clay brick pervious pavement case study › docs › third street pervious pavers-rev1... ·...
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OWEA COLLECTIONS CONFERENCE 2012
CLAY BRICK PERVIOUS PAVEMENT
CASE STUDY
CITY OF NEW ALBANY
May 10, 2012
Travis Eifert, PE, LEED AP
Doug Turney, PE, CFM, LEED AP
EMH&T
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STORMWATER MASTER PLAN
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VILLAGE CENTER STREETSCAPE CONCEPTS
Development of Historic
Center and Village Core
Pedestrian experience
and accessibility
Design of streets and
public places
Amenities
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PILOT PROJECT OPPORTUNITIES
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CITY EVALUATION CRITERIA
• Aesthetics consistent with
Historic Village Center
• Third Street must be
reconstructed
• Options explored
Overlay (Not Possible)
Spot repair (Not
Possible)
Full depth reconstruction
(Standard Section)
Reconstruction with
considerations for future
developments
• Stormwater requirements
Incentives for
redevelopment
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THIRD STREET: EXISTING CONDITIONS
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THIRD STREET: CONCEPT PLAN
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THIRD STREET:
GREEN INFRASTRUCTURE OPTIONS EVALUATED
Recommended Solution
Pervious Pavers
Most cost effective
Functional
Aesthetically pleasing
Water quality credits per
draft OEPA standards
Low maintenance
8
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PAVEMENT SELECTION – CONCRETE OR CLAY?
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PERMEABLE INTERLOCKING CONCRETE
PAVEMENT
Solid Concrete ( 3-1/8”)
8,000 psi (avg)
Can Be Machine
Installed
Can Be Used on Low
Volume Streets
Traffic Calming
Aesthetic Value
Life Cycle Cost Savings
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CLAY PERVIOUS PAVERS
2-3/4” Paver
14,000 psi (avg)
Better Durability
Less Likely to Fade
Installed by Hand
Aesthetic Value
Traffic Calming
Can Be Used on
Low Volume Streets
Life Cycle Cost
Savings
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Ohio Permeable Clay Paver Manufacturers:
Whitacre Greer – Alliance
Belden Brick - Canton
SELECTED PAVER:
PINE HALL BRICK – NORTH CAROLINA
COLOR: IRON SPOT
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Traditional Street Full Depth Replacement
Excavation, Street, Pavement $191,364
Storm Sewer/Water Quality Unit$107,990
10 year Maintenance (mill & pave) $ 18,597 Street & Storm Total: $317,951 Project Total: $426,052
Clay Pervious Paver Full Depth Replacement
Excavation, Street, Pavement $268,822
Storm Sewer/Water Quality Unit$ 42,152 Totals: $310,974 Project Total: $415,851 Winning Bid $424,389
PRELIMINARY COST ESTIMATE
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CLAY PAVER COSTS
Clay Paver Section Costs (11,916 sq.ft.)
Clay Paver Installation Cost $4.90 sq.ft.
Clay Paver Material Cost* $5.85 sq.ft.
No. 2/No. 57 Aggregate Cost $3.54 sq.ft
Total $14.29 sq. ft.
*Includes extra 10% for future repairs
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PAVEMENT DESIGN
How thick does pavement
have to be?
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STRUCTURAL DESIGN:
AASHTO FLEXIBLE PAVEMENT
Two Geotechnical Borings
– CBR of 4.6 and 8.0
– CBR value of 4.6 used
Traffic Count of 780 ADT
2% Truck Traffic Assumed
Structural Number Required 2.28
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Compacted Base – ODOT 204
Stone sub-base and pavement layer coefficient
of 0.14 used
Required Structural Thickness:
2.28/0.14 = 16.3”
Interlocking Pavement Industry uses 0.44 for
pavement course
Required Structural Thickness:
2.75”x0.44 = 1.21
(2.28—1.21)/0.14 = 7.6” + 2.75” = 10.4”
STRUCTURAL DESIGN:
AASHTO FLEXIBLE PAVEMENT
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Recommended Thickness of Pavement System
– Pavement + Stone Layer = 0.65 * Frost Depth (based on UNH Stormwater Center, 2009)
− Pavement + Stone Layer = 0.50 * Frost Depth (based on National Ready Mix Concrete Association)
Located North
of Latitude
Max. Frost
Depth
(in)
Min. Recommended
Thickness
(0.65 x Frost Depth)
(in)
38.3 Ironton 24 16
38.7 26 17
39.0 Cincinnati 28 18
39.3 30 20
39.7 32 21
40.0 Columbus 34 22
40.3 36 24
40.7 38 25
41.0 40 26
41.3 Cleveland 42 27
41.7 Ashtabula 44 29
* Tentative 12/10
Source: Floyd (1978)
FROST DEPTH
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WATER QUALITY VOLUME (WQV)
Full Infiltration of WQv within 48 hours
– pre- approval from Ohio EPA not required
No Infiltration of WQv (lined system or compacted
subgrade) drain within 24 hours
– case-by-case, prior approval required by EPA and MS4
Partial Infiltration of WQv within 48 hours
– case-by-case, prior approval required by EPA and MS4
Redevelopment Projects
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WATER QUALITY DESIGN
WQv
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DRAINAGE FROM ADJACENT AREAS
Pervious Impervious
Aimpervious < 2*Apervious
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CONSTRUCTION & OVERSIGHT:
LESSONS LEARNED 3RD STREET
NEW ALBANY
Use perforated 6” PVC pipe
– Protect against collapse during compaction
– Video inspect after compaction to verify integrity
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CONSTRUCTION & OVERSIGHT:
LESSONS LEARNED 3RD STREET
NEW ALBANY
Compaction of Aggregate Layer
– Use 10-15 ton vibratory roller
– Try to eliminate settlement of stone layer
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CONSTRUCTION & OVERSIGHT:
LESSONS LEARNED 3RD STREET
NEW ALBANY
Compaction of Aggregate Layer
– ODNR Recommends Lightly Compacted
– Village of New Albany wanted Full Compaction
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NO. 9 AGGREGATE
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NO. 9 AGGREGATE SCREED
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INSTALLATION
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PINE HALL BRICK – IRON SPOT
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WHITE BRICK STOP BAR
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SIDEWALK SETTLEMENT
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ROAD SALT
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INSTALLATION
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POST SWEEPING OF NO. 9 INTO VOIDS
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MID-APRIL 2011
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BEFORE
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AFTER (JULY 2011)