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<br /> Infiltrator IM and TW-Series. I `� NOVEMBER 2013
<br /> 0
<br /> Tarrk-Buoyancy an�c. Con r�of-Guidance � , r v� r FELTRaTo-R®
<br /> oY Y
<br /> tanks i
<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-and TW-Series tanks.Tank precast parking bumpers and traffic barriers,and poured blocks.The
<br /> • buoyancy control methods must be implemented according to state weight of the deadmen anchors combined with the weight of soil above
<br /> and/or local regulations,which may supersede the guidelines in this them provides buoyancy control when properly secured.Deadmen anchors
<br /> document.If unsure of the requirements for a particular site,contact are placed at the bottom of the tank excavation on opposite sides of the
<br /> the local health department or permitting authority. tank.The deadmen anchors are fastened to each other with tie-down
<br /> 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 mm]to
<br /> to determine if control is necessary and what methods are applicable: 18 in[450 mm] Concrete-filled plastic half pipe
<br /> • Infiltrator tank model Use Schedule 40 PVC plastic pipe having a
<br /> minimum inside diameter of 15 inches(375 mm)
<br /> • Maximum height of water outside the tank and above the tank bottom or HDPE corrugated pipe having a minimum
<br /> elevation inside diameter of 18 inches(450 mm)cut in half
<br /> • Depth of soil cover over the tank top r lengthwise.Fill with concrete having a minimum
<br /> Once tank buoyancy control measures are determined to be required and o o unit weight of 145 lbs/ft3(2.32 metric .tons/m)
<br /> a method has been selected and implemented,refer to Infiltrator IM-and 1/2-inch(1d with three equallyrsteel spaced 40-grade,is
<br /> 1/2-inch(13 mm)diameter bars.Weight is 61
<br /> TW-Series Tank Installation Instructions and Riser Connection Guidance lbs/ft(91 kg/m)minimum.
<br /> documents,as applicable,for completing the installation.
<br /> Steel Rebar
<br /> How to Use this Document 1
<br /> Concrete parking bumper 6 in i
<br /> 1. Become familiar with the descriptions In the Compatible Devices and Use commercially available steel-reinforced [150 mnij)' -.i .q
<br /> Products section. parking bumpers with typical dimensions of 1
<br /> 2.Verify the water level outside the tank is below the outlet pipe 12 inches wide by 6 inches high(300 mm x 150 1 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 barer
<br /> 2.Use the respective table for the tank model from Step 2,Table 3 to Use commercially available steel-reinforced
<br /> determine the appropriate buoyancy control methods for the site I concrete traffic barrier or equivalent.Typical
<br /> conditions. i dimensions include a 24-inch-wide base
<br /> y tapering to a 6-inch-wide top,with a height
<br /> 5.Once a preferred'buoyancy control method is selected,follow the 32 in1.4 of approximately
<br /> procedures for implementation provided in Step 3. 32 inches 600 mm x 150 mm x 800 mm.Weight
<br /> [800;mm] G ( ) g
<br /> 3 is 390 lbs/foot(580 kg/m)minimum.
<br /> Parts and Supplies. . , 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 i ° °
<br /> t ' < A various dimensions and weights.Blocks are
<br /> through Infiltrator's network of tank distributors.Some parts may require ' '
<br /> often an affordable option if they satisfy the
<br /> fabrication on site using common construction practices. ± 24 in weight requirements for use as buoyancy
<br /> [600 mm] control(see Table 3 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 5,1 U^TUR,..
<br /> • Tie-down straps:high-tensile-strength 10,000 Ib(4,500 kg) ChanceTM No-Wrench Screw Anchors with
<br /> pwebbing, R9 rROF a 6-inch(150 mm)diameter flight,Class 7, f minimum capacity,nylon or polyester,with corrosion-resistant hardware. `s/
<br /> or equal.These anchors rely on the shear .Cr] N 4 �,A
<br /> • Concrete deadmen anchors:concrete-filled plastic half pipe,precast strength of the soil combined with the wei
<br /> parking bumper,precast traffic barrier,or poured block. of the soil above the anchor flight to provi= ! ` 13a7$PE 43 l
<br /> • TM holding strength.Proper installation is to 44,Helical anchors:ChanceTM No-Wrench Screw Anchors with minimum •Z• •`•
<br /> 4 feet(1.2 m)below the bottom of the tank ��[['�"-
<br /> 6-inch(150 mm)diameter,Class 7 or equal. fi`" ' f
<br /> excavation and to within 5°of alignment ,.,,,.' EC tp i' �`
<br /> with the webbing load.Determine the ''f`' + �
<br /> Tie-Down Straps proper locations for anchor installation to 4 1' .k�s
<br /> Straps are commercially available in varying �. ensure that tie-down straps will be aligned ,E.L;t"
<br /> D =. properly for each tank model(see Step '*
<br /> lengths and with assorted hardware and y;i.. --,. 3:Implementation),and follow anchor
<br /> tightening options.Nylon or polyester manufacturer installation instructions. EXPIR (ON D, : 12-3t-20)
<br /> strapping with minimum 10,000 lb(4,500 kg)capacity is required for
<br /> buoyancy control use with Infiltrator tanks.Place straps up and over the -
<br /> tank at specified locations only(see Figure 5).Tighten straps snugly with
<br /> a ratchet or turnbuckle system to remove all slack and slightly pre-load Typical working torque:
<br /> the system.All connections,fittings,and hardware must be corrosion 1" Rod 400 ft.Ibs..(1, N.m)
<br /> resistant or coated with epoxy or other corrosion-resistant materials to Rod 1,000 ft.Ibs 1356 N.m) p *.
<br /> inhibit deterioration in the subsurface environment.Consider encapsulating
<br /> 1'h"Rod 2,300 ft.lbs.(3,118 N.m) ° ''
<br /> such components in heat-shrink tubing or painting on additional corrosion-
<br /> resistant coatings prior to burial.
<br /> Contact Infiltrator Systems'Technical Services Department for assistance at 1-800-221-4436.
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