delmont road neighborhood roadway improvements project

DESIGN RECOMMENDATIONS AND PAVEMENT TEST PIT AND CORE DATA

DELMONT ROAD NEIGHBORHOOD ROADWAY IMPROVEMENTS PROJECT VARIOUS LOCATIONS

PREPARED FOR

Town of East Hartford Department of Public Works 740 Main Street East Hartford, CT 06108

PREPARED BY

100 Great Meadow Road Suite 200 Wethersfield, CT 06109 860-807-4300

August 2019

\\vhb\gbl\proj\Wethersfield\42413.01\reports\Pavement\Bodwell Road\012419 Bodwell Rd Pavement Design MEMO (2018-01).doc

100 Great Meadow Road

Suite 200

Wethersfield, CT 06109

P 860.807.4300

To: Bill Anderson, PE

VHB/Wethersfield

Date: March 29, 2019

Project #: 42413.01

From: Jose Otero

VHB/Project Manager

Re: Bodwell Road – East Hartford, CT

Following are the recommendations for the design and construction of Bodwell Road from Burnside Avenue to

Maridon Road.

Pavement designs were conducted utilizing American Association of State Highway and Transportation Officials,

"AASHTO Guide for Design of Pavement Structures, 1993", design criteria using the “Layered Analysis Thickness

Design” method of component thickness of the pavement structure, traffic loadings, magnitude and frequency of

loadings, material relationships, environmental considerations, soil support and the AASHTO design assumptions.

Basic design assumptions incorporated into the structural analysis were:

1. The initial serviceability will have a Road Manager Index of 96, or an AASHTO (P0) = 4.8;

2. The terminal serviceability will be a Road Manager Index of 65, or an AASHTO (Pt) = 2.5;

3. The distress level investigation results indicate there is severe alligator cracking, moderate patched potholes and

distortion. There is evidence of minor extensive raveling and moderate block cracking and transverse and

longitudinal cracking resulting in a Road Manager Pavement Condition Index (PCI) of 45.

4. A PCI of 0 indicates nearly impassible extremely poor pavement condition index, while a newly paved, perfect

pavement would exhibit a condition of 100.

5. The reliability levels used for the pavement design will be 75%.

6. Roadbed soils are AASHTO A-4 and A-1-b which are classified as lean clay and well graded silty sand by the

Unified Classification system. The subgrades are poor to fair foundations when not subject to frost action, having

a moderate to high frost potential and exhibiting fair to poor drainage characteristics. The roadbed soils will

provide some level of structural support.

7. The Average Daily Traffic (ADT) used for this design was estimated to be 210 vehicles per day with small trucks

and buses accounting for 2% of the ADT. The ADT is based on an average of 10 trips per household per day.

Burnside Avenue to Maridon Road:

• The existing pavement structure cross-section consisted of 2.0” to 3.8” (average 3.1”) of hot mix asphalt

(HMA). The granular bases consisted of 7” to 9” of grading “A” gravel founded on lean clay and well graded

silty sand subgrades.

• Based on the materials evaluation and traffic, this section was found to be structurally inadequate, requiring a

0.5” overlay to meet the Elastic Layer Design, which is NOT recommended.

• Several monitoring wells were installed in January of 2019 because of the presence of high groundwater in

test pits. Groundwater rose as high as 20” from existing pavement elevation. Underdrains are recommended

to prevent premature failure of the roadway base after reclaim or repair.

• MILL AND OVERLAY is not recommended as a treatment alternative due to the advanced deterioration of

existing pavement.

Ref: 42413.01

March 29, 2019

Page 2

\\vhb\gbl\proj\Wethersfield\42413.01\reports\Pavement\Bodwell Road\012419 Bodwell Rd Pavement

Design MEMO (2018-01).doc

Alternative Service Life Recommendations

#1 20-years RECLAIM the existing HMA and grading “A” gravel bases by pulverization

and blending methods to a 9" depth. INSTALL UNDERDRAINS. Compact

the recycled material to proper lines and grades, leaving a minimum of 6"

as the new base course prior to placing 1.5” of Superpave S-0.375” Level 2

as the intermediate course and 1.5” of Superpave S-0.375” Level 2 as the

surface course, with a tack coat between lifts.

#2 20-years RECONSTRUCT the existing HMA grading “A” gravel bases by removing

them to a 9” depth. INSTALL UNDERDRAINS. Compact the silty sand

subbase to proper lines and grades prior to placing 6” of processed

aggregate as a base. Compact the base prior to placing 1.5” of Superpave

S-0.375” Level 2 as the intermediate course and 1.5” of Superpave S-0.375”

Level 2 as the surface course, with a tack coat between lifts.

