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Deadman Anchors deadmanislull TqMitofoverburdenontopof A8. InstaWn Procedure—Dry Hole on side th an and tank provides on sato side the anchoring force.Ladeadman Bed along each side and parallel to Provide a minimum of 12"level approved backfill bed(see Section A2) tank.The tank must not'over. over hole bottom or concrete slab.Set tanks on bed. triple shadow'the deadman anchor. DO NOT PLACE TAN KS DIRECTLY ON CO NCR ETE SLA B,TI M BERS, cable Clamp wire rope with at least three clamps clamps around deadman and BEAMS OR CRADLES. through end of strap. DO NOT MIX APPROVED GRAVEL WITH SAND OR NATIVE SOIL. Alwa use approved gravel.Do not backfill in layers using sand or native ri se native soil ys hole size,all excavated o 00 iI.R ardless of the nes m e ( ) 9 "`)�� —••-' > •• -��' must be replaced with approved backfill material. %cente7t8 ieb2f8 tri cross section':..y. Backfilling (AII tank models) Deadmen are made with rein- CAUTION:TANKS INSTALLED WITH BACKFILL TO TOP OF TANK, #6Ispnedforced(2-86rebars)concrete.The BUTWITHOUT BACKFILLTO GRADE SHOULD BE COMPLETELY cross section dimensions may FILLED WITH WATER OR PRODUCT AS BALLAST..DO NOT PLACE smo .� vary depending on burial depth. WATER OR PRODUCT IN TANK UNTIL BACKFILL IS EVEN WITH TANK reba3• (contact the Fiberg/as Tank TOP. centInstallation Manager for details).If minimum burial depth is 24"(44" for 12'diameter tanks),minimum deadman size is as follows: long-handledTank Min. probe long-handletl heig ,ebai Probewidth Diameter Height Width' First 12"lift of 0 12" x 12" First backfill 1 , 10' 12" x 18" 12' lift of 12' 8" x 36" backfllf 'A round cross section can be substituted if the diameter equals or exceeds I the deadman width. When using deadman anchors in multiple tank installations each tank will require two deadmen.if one deadman is used for adjacent tanks it must be doubled in width.A separate anchor point must be provided for each '`, t2^ bed `'`t2 °°d strap.Rebar anchor points are incorporated with their legs anchored - • under the re-bar reinforcement.Spacing for anchor points is determined 'It's critical that this area offer full support undertankand end caps. by the number of anchor points shown on tank drawings. An anchor point can be fabricated from rebar asfollows: Min.Rebar Use same materials as bedding. Tank Diameter Rebar Size It strap/anchor point) Width long-handled Place first 12"lift evenly around probe tanks.From the bank or adjacent 4',6' N6 41/2" tank top,backfill must be pushed 8' #8 8" completely beneath tank bottom, 10'.12' #10 12'/2" between ribs and under endcaps Turnbuckles(optional) Second to provide necessary support.A Hook,Jaw oreye-type turnbuckles(drop-forged)ma be used in lace of 12" lift of long handled probe can be used Y P all oraportion of the cavbackfill to penetrate backfill and push ite rope described in this section. , between all ribs and at 3 to 5 points All Anchoring Methods under endcaps.Place another 12" Minimum per anchor location. - lift of backfill evenly around tanks. Tank Diameter 4',6' 8',10',12' - Repeat the probing of backfill from t2^ bed"`' the bank or adjacent tank top. Drop-forged Turnbuckle Diameter. kmiiii " HookType 1/s" 1'/a" 'It's critical that this area offer full support under tank and end caps. Jaw Type '/z" a/^ completion of second lift,After cont Eye Type 1/'11 3/a" P Wire Rope Diameter: long handled probe backfill can be brought to top of 6x19 '/z" tanks or grade without additional (improved plow steel) handwork.(Compaction maybe required for slab support.) Do not use wire eyebolts or bent steel eyebolts. CAUTION:TANKS INSTALLED WITH BACKFILL TO TOP OF TANK, This method will not work in tight BUT WITHOUT BACKFILL TO GRADE SHOU LD BE COM PLETELY areas in straight-walled holes.The FILLED WITH WATER OR PRODUCT AS BALLAST.DO NOT PLACE a'curved angle necessary to probe the back- WATER OR PRODUCT IN TANK UNTIL BACKFILL IS EVEN WITH probed section fill under the tank can not be made TANK TOP. with the long-handled probe. Straight-walled holes in tight areas Fiberglas tanks can also be anchored safely by using burial depth and a - will require a curved probe to surface slab to offset the buoyancy factors.For alternate anchoring backfill under the tanks. methods,contact the O/C TANKS Installation Manager. "" ' The curved probe is a 4'section of the long handled aluminum probe Optional Top Cable Clamp Method bent on a radius to match the tank curvature.A leveraging action on the The optional top cable clamp long-handled probe creates a pushing action under the tank bottom. guidesmethod may be used to secure The following procedure is the most effective for the curved probe: hold cables anchor straps at the top of the tank. a.Atter setting the tank on thegravel bed,probe the entire tank bottom Clamp cable to strap using atleast and aroundtheend caps. 3 clamps.Thread cablearound deadman(or through anchor b.Place the first l2"lift of backfill. points)and bring to top of tank. c.Probe the entire tank bottom and end caps again. Position wire rope in cable guides d.Place the second 12"lift of backfill. tokeepwireropeonthestrap. e.Switch to straight probe section and probe tank again. Repeat procedure on the other WARNING:ENTERING THE TANK EXCAVATION IS DANGEROUS: end of strap and clamp cables COLLAPSING EXCAVATION WALLS CAN CAUSE INJURY OR together at top of tank using come- DEATH. along to snug wire rope;then triple clamp. 5