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+ • • • • a • • • • . • • • H <br /> Figure H-8 When embedding anchor points at the time the pad is <br /> fabricated,the following design will meet the minimum <br /> required anchor points(see Figure H-9). <br /> FRP Tank <br /> Figure H-9 <br /> Strap j Smooth <br /> Deadman or Anchor Pad Radius <br /> AnchorPoi t Turnbuckle <br /> Min. <br /> #6 Rebar <br /> Tank Shadow H A <br /> 4"Min. <br /> 16"Max. <br /> 10-5/8" a n 145/8" e <br /> Deadman Deadman + <br /> (18"x8") (12"x1 T) e <br /> 9" 6" <br /> • e <br /> a <br /> Tank Diameter "Dimension"H" <br /> Minimum Rebar" <br /> 4' 16" Tank Rebar Loop Size Span <br /> Diameter i (1 strap/anchor point) <br /> 6' 27" <br /> 8' 36" <br /> 4' #6 7%2" <br /> — <br /> 10' 42 6' #8 10'/z' <br /> 12' 50" 8' #8 10%, <br /> Hook point on anchor strap to bottom of deadman.The bottom of 10' #10•" 13'/2" <br /> the deadman should be even with the bottom of the tank. 12' #10'" 131/2' <br /> Note:Wider or narrower span will reduce the strength of the anchor <br /> • CSI deadmen are supplied with%"diameter, points below the required value. <br /> galvanized, adjustable anchor points. -^ °/;"tumbuddes require a wire rope loop or shackle between <br /> • Move anchor points to match the hold-down strap turnbuckle and rebar anchor point because#10 rebar will not fit into <br /> locations on the tank ►4 t1"with CSI split straps, 3/4"eye turnbuckle. <br /> this must be done before placing deadmen in the <br /> hole. SPLIT STRAP ANCHORING SYSTEM <br /> • Place multiple deadmen, in contact, end to end. The CSI split strap anchor system is designed for use <br /> • Use one anchor point per strap end. in installations when personnel may not enter the hole. <br /> This system includes a two part strap and take-up <br /> CONCRETE ANCHOR PAD assembly at the tank top that may be used in <br /> The weight of the overburden acting on the concrete conjunction with CSI deadmen. <br /> anchor pad and the tank provides the anchoring force When using the split strap anchoring system,the <br /> (not the weight of the concrete anchor pad). placement of components is critical (see Figure H-10). <br /> For detailed instructions on using the split strap anchor <br /> • As a minimum,to counteract buoyancy, the anchor system refer to Supplemental Documents(Section R). <br /> pad for stable excavations must be at least 8"thick, <br /> with#6 rebar on 12"centers each way, constructed Figure H-10 <br /> per current ACI code. <br /> Take-Up <br /> • For stable conditions the pad must extend a minimum Assembly <br /> of 18" beyond the tank shadow.The pad must also <br /> be at least the same length as the tank. <br /> • For unstable excavations, it is the responsibility of <br /> the tank owner or tank owner's representative to <br /> design the bottom pad thickness and reinforcement. <br /> Regardless of design,the anchor pad should extend <br /> to the excavation walls. Strap Strap <br /> • Poor soil conditions, local codes, seismic activity,etc. CSI <br /> may require increased reinforcement and anchor pad �� Deadmen <br /> thickness. Contact a soils consultant for specifications. <br /> Embedded anchor points should be designed for the <br /> working loads in Table H-2. <br /> /\\ <br /> 78 <br />