#3 20-years REMOVE the existing 3.1” of HMA. INSTALL UNDERDRAINS. Compact to

proper lines, prior to placing 1.5” of Superpave S-0.375” Level 2 as the

intermediate course and 1.5” of Superpave S-0.375” Level 2 as the surface

course, with a tack coat between lifts.

4" Hot Mix Asphalt

(HMA) [1" Deteriorated]

7" Grading "A" Gravel

A-1-a

19" sandy lean clay with

gravel A-4

TP7 - 194' N of Burnside Ave, 6' off SB lane curb;______________________________________________________________________________________________


Wethersfield, Connecticut 06109

860.807.4300

STREET:

CITY, STATE:

Bodwell Road - Burnside Ave to Maridon Rd

East Hartford, CT

TP# / LOCATION:

Description:

high

This lean clay is a poor foundation when not subject to frost action, having a high frost potential and exhibiting poor

to impervious drainage characteristics.

Frost Potential:

PROJECT #: 42413.01

Tested By: TT/AW Checked By: VHB

CT - M.02.06 Gravels "A"

PL= LL= PI=

D85= D60= D50=

D30= D15= D10=

Cu= Cc=

USCS= AASHTO=

*

SIEVE PERCENT SPEC.* PASS?

SIZE FINER PERCENT (X=NO)

PE

RC

EN

T F

INE

R

0

10

20

30

40

50

60

70

80

90

100

GRAIN SIZE - mm.

0.010.1110100

% +3" % GravelCoarse

% Sand

Fine Silt

% Fines

0 71 12 13 4

6 in

.

3 in

.

2 in

.

1½

in

.

1 in

.

¾ in

.

½ in

.

3/8

in

.

#4

#1

0

#2

0

#3

0

#4

0

#6

0

#1

00

#1

40

#2

00

12/20/2018

Grading "A" Gravel

5"3-1/2"2-1/2"

2"1-1/2"3/4"1/2"1/4"#10#40#50#60

#100#200

100100100100100

95613429171310

63.8

100

55 - 100

25 - 6015 - 455 - 25

0 - 100.0 - 5.0

NP NV NP

16.6910 12.6120 10.86943.8251 0.3574 0.2424

52.03 4.79

GP A-1-a

Source of Sample: TP7 - 194' N of Burnside Ave, 6' off SB lane curb; Depth: 7Sample Number: BASE Date:

Material Description

Atterberg Limits

Coefficients

Classification

Remarks

Figure

Bodwell Road - Burnside Ave to Maridon Rd 42413.01

East Hartford, CT

Project: Project No.:

Client:

Vanasse Hangen Brustlin, Inc.



PL= LL= PI=

D85= D60= D50=

D30= D15= D10=

Cu= Cc=

USCS= AASHTO=

*



PE

RC

EN

T F

INE

R

0

10

20

30

40

50

60

70

80

90

100

GRAIN SIZE - mm.

0.010.1110100


% Sand

Fine Silt

% Fines

0 24 14 12 50

6 in

.

3 in

.

2 in

.

1½

in

.

1 in

.

¾ in

.

½ in

.

3/8

in

.

#4

#1

0

#2

0

#3

0

#4

0

#6

0

#1

00

#1

40

#2

00

12/20/2018

sandy lean clay with gravel

5"3-1/2"2-1/2"

2"1-1/2"3/4"1/2"1/4"#10#40#50#60

#100#200

100100100100100

969384766259575550

100

55 - 100

25 - 6015 - 455 - 25

0 - 100.0 - 5.0

XXX

XX

14 24 10

6.9391 0.3412

CL A-4

DCP = 6" @ 5 blows

Mr = 6,035 psi;

Source of Sample: TP7 - 194' N of Burnside Ave, 6' off SB lane curb; Depth: 19Sample Number: SUBGRADE Date:


Atterberg Limits

Coefficients

Classification

Remarks

Figure


East Hartford, CT


Client:


3" Hot Mix Asphalt



A-1-a

16" well-graded sand with

silt and gravel A-1-b

TP8 - 679' N of Burnside Ave, 6' off NB lane curb;_____________________________________________________________________________________________

STREET:

CITY, STATE:

Bodwell Road - Burnside Ave to Maridon Rd

East Hartford, CT

TP# / LOCATION:

Description:

slight to moderate

This well graded silty sand is a fair to good foundation when not subject to frost action, having a moderate frost

potential and exhibiting fair to poor drainage characteristics.

