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Precast Concrete Pipe and BoxPrecast Concrete Pipe and Box

Culverts for Storm WaterCulverts for Storm Water

Management StructuresManagement Structures

Tyson H Hicks, PE

Rinker Materials

www.concrete-pipe.org


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Why rainwater harvest?Why rainwater harvest?

NPDES Phase II Regulations

Provides supplemental water for non-potable uses.

Mitigates urban flooding.

Recharge ground water.

Provides sustainability



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nonnon--potable usespotable uses



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Provides supplemental water forProvides supplemental water for

nonnon--po a e usespo a e uses



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ga es r an oo ngga es r an oo ng

Many communities require some type of onsite

ra nwater storage. orma y, t e storage s es gne to

accommodate the difference between the pre and post

develo ed rainfall runoff



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ga es r an oo ngga es r an oo ng

systems utilized in stand alone or in

conjunction with storm water ponds

helps control flooding.



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Sustainability seeks to balance theSustainability seeks to balance theeconomic, social and economiceconomic, social and economicimpacts, recognizing that populationimpacts, recognizing that population

rowth will continue. Sustainablerowth will continue. Sustainableinfrastructure builds the facilities andinfrastructure builds the facilities and

structures we need today withoutstructures we need today without

futurefuture



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SS Credit 6.1 & 6.2 : Storm Water Design, Quality ControlIntent: Limit disruption of natural water hydrology by reducingimpervious cover, increasing onsite infiltration, reducing oreliminating pollution from storm water runoff.

WE Credit 1.1 & 1.2 : Water Efficient LandscapingIntent: Limit or eliminate the use of potable water or other

near the project site for landscape irrigation.

WE Credit 2.0 : Innovative Wastewater Technologies

demand while increasing the local aquifer recharge.



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Precast Concrete Pipe and Box CulvertPrecast Concrete Pipe and Box Culvert

Structures for Underground CisternsStructures for Underground Cisterns

AdvantagesAdvantages: Land above has

alternate uses.

Pollution removal-

SWQ-BMPs

Maintainable

ruc ura y oun Minimizes Risk



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DESIGN CONSIDERATIONSDESIGN CONSIDERATIONS

Storage Volume Vs Available Space.

Structural Design at Shallow Depths.

.

Access for Periodic Inspection and

Maintenance. Design Life & Risk of Premature Failure?

Cost per CF of storage.



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recas n ergroun ys ems a e enserecas n ergroun ys ems a e ense

100 year design life

o spec a ac requ rements.

No floatation possibilities

-

Easily Constructed

Environmentally Friendly- All NaturalMaterials-No chlorides,ethylene's,zincleaching into the soil.



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What makes our precast concrete pipe

and box culvert sections advantageous?

Simplicity

Speed of Installation Local Suppliers Non- atented ASTM Specifications



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--

Review:

ys em oo pr n .

Pipe Heights of Cover.

Site Restraints- R.O.W.s,Property Lines, Building


Locations, Utilities, etc.


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-

One recast i e or Box Culvert canequal the area of 2-3 flexible pipes?

Reduce number of i e runs andshorten lengths - (Savings onexcavation- backfilling-time of

Installation-environmental impact). See if a precast box culvert would do


the trick.


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--

Review the i e la out.

Review footprint and calculate the

excavation and backfill savin s.

This alone will result in significantsavin s.

Inquire on pipe-system price.



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Example Project- Shows the

vantage

Project has two separate underground detention systems tostore storm water.

Both systems were designed using 3 lines of 36 Flexible x104 with manifold/headers each end.



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- - x =

Simplify the fittings

Consider saddle-tee structuresEnd-Caps


.


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Ste 2 & 3Ste 2 & 3

Installation

Savings

17 x 5x 105=8,925 ft3

select backfill

with Flexible Pipe.

70% additional

trench width.

11--60 Elliptical RCP60 Elliptical RCP

www.concrete-pipe.org 10 x 3 x 112=3,360 ft3

--


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Franklin Site Photos

www.concrete-pipe.org Outlet Structure with weir


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3 Saddle Tees

3 Precast Inlet/Outlet

Structures



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Inlet Structure

& Hydraulic Shape

Forever.



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- -Franklin, TN

Project has two separate underground BMPdetention systems to store storm water.

Both systems were designed using 6 lines of 60 .

Volume needed 35,300 ft3

Limiting Factor was existing invert of existingstorm pipe in ROW that system would tie.

This fixed invert meant 5 max pipe height (dia.)

.



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The Original Layout of 60 Flexible PipeThe Original Layout of 60 Flexible Pipe

Two I ent ca Systems Separate y Roa way

6 Lines Each - 60 x 160



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Two S stems S lit b Road6 Lines 60 RCP x 152 EACH



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Franklin, TN



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MANWAY/INSPECTION PORTS


Equalization Piping


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Manifold & Manway Access



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Horizontal La out Flexibilit Horizontal La out Flexibilit

By USING BENDSBy USING BENDS

BENDS PROVIDE Flexibility in layout

Miss Trees!!!!

Follow Critical



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a e w u eaa e w u ea



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The University of Kentucky Dorm Expansion



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Freedom Center Mall

e eve opmen ro ec

254, 680 gallons

Rainwater used to flush toilets and

irri ation



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Storm Drainage

Culverts

Bridges


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Parkridge Hospital Phase 1

a anooga,


3 cells of 6 x 3

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Boxes connected to each other

All Holes/Weir Slots


Cut on Site. onnect w t equa zat on p pes.

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Parkridge Phase II


Twin 8 x 3

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Detention System

Ford Dealership

Total of 312 feet.

,

Double line of 6 x 4 (2 @ 156)

Total installation time - 5 da s 2 days of excavation.

1 da to re are sub rade & install

bedding. 2 days to install & backfill.


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Knoxville--Total of 312 feet.ou e ne o x


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3-10 Pipe Connections For Flow Equalization


- anways e

4 Endcaps, 1 with Outlet Control Flow Openings

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Backfill Placed withBackfill Placed with

g t ac neryg t ac nery

All Boxes Set In 1 1/2 Days.


Backfill Completed By End Of 2nd Day, Ready For

Pavement.

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Westshore Yacht Club, Tampa FL

,

256 feet of 10x4 RCB with removable tops


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ox u vertox u vert

,

whereas pipe systems may require deeperburial. Design for shallow

cover w t - oa ng.

storage is competitive

with other systems


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Why Use Concrete for Your

Underground Detention System?

ruc ura n egr y

Maximize Land Use and Your Investment

Always a Superior Choice to Flexible Pipe

Reduce Financial Risk

True Environmental Benefits


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THANK YOU FOR YOUR TIME!!


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