anchor Design from a Qualified Professional From a qualified design professional obtain a design of the deadman anchors, anchor attachment hardware, and embedded hardware including the size, style, and material specifications of each component The design must also include specifications for corrosion protection of the entire system assembly including the straps, attachment hardware, and embedded hardware. Also, the qualified design professional should provide a drawing showing the size, shape, reinforcement, and location of the deadman anchors and the details of installation of the entire anchor system. o insure consistency in the design, provide the qualified design professional with a copy of Form A describing the details of the installation including the tank dimensions, Burial Depth, Design Groundwater Depth, the Design Uplift Force, Holddown Provided by Installation, Total Anchorage Load, Anchor Strap Specifications,Allowable Load per Anchor Strap, Number of Straps Used, Anchor Strap Spacing, and a drawing showing any obstructions on the tanktop.