Frost Potential:

PROJECT #: 42413.01



860.807.4300



PL= LL= PI=

D85= D60= D50=

D30= D15= D10=

Cu= Cc=

USCS= AASHTO=

*



PE

RC

EN

T F

INE

R

0

10

20

30

40

50

60

70

80

90

100

GRAIN SIZE - mm.

0.010.1110100


% Sand

Fine Silt

% Fines

0 69 12 15 4

6 in

.

3 in

.

2 in

.

1½

in

.

1 in

.

¾ in

.

½ in

.

3/8

in

.

#4

#1

0

#2

0

#3

0

#4

0

#6

0

#1

00

#1

40

#2

00

12/20/2018

Grading "A" Gravel

5"3-1/2"2-1/2"

2"1-1/2"3/4"1/2"1/4"#10#40#50#60

#100#200

100100100100

8554463731191411

74.2

100

55 - 100

25 - 6015 - 455 - 25

0 - 100.0 - 5.0

NP NV NP

37.9268 23.0327 16.16711.7476 0.3180 0.2238

102.93 0.59

GP A-1-a

Source of Sample: TP8 - 679' N of Burnside Ave, 6' off NB lane curb; Depth: 9Sample Number: BASE Date:


Atterberg Limits

Coefficients

Classification

Remarks

Figure


East Hartford, CT


Client:




PL= LL= PI=

D85= D60= D50=

D30= D15= D10=

Cu= Cc=

USCS= AASHTO=

*



PE

RC

EN

T F

INE

R

0

10

20

30

40

50

60

70

80

90

100

GRAIN SIZE - mm.

0.010.1110100


% Sand

Fine Silt

% Fines

0 31 31 29 9

6 in

.

3 in

.

2 in

.

1½

in

.

1 in

.

¾ in

.

½ in

.

3/8

in

.

#4

#1

0

#2

0

#3

0

#4

0

#6

0

#1

00

#1

40

#2

00

12/20/2018

well-graded sand with silt and gravel

5"3-1/2"2-1/2"

2"1-1/2"3/4"1/2"1/4"#10#40#50#60

#100#200

100100100100100

9791826938262112

8.9

100

55 - 100

25 - 6015 - 455 - 25

0 - 100.0 - 5.0

XXX

XX

NP NV NP

8.1991 1.0739 0.65550.3341 0.1901 0.1032

10.41 1.01

SW-SM A-1-b

DCP = 2" @ 5 blows;

Mr = 18,537 psi;

Source of Sample: TP8 - 679' N of Burnside Ave, 6' off NB lane curb; Depth: 16Sample Number: SUBGRADE Date:


Atterberg Limits

Coefficients

Classification

Remarks

Figure


East Hartford, CT


Client:


CORE PROFILE

PROJECT NUMBER:

LOCATION: FROM:

DATE SAMPLED: TO:

19 Area: 97' N of Burnside Ave, 4' off NB lane edge of pavement;

DEPTH DEPTH CLASSIFICATIONLayer Total

0.77'' 3.70'' Hot Mix Asphalt (HMA)

2.93'' HMA

0.05606061 Processed Aggregate0.61666667

20 Area: 219' N of Burnside Ave, 8' off NB lane curb;



2.87'' HMA


21 Area: 388' N of Burnside Ave, CL;



1.49'' HMA

1.03'' Deteriorated HMA


22 Area: 485' N of Burnside Ave, 8' off SB lane curb;





CORE#:

CORE#:

CORE#:

CORE#:

42413.01

Jose R. Otero Jr., Project Manager

Bodwell Road, East Hartford, CT Burnside Ave

Thursday, December 20, 2018 Maridon Rd

ww

w.v

hb

.co

m


Suite 200


P 860.807.4300

F 860.372.4570

Engineers | Scientists | Planners | Designers

\\vhb\gbl\proj\Wethersfield\42413.01\reports\Pavement\Bodwell Road\122018 Bodwell Rd COREPROF 4-Layers (V2018.03)

CORE PROFILEpage 2

LOCATION: FROM:

DATE SAMPLED: TO:

23 Area: 582' N of Burnside Ave, 4' off SB lane curb;



1.21'' HMA

2.10'' HMA


24 Area: 776' N of Burnside Ave, CL;





CORE#:

CORE#:

Bodwell Road, East Hartford, CT Burnside Ave

December 20, 2018 Maridon Rd



\\vhb\gbl\proj\Wethersfield\42413.01\reports\Pavement\Bodwell Road\122018 Bodwell Rd COREPROF 4-Layers (V2018.03)

\\vhb\gbl\proj\Wethersfield\42413.01\reports\Pavement\Delmont Road\022719 Delmont Rd Pavement Design MEMO (2018-01).doc


Suite 200


P 860.807.4300


VHB/Wethersfield

Date: March 5, 2019

Project #: 42413.01

From: Joshua Aldrich, P.E.

