Prinsco HydroStor HS180 Design Manual Download Page 11 | Manualshive

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Design Guide

Page 10

©2015 Prinsco, Inc | 800.992.1725 |

www.prinsco.com

05/15

Table 2 – HS180 Minimum Required Stone Foundation Depth (inches)

4.2

Chamber Row Spacing

The minimum required spacing between chamber rows is 6 inches for the HS75 and 8 inches for
the HS180. This spacing is measured from the outside edges of the chamber feet. The spacing may
be increased if necessary in order to mitigate the effects of weaker native subgrade soils or to
reduce the amount of foundation stone required under the chambers.

Figure 5 - HydroStor Chamber Cross Section

4.4

4.3

4.2

4.1

4.0

3.9

3.8

3.7

3.6

3.5

3.4

3.3

3.2

3.1

3.0

2.9

2.8

2.7

2.6

2.5

2.4

2.3

2.2

2.1

2.0

2

9

9

9

9

9

9

9

9

9

9

9

9

9

9

9

9

9

9

9

12

12

12

15

15

15

2.5

9

9

9

9

9

9

9

9

9

9

9

9

9

9

9

9

9

12

12

12

12

15

15

15

18

3

9

9

9

9

9

9

9

9

9

9

9

9

9

9

9

9

12

12

12

15

15

15

18

18

18

3.5

9

9

9

9

9

9

9

9

9

9

9

9

9

9

12

12

12

12

15

15

15

18

18

24

24

4

9

9

9

9

9

9

9

9

9

9

9

9

12

12

12

12

15

15

15

15

18

18

24

24

24

4.5

9

9

9

9

9

9

9

9

9

9

9

12

12

12

12

15

15

15

18

18

18

24

24

24

30

5

9

9

9

9

9

9

9

9

9

12

12

12

12

15

15

15

15

18

18

18

24

24

24

24

30

5.5

9

9

9

9

9

9

9

12

12

12

12

12

15

15

15

18

18

18

24

24

24

24

24

30

30

6

9

9

9

9

9

9

12

12

12

12

12

15

15

15

15

18

18

18

24

24

24

24

30

30

30

6.5

9

9

9

9

9

12

12

12

12

12

15

15

15

15

18

18

18

24

24

24

24

30

30

30

30

7

9

9

9

9

12

12

12

12

12

12

15

15

15

18

18

18

24

24

24

24

30

30

30

30

36

7.5

9

9

12

12

12

12

12

15

15

15

15

18

18

18

18

24

24

24

24

24

30

30

30

36

36

8

9

12

12

12

12

12

15

15

15

15

18

18

18

18

24

24

24

24

24

30

30

30

36

36

36

Cover

Height (ft)

Minimum Required Bearing Capacity of Native Soil Subgrade (ksf)

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Summary of Contents for HydroStor HS180

Page 1: ...DESIGN GUIDE...

Page 2: ...epresents the most advanced engineering molding and structural performance in the storm water management industry Prinsco can assist in specifying HydroStor stormwater systems based on the project nee...

Page 3: ...Association of State Highway and Transportation Officials AASHTO Load and Resistance Factor Design LRFD Bridge Design Specifications The chambers are injection molded and manufactured to meet the requ...

Page 4: ...tor stormwater chamber system is an open bottom structure that allows infiltration of stormwater into the ground Most chamber systems are designed to provide a detention system type of control There a...

Page 5: ...Design Guide Page 4 2015 Prinsco Inc 800 992 1725 www prinsco com 05 15 Figure 1 HydroStor HS75 Chamber End Caps...

Page 6: ...Design Guide Page 5 2015 Prinsco Inc 800 992 1725 www prinsco com 05 15 Figure 2 HydroStor HS180 Chamber End Caps...

Page 7: ...e row s last chamber The row can then be restarted after the interruption To ease construction and provide easy in field guidance each chamber is marked with overlap locations as well as the installat...

Page 8: ...Each endcap must be attached to the chamber by use of three 3 self tapping screws at the indicated locations The chambers are required to be placed at the end of each row in order to seal the chamber...

Page 9: ...could provide additional loading for which the chambers were not designed 3 2 Testing As part of the design and evaluation program HydroStor chambers have been installed in field conditions to perform...

Page 10: ...required cover heights and subgrade bearing capacity combinations Refer to Figure 5 for minimum requirements for foundation depths and chamber spacing If soils with a bearing capacity of less than 2...

Page 11: ...5 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 12 12 12 12 15 15 15 18 3 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 12 12 12 15 15 15 18 18 18 3 5 9 9 9 9 9 9 9 9 9 9 9 9 9 9 12 12 12 12 15 15 15 18 18 24 24 4 9 9 9 9 9 9...

Page 12: ...w provide the cumulative storage volumes for the HydroStor HS75 chamber and HS180 chambers and end caps respectively These tables can be used to calculate the stage storage volumes for the retention o...

