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lniU_Ur "'or 11M-SeriesTank
<br /> MARCH 2015
<br /> l
<br /> Buoyancy �'
<br /> Controll u6.;ance 1 r N F LTRATO R-
<br /> Tanks
<br /> Before you Begin Concrete Deadmen Anchors
<br /> This document presents recommended buoyancy control methods for Recommended concrete deadmen anchors include filled plastic half pipe,
<br /> Infiltrator Systems Inc.'s(Infiltrator's)IM-Series tanks.Tank buoyancy precast parking bumpers and traffic barriers,and poured blocks.The
<br /> control methods must be implemented according to state and/or local weight of the deadmen anchors combined with the weight of soil above
<br /> regulations,which may supersede the guidelines in this document. them provides buoyancy control when properly secured.Deadmen anchors
<br /> If unsure of the requirements for a particular site,contact the local are placed at the bottom of the tank excavation on opposite sides of the
<br /> tank.The deadmen anchors are fastened to each other with tie-down
<br /> health department or permitting authority. straps placed up and over the tank at the locations specified for each tank
<br /> model(see Figure 5).
<br /> This document provides procedures to determine if tank buoyancy control
<br /> is required based on site conditions.Please obtain the following information 15 in[315 mmj to
<br /> to determine if control is necessary and what methods are applicable: 18 in • 0 mm] Concrete-filled plastic half pipe
<br /> • Infiltrator tank model = Use Sch-.ule 40 PV' pl. tic pipe h.•• g a
<br /> Iminim in.ide dig, eter. 15 inc - (-'5 mm)
<br /> • Maximum height of water outside the tank and above the tank bottom i •f or HD•Eco ugat-• pipe .ving . minim m
<br /> elevation — insid- diame er of 8 inche (450 m)can in half
<br /> • Depth of soil cover over the tank to Ti. j . ; ; len• hwise. -II w h concre- hay ng a mi imum
<br /> Once tank buoyancy control measures are determined to be required and uni weight o 1 ' lbs/ft'(2. m tric ton-m3)
<br /> a method has been selected and implemented,refer to Infiltrator IM-Series f rret forced wi t ree equally sp-c d rs 40 g:de,
<br /> Tank Installation Instructions and Riser Connection Guidance documents, lb-11 -inch(13 jr diameter st el .ars.Weig t i .1
<br /> Ib.1ft(91 kg/m)minimum.
<br /> as applicable,for completing the installation.
<br /> St. Rebar
<br /> How to Use this Document
<br /> Concrete parking bumper s in
<br /> 1. Become familiar with the descriptions in the Compatible Devices and Use commercially available steel-reinforced [150 mm]
<br /> Products section. parking bumpers with typical dimensions of /
<br /> 2_Verify that the water level outside the tank is below the outlet pipe 12 inches wide by 6 inches high(300 mm x 150 I 12 in
<br /> saddle height using Step 1,Tables 1 and 2.and Figure 1. mm).Weight is 58 lbs/foot(86 kg/m)minimum. [300 mm]
<br /> 3. Determine if buoyancy control is required using Step 1,Table 2.
<br /> If buoyancy control is required,proceed to Step 2. Concrete traffic barrier
<br /> i
<br /> 2. Use the respective table for the tank model from Step 2,Table 2 to e .,.,
<br /> r
<br /> . , . Use commercially available steel-reinforced
<br /> determine the appropriate buoyancy control methods for the site concrete traffic barrier or equivalent.Typical
<br /> conditions. dimensions include a 24-inch-wide base
<br /> 5. Once a preferred buoyancy control method is selected,follow the tapering to a 6-inch-wide top,with a height
<br /> 32 in of approximately
<br /> procedures for Implementation provided in Step 3. 32 inches 600 mm x 150 mm x 800 mm.Weight
<br /> [800 mm] )is 390 lbs/foot(580 kg/m)minimum. g
<br /> Parts and Supplies
<br /> - = Poured Blocks
<br /> The parts and supplies necessary are to be purchased separately from the - _ .' Concrete precasters can pour blocks of
<br /> tank.All parts and supplies are either commercially available or available x --- t various dimensions and weights. Blocks are
<br /> through Infiltrator's network of tank distributors.Some parts may require 1 =--
<br /> often an affordable option if they satisfy the
<br /> fabrication on Site using common construction practices. 24 in s weight requirements for use as buoyancy
<br /> [600 mm] control(see Table 2 and the Supplemental
<br /> Compatible Devices and Products Force section of Step 2 for more information).
<br /> Infiltrator tanks are compatible with the following products for buoyancy
<br /> control: Helical Anchors
<br /> ChanceTM No-Wrench Screw Anchors with ti
<br /> • Tie-down straps;high-tensile-strength webbing,10,000 lb(4,500 kg) t
<br /> minimum capacity,nylon or polyester,with corrosion-resistant hardware. a 6-inch(150 mm)diameter flight,Class 7, _\..1
<br /> or equal.These anchors rely on the shear
<br /> • Concrete deadmen anchors:concrete-filled plastic half pipe,precast strength of the soil combined with the weight
<br /> parking bumper,precast traffic barrier,or poured block_ of the soil above the anchor flight to provide
<br /> holding strength.Proper installation is to ,�;
<br /> Helical anchors:ChanceTo No-Wrench Screw Anchors with minimum 4 feet(1.2 m)below the bottom of the tank
<br /> 8-inch(150 mm)diameter,Class 7 or equal. excavation and to within 5°of alignment ,`
<br /> with the webbing load.Determine the
<br /> Tie-Down Straps proper locations for anchor installation to `\
<br /> `� -3�w ensure that tie-down straps will be aligned ,\
<br /> Straps are commercially available in varying , - properly for each tank model(see Step l`
<br /> lengths and with assorted hardware and ;,: = 3:Implementation),and follow anchor ` : t
<br /> tightening options.Nylon or polyester manufacturer installation instructions.
<br /> strapping with minimum 10,000 lb(4,500 kg)capacity is required forle
<br /> buoyancy control use with Infiltrator tanks.Place straps up and over the `jj
<br /> tank at specified locations only(see Figure 5).Tighten straps snugly with is t`
<br /> a ratchet or turnbuckle system to remove all slack and slightly pre-load Typical working torque: is t:;
<br /> the system.All connections,fittings,and hardware must be corrosion Rad ,00 ft.lbs.1542 N m) iz
<br /> 1"Rod 1,000 ft.lbs.(1,356 N-m) I P.�--
<br /> resistant or coated with epoxy or other corrosion-resistant materials to 11,1'Rod 2,300 ft.lbs.(3,118 N m) t,
<br /> inhibit deterioration in the subsurface environment. Consider encapsulating t�` ,'
<br /> such components in heat-shrink tubing or painting on additional corrosion- '
<br /> resistant coatings prior to burial.
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