VHB/Pavement Engineer

Re: Delmont Road – East Hartford, CT

Following are the recommendations for the design and construction of Delmont Road from Burnside Avenue to

Maridon Road.









distortion. There is evidence of minor raveling and moderate block cracking and severe transverse and





6. Roadbed soils are AASHTO A-1-b and A-4 which are classified as poorly graded silty sand and silty sand by the

Unified Classification system. The subgrades fair to good foundations when not subject to frost action, having a

moderate to high frost potential and exhibiting fair to poor drainage characteristics. The roadbed soils will provide

some level of structural support.




• The existing pavement structure cross-section consisted of 3.0” to 7.6” (average 5.0”) of hot mix asphalt (HMA)

over 2.0” to 6.0” of deteriorated HMA. The granular bases consisted of 3” to 6” of poorly graded gravel and

silty sand founded on silty sand and well graded silty sand subgrades.

• Based on the materials evaluation and traffic, this section was found to be structurally adequate.


existing pavement.

Ref: 42413.01

March 5, 2019

Page 2

\\vhb\gbl\proj\Wethersfield\42413.01\reports\Pavement\Delmont Road\022719 Delmont Rd

Pavement Design MEMO (2018-01).doc


#1 20-years RECONSTRUCT the existing HMA, deteriorated HMA and poorly graded

gravel bases by removing them to a 9” depth. Compact the silty sand

subbase to proper lines and grades prior to placing 6” of processed



Level 2 as the surface course, with a tack coat between lifts.

#2 20-years RECLAIM the existing HMA and poorly graded gravel bases by

pulverization and blending methods to a 9" depth. Compact the recycled

material to proper lines and grades, leaving a minimum of 6" as the new

base course prior to placing 1.5” of Superpave S-0.375” Level 2 as the



5" Hot Mix Asphalt


6" poorly graded gravel

with silt and sand A-1-a

19" poorly graded sand

with silt and gravel A-1-b

TP1 - 180' N of Burnside Ave, 8' off NB lane curb;______________________________________________________________________________________________



860.807.4300

STREET:

CITY, STATE:

Delmont Road - Burnside Avenue to Maridon Road

East Hartford, CT

TP# / LOCATION:

Description:

moderate

This poorly graded silty sand is a fair to good foundation when not subject to frost action, having a moderate frost

potential and exhibiting fair drainage characteristics.

Frost Potential:

PROJECT #: 42413.01


CT - M.05.01 Processed Aggregate Base

PL= LL= PI=

D85= D60= D50=

D30= D15= D10=

Cu= Cc=

USCS= AASHTO=

*



PE

RC

EN

T F

INE

R

0

10

20

30

40

50

60

70

80

90

100

GRAIN SIZE - mm.

0.010.1110100


% Sand

Fine Silt

% Fines

0 64 15 15 6

6 in.

3 in.

2 in.

1½

in.

1 in.

¾ in.

½ in.

3/8

in.

#4

#10

#20

#30

#40

#60

#100

#140

#200

12/20/2018

poorly graded gravel with silt and sand

5"3-1/2"2-1/2"

2"1-1/2"3/4"1/2"1/4"#10#40#50#60#100#200

100100100100100

96694236211613

85.6

10095 - 100

50 - 75

25 - 45

5 - 20

2 - 12

X

X

NP NV NP

15.8594 11.0450 8.80960.8412 0.2899 0.1999

55.24 0.32

GP-GM A-1-a

Source of Sample: TP1 - 180' N of Burnside Ave, 8' off NB lane curb; Depth: 6Sample Number: BASE Date:


Atterberg Limits

Coefficients

Classification

Remarks

Figure

Delmont Road - Burnside Avenue to Maridon Road 42413.01

East Hartford, CT


Client:




PL= LL= PI=

D85= D60= D50=

D30= D15= D10=

Cu= Cc=

USCS= AASHTO=

*



PE

RC

EN

T F

INE

R

0

10

20

30

40

50

60

70

80

90

100

GRAIN SIZE - mm.

0.010.1110100


% Sand

Fine Silt

% Fines

0 29 26 33 12

6 in.

3 in.

2 in.

1½

in.

1 in.

¾ in.

½ in.

3/8

in.