Page 13: ...4 86 41 46 36 73 74 40 46 36 72 62 39 46 36 71 50 38 46 36 70 38 37 46 36 69 26 36 46 36 68 14 35 46 36 67 02 34 46 23 65 83 33 45 93 64 53 32 45 32 63 04 31 44 46 61 41 30 43 45 59 68 29 42 31 57 87...

Page 14: ...98 50 112 01 151 91 49 110 98 149 60 48 109 71 147 15 47 108 25 144 58 46 106 63 141 91 45 104 87 139 16 44 103 00 136 34 43 101 01 133 45 42 98 93 130 51 41 96 75 127 51 40 94 50 124 46 39 92 16 121...

Page 15: ...3 19 06 40 59 52 19 05 40 04 51 19 04 39 48 50 19 01 38 91 49 18 94 38 32 48 18 84 37 71 47 18 71 37 08 46 18 55 36 44 45 18 36 35 77 44 18 14 35 09 43 17 90 34 39 42 17 63 33 68 41 17 34 32 96 40 17...

Page 16: ...pacing 6 2 Stone Backfill The acceptable stone materials for each of the backfill layers are shown in Table 6 The embedment stone which is used under in between and above the chambers must be washed c...

Page 17: ...ll Material Location Placement Methods Restrictions HS180 Compaction Requirements HS75 Compaction Requirements D Final Backfill A variety of placement methods may be used All construction loads must n...

Page 18: ...is necessary to protect the system from infiltration of the surrounding native soil A 4 or 6oz non woven geotextile is to be used around the entire chamber system to prevent soil infiltration into the...

Page 19: ...a very effective treatment train The treatment train can consist of up to three levels of treatment for stormwater entering the HydroStor system including the following Pre Treatment Systems HydroSto...

Page 20: ...ration of water leaving the row capturing sediment and other pollutants within the row Water in the sediment row has no outlet other than the bottom of the chamber and is forced through the filter fab...

Page 21: ...oject and the age of the system Contact your local Prinsco representative for assistance on sizing of the sediment row Further detail on the sediment row is shown in Figure 10 Figure 10 Sediment Row 7...

Page 22: ...only store and treat water but also work in combination with other devices to provide a comprehensive water quality solution 7 6 Additional Inlet Options Treatment of the stormwater is recommended pr...

Page 23: ...the chamber row ends with a header system However an inlet perpendicular to the system maybe desirable in some cases If this is required a chamber can be removed from a row and replaced with a tee co...

Page 24: ...able 8 For velocities greater than those listed in Table 8 scour protection should be used to assure no loss of stone and subsequent foundation strength The use of a 15 wide strip of an AASHTO M288 Cl...

Page 25: ...drain the system If a sump is used it is usually unnecessary to slope the base to provide drainage The underdrain should not be installed under the chambers Figures 14 depicts an optional perimeter u...

Page 26: ...5 An outlet pipe manifold should be connected to the downstream end cap s at the designed invert The sediment row should not be connected to an outlet pipe as that will allow sediment to escape from t...

Page 27: ...where the groundwater is contaminated or underlying conditions could be impacted by excess water infiltration When it is not desirable for the water to infiltrate into the underlying soil a thermopla...

Page 28: ...and approved by the design engineer If you need technical assistance with the layout or design of the HydroStor system contact your local Prinsco representative STEP 1 Determine the amount of storage...

Page 29: ...e 10 Stone Required per Chamber End Cap Stone Foundation Depths 6 12 18 HS75 Chamber 2 64 cy 3 56 tons 3 26 cy 4 40 tons 3 88 cy 5 24 tons Stone Foundation Depths 9 12 15 18 HS180 Chamber 6 15 cy 8 30...

Page 30: ...depth of cover exceeds 23 5 the volume should be increased 1 88cy per chamber and 0 61cy per end cap for each additional foot of depth STEP 6 Calculate the amount of nonwoven geotextile required The b...

Page 31: ...Design Guide Page 30 2015 Prinsco Inc 800 992 1725 www prinsco com 05 15 11 0 Structural Cross Sections and Specifications Figure 16 HS75 Structural Cross Section Detail...

Page 32: ...Design Guide Page 31 2015 Prinsco Inc 800 992 1725 www prinsco com 05 15 Figure 17 HS180 Structural Cross Section Detail...

Page 33: ...ion ports allow for visual inspection with the use of a flashlight or a long stick to measure the level of sediment Figure 18 Inspection Ports for Chamber Sediment Rows 12 2 Inspection Frequency Initi...

Page 34: ...lt concrete etc For installations without pavement where rutting from vehicles may occur the minimum cover height should be increased to 24 for the HS75 chambers and 30 for the HS180 chambers 4 The ma...

Page 35: ......

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