#4

#10

#20

#30

#40

#60

#100

#140

#200

12/20/2018

poorly graded sand with silt and gravel

5"3-1/2"2-1/2"

2"1-1/2"3/4"1/2"1/4"#10#40#50#60#100#200

100100100100100

989377714533271712

10095 - 100

50 - 75

25 - 45

5 - 20

2 - 12

X

X

X

X

NP NV NP

9.0948 0.7749 0.50570.2715 0.1210

SP-SM A-1-b

DCP = 7" @ 5 blows;

Mr = 4,954 psi;

Source of Sample: TP1 - 180' N of Burnside Ave, 8' off NB lane curb; Depth: 19Sample Number: SUBGRADE Date:


Atterberg Limits

Coefficients

Classification

Remarks

Figure


East Hartford, CT


Client:


10" Hot Mix Asphalt


3" silty sand with gravel

A-1-b


with silt and sand A-1-b

13" silty sand A-4

TP2 - 590' N of Burnside Ave, 8' off SB lane curb;______________________________________________________________________________________________

STREET:

CITY, STATE:

Delmont Road - Burnside Avenue to Maridon Road

East Hartford, CT

TP# / LOCATION:

Description:

moderate to high

This silty sand is a fair to good foundation when not subject to frost action, having a moderate to high frost potential

and exhibiting fair to poor drainage characteristics.

Frost Potential:

PROJECT #: 42413.01



860.807.4300



PL= LL= PI=

D85= D60= D50=

D30= D15= D10=

Cu= Cc=

USCS= AASHTO=

*



PE

RC

EN

T F

INE

R

0

10

20

30

40

50

60

70

80

90

100

GRAIN SIZE - mm.

0.010.1110100


% Sand

Fine Silt

% Fines

0 31 23 33 13

6 in.

3 in.

2 in.

1½

in.

1 in.

¾ in.

½ in.

3/8

in.

#4

#10

#20

#30

#40

#60

#100

#140

#200

12/20/2018

silty sand with gravel

5"3-1/2"2-1/2"

2"1-1/2"3/4"1/2"1/4"#10#40#50#60#100#200

100100100100100

928775694635301913

10095 - 100

50 - 75

25 - 45

5 - 20

2 - 12

X

X

X

X

NP NV NP

11.3260 0.7953 0.49030.2495 0.0997

SM A-1-b

Source of Sample: TP2 - 590' N of Burnside Ave, 8' off SB lane curb; Depth: 3Sample Number: BASE Date:


Atterberg Limits

Coefficients

Classification

Remarks

Figure


East Hartford, CT


Client:




PL= LL= PI=

D85= D60= D50=

D30= D15= D10=

Cu= Cc=

USCS= AASHTO=

*



PE

RC

EN

T F

INE

R

0

10

20

30

40

50

60

70

80

90

100

GRAIN SIZE - mm.

0.010.1110100


% Sand

Fine Silt

% Fines

0 55 14 21 10

6 in.

3 in.

2 in.

1½

in.

1 in.

¾ in.

½ in.

3/8

in.

#4

#10

#20

#30

#40

#60

#100

#140

#200

12/20/2018


5"3-1/2"2-1/2"

2"1-1/2"3/4"1/2"1/4"#10#40#50#60#100#200

100100100100

8763595145312521139.5

100

55 - 100

25 - 6015 - 455 - 25

0 - 100.0 - 5.0

X

XX

NP NV NP

36.6696 13.8342 5.98880.3961 0.1763 0.0861

160.76 0.13

GP-GM A-1-b

Source of Sample: TP2 - 590' N of Burnside Ave, 8' off SB lane curb; Depth: 4Sample Number: SUBBASE Date:


Atterberg Limits

Coefficients

Classification

Remarks

Figure


East Hartford, CT


Client:




PL= LL= PI=

D85= D60= D50=

D30= D15= D10=

Cu= Cc=

USCS= AASHTO=

*



PE

RC

EN

T F

INE

R

0

10

20

30

40

50

60

70

80

90

100

GRAIN SIZE - mm.

0.010.1110100


% Sand

Fine Silt

% Fines

0 9 23 26 42

6 in.

3 in.

2 in.

1½

in.

1 in.

¾ in.

½ in.

3/8

in.

#4

#10

#20

#30

#40

#60

#100

#140

#200

12/20/2018

silty sand

5"3-1/2"2-1/2"

2"1-1/2"3/4"1/2"1/4"#10#40#50#60#100#200

100100100100100100

9995916859554842

100

55 - 100

25 - 6015 - 455 - 25

0 - 100.0 - 5.0

XXX

XX

NP NV NP

1.0578 0.3155 0.1843

SM A-4(0)

DCP = 5" @ 5 blows;

Mr = 7,621 psi;

Source of Sample: TP2 - 590' N of Burnside Ave, 8' off SB lane curb; Depth: 13Sample Number: SUBGRADE Date:


Atterberg Limits

Coefficients

Classification

Remarks

Figure


East Hartford, CT


Client:


CORE PROFILE

PROJECT NUMBER:

LOCATION: FROM:

DATE SAMPLED: TO:

1 Area: 85' N of Burnside Ave., 4' off NB lane edge of pavement;



1.95'' HMA

1.27'' HMA

HMA

0.06363636 Sandy Gravel0.72 Area: 255' N of Burnside Ave., CL;



1.08'' HMA

2.13'' HMA

2.04'' HMA

0.09590909 Sandy Gravel1.055

3 Area: 340' N of Burnside Ave., 4' off SB lane curb;



1.58'' HMA

1.64'' HMA

2.98'' HMA

0.11439394 Sandy Gravel1.25833333

4 Area: 425' N of Burnside Ave., 6' off NB lane curb;



1.34'' HMA

1.95'' HMA

0.95'' HMA

0.08545455 Deteriorated HMA0.94

CORE#:

CORE#:

CORE#:

CORE#:

42413.01


poor bond b/w layer

1-2,3-4

poor bond b/w layer

1-2

Delmont Road, East Hartford, CT Burnside Avenue

Thursday, December 20, 2018 Maridon Road

ww

w.v

hb

.co

m


Suite 200


P 860.807.4300

F 860.372.4570


\\vhb\gbl\proj\Wethersfield\42413.01\reports\Pavement\Delmont Road\122018 Delmont Rd COREPROF 4-Layers (V2018.03)

CORE PROFILEpage 2

LOCATION: FROM:

DATE SAMPLED: TO:

5 Area: 510' N of Burnside Ave., CL;



1.80'' HMA

1.52'' HMA

0.73'' HMA


6 Area: 680' N of Burnside Ave., 6' off AB lane curb;



1.33'' HMA

1.66'' HMA


CORE#:

CORE#:

poor bond b/w layer

1-2

Delmont Road, East Hartford, CT Burnside Avenue

December 20, 2018 Maridon Road



\\vhb\gbl\proj\Wethersfield\42413.01\reports\Pavement\Delmont Road\122018 Delmont Rd COREPROF 4-Layers (V2018.03)

\\vhb\gbl\proj\Wethersfield\42413.01\reports\Pavement\Maridon Road\030119 Maridon Rd Pavement Design MEMO (2018-01).doc


Suite 200


P 860.807.4300


VHB/Wethersfield

Date: March 1, 2019

Project #: 42413.01

From: Jose Otero

VHB/Project Manager

Re: Maridon Road – East Hartford, CT

Following are the recommendations for the design and construction of Maridon Road from Delmont Road to Vernon

Road.














6. Roadbed soils are AASHTO A-1-b and A-2-4 which are classified as poorly graded silty gravel and silty sand by the

Unified Classification system. The subgrades are fair to good foundations when not subject to frost action, having

a moderate to high frost potential and exhibiting fair to poor drainage characteristics. The roadbed soils in the

eastern half of the roadway are very soft and will not provide structural support.



Delmont Road to Vernon Road:

• The existing pavement structure cross-section consisted of 1.2” to 6.8” (average 3.3”) of hot mix asphalt

(HMA). The granular bases consisted of 4” to 15” of poorly graded gravel and poorly graded silty gravel, with

subbases consisting of 2” of lean clay founded on poorly graded silty gravel and silty sand subgrades.

• Based on the materials evaluation and traffic, this section was found to be structurally adequate.


existing pavement.

Ref: 42413.01

January 24, 2019

Page 2

\\vhb\gbl\proj\Wethersfield\42413.01\reports\Pavement\Maridon Road\030119 Maridon Rd Pavement




pulverization and blending methods to a 9" depth. Compact the recycled

material to proper lines and grades, leaving a minimum of 6" as the new

base course prior to placing 1.5” of Superpave S-0.375” Level 2 as the



#2 20-years REMOVE the existing 3.3” of HMA. Compact to proper lines and grades,

prior to placing 1.5” of Superpave S-0.375” Level 2 as the intermediate

course and 1.5” of Superpave S-0.375” Level 2 as the surface course, with a

tack coat between lifts.

6" Hot Mix Asphalt






TP3 - 146' E of Delmont Rd, 6' off WB lane curb;______________________________________________________________________________________________



860.807.4300

STREET:

CITY, STATE:

Maridon Road - Delmont Road to Vernon Road

East Hartford, CT

TP# / LOCATION:

Description:

slight to moderate

This poorly graded silty gravel is a good to excellent foundation when not subject to frost action, having a moderate

frost potential and exhibiting fair drainage characteristics.

Frost Potential:

PROJECT #: 42413.01



PL= LL= PI=

D85= D60= D50=

D30= D15= D10=

Cu= Cc=

USCS= AASHTO=

*



PE

RC

EN

T F

INE

R

0

10

20

30

40

50

60

70

80

90

100

GRAIN SIZE - mm.

0.010.1110100


% Sand

Fine Silt

% Fines

0 59 19 15 7

6 in

.

3 in

.

2 in

.

1½

in

.

1 in

.

¾ in

.

½ in

.

3/8

in

.

#4

#1

0

#2

0

#3

0

#4

0

#6

0

#1

00

#1

40

#2

00

12/20/2018


5"3-1/2"2-1/2"

2"1-1/2"3/4"1/2"1/4"#10#40#50#60

#100#200

100100100100100

92744841221714

97.2

100

55 - 100

25 - 6015 - 455 - 25

0 - 100.0 - 5.0 X

NP NV NP

15.9350 9.2084 6.92700.6878 0.2702 0.1638

56.23 0.31

GP-GM A-1-a

Source of Sample: TP3 - 146' E of Delmont Rd, 6' off WB lane curb; Depth: 4Sample Number: BASE Date:


Atterberg Limits

Coefficients

Classification

Remarks

Figure

Maridon Road - Delmont Road to Vernon Road 42413.01

East Hartford, CT


Client:




PL= LL= PI=

D85= D60= D50=

D30= D15= D10=

Cu= Cc=

USCS= AASHTO=

*



PE

RC

EN

T F

INE

R

0

10

20

30

40

50

60

70

80

90

100

GRAIN SIZE - mm.

0.010.1110100


% Sand

Fine Silt

% Fines

0 52 24 15 9

6 in

.

3 in

.

2 in

.

1½

in

.

1 in

.

¾ in

.

½ in

.

3/8

in

.

#4

#1

0

#2

0

#3

0

#4

0

#6

0

#1

00

#1

40

#2

00

12/20/2018


5"3-1/2"2-1/2"

2"1-1/2"3/4"1/2"1/4"#10#40#50#60

#100#200

100100100

94947869554824181611

8.5

100

55 - 100

25 - 6015 - 455 - 25

0 - 100.0 - 5.0

X

XX

NP NV NP

25.8753 8.3698 3.35090.5758 0.2258 0.1211

69.12 0.33

GP-GM A-1-a

DCP = 3" @ 5 blows;

Mr = 13,862 psi;

Source of Sample: TP3 - 146' E of Delmont Rd, 6' off WB lane curb; Depth: 20Sample Number: SUBGRADE Date:


Atterberg Limits

Coefficients

Classification

Remarks

Figure


East Hartford, CT


Client:


5" Hot Mix Asphalt

(HMA) [2.5" Deteriorated]


A-1-a

2" sandy lean clay A-4

8" silty sand A-2-4

TP4 - 438' E of Delmont Rd, 6' off EB lane curb;_____________________________________________________________________________________________

STREET:

CITY, STATE:

Maridon Road - Delmont Road to Vernon Road

East Hartford, CT

TP# / LOCATION:

Description:

moderate to high



Frost Potential:

PROJECT #: 42413.01



860.807.4300



PL= LL= PI=

D85= D60= D50=

D30= D15= D10=

Cu= Cc=

USCS= AASHTO=

*



PE

RC

EN

T F

INE

R

0

10

20

30

40

50

60

70

80

90

100

GRAIN SIZE - mm.

0.010.1110100


% Sand

Fine Silt

% Fines

0 65 16 15 4

6 in

.

3 in

.

2 in

.

1½

in

.

1 in

.

¾ in

.

½ in

.

3/8

in

.

#4

#1

0

#2

0

#3

0

#4

0

#6

0

#1

00

#1

40

#2

00

12/20/2018

Grading "A" Gravel

5"3-1/2"2-1/2"

2"1-1/2"3/4"1/2"1/4"#10#40#50#60

#100#200

100100100100

9879604135191413

74.1

100

55 - 100

25 - 6015 - 455 - 25

0 - 100.0 - 5.0

NP NV NP

22.2471 12.7870 9.73910.9507 0.3217 0.1969

64.95 0.36

GP A-1-a

Source of Sample: TP4 - 438' E of Delmont Rd, 6' off EB lane curb; Depth: 15Sample Number: BASE Date:


Atterberg Limits

Coefficients

Classification

Remarks

Figure


East Hartford, CT


Client:




PL= LL= PI=

D85= D60= D50=

D30= D15= D10=

Cu= Cc=

USCS= AASHTO=

*



PE

RC

EN

T F

INE

R

0

10

20

30

40

50

60

70

80

90

100

GRAIN SIZE - mm.

0.010.1110100


% Sand

Fine Silt

% Fines

0 3 10 21 66

6 in

.

3 in

.

2 in

.

1½

in

.

1 in

.

¾ in

.

½ in

.

3/8

in

.

#4

#1

0

#2

0

#3

0

#4

0

#6

0

#1

00

#1

40

#2

00

12/20/2018

sandy lean clay

5"3-1/2"2-1/2"

2"1-1/2"3/4"1/2"1/4"#10#40#50#60

#100#200

100100100100100100

9999978781777066

100

55 - 100

25 - 6015 - 455 - 25

0 - 100.0 - 5.0

XXX

XX

14 23 9

0.3751

CL A-4

Source of Sample: TP4 - 438' E of Delmont Rd, 6' off EB lane curb; Depth: 2Sample Number: SUBBASE Date:


Atterberg Limits

Coefficients

Classification

Remarks

Figure


East Hartford, CT


Client:




PL= LL= PI=

D85= D60= D50=

D30= D15= D10=

Cu= Cc=

USCS= AASHTO=

*



PE

RC

EN

T F

INE

R

0

10

20

30

40

50

60

70

80

90

100

GRAIN SIZE - mm.

0.010.1110100


% Sand

Fine Silt

% Fines

0 2 16 65 17

6 in

.

3 in

.

2 in

.

1½

in

.

1 in

.

¾ in

.

½ in

.

3/8

in

.

#4

#1

0

#2

0

#3

0

#4

0

#6

0

#1

00

#1

40

#2

00

12/20/2018

silty sand

5"3-1/2"2-1/2"

2"1-1/2"3/4"1/2"1/4"#10#40#50#60

#100#200

100100100100100100100100

988265532917

100

55 - 100

25 - 6015 - 455 - 25

0 - 100.0 - 5.0

XXX

XX

NP NV NP

0.5080 0.2767 0.23780.1552

SM A-2-4

DCP = 15" @ 5 blows;

Mr = 1,868 psi;

Source of Sample: TP4 - 438' E of Delmont Rd, 6' off EB lane curb; Depth: 8Sample Number: SUBGRADE Date:


Atterberg Limits

Coefficients

Classification

Remarks

Figure


East Hartford, CT


Client:


CORE PROFILE

PROJECT NUMBER:

LOCATION: FROM:

DATE SAMPLED: TO:

7 Area: 73' E of Delmont Rd, 4' off EB lane curb;



1.42'' HMA

2.95'' HMA



8 Area: 219' E of Delmont Rd, 8' off EB lane curb;





9 Area: 292' E of Delmont Rd, CL;



0.03636364 Processed Aggregate0.410 Area: 365' E of Delmont Rd, 8' off WB lane curb;





CORE#:

CORE#:

CORE#:

CORE#:

42413.01


poor bond b/w

layers 1-2

Maridon Road, East Hartford, CT Delmont Road

Thursday, December 20, 2018 Vernon Road

poor bond b/w

layers 1-2

ww

w.v

hb

.co

m


Suite 200


P 860.807.4300

F 860.372.4570


\\vhb\gbl\proj\Wethersfield\42413.01\reports\Pavement\Maridon Road\122018 Maridon Rd COREPROF 4-Layers (V2018.03)

CORE PROFILEpage 2

LOCATION: FROM:

DATE SAMPLED: TO:

11 Area: 551' E of Delmont Rd, 4' off WB lane curb;




CORE#:

Maridon Road, East Hartford, CT Delmont Road

December 20, 2018 Vernon Road


\\vhb\gbl\proj\Wethersfield\42413.01\reports\Pavement\Maridon Road\122018 Maridon Rd COREPROF 4-Layers (V2018.03)

\\vhb\gbl\proj\Wethersfield\42413.01\reports\Pavement\Vernon Road\022219 Vernon Rd Pavement Design MEMO (2018-01).doc


Suite 200


P 860.807.4300


VHB/Wethersfield

Date: March 29, 2019

Project #: 42413.01

From: Jose Otero

VHB/Project Manager

Re: Vernon Road – East Hartford, CT

Following are the recommendations for the design and construction of Vernon Road from Burnside Avenue to

Maridon Road.








3. The distress level investigation results indicate there is severe potholes and alligator cracking, as well as moderate






6. Roadbed soils are AASHTO A-4 and A-2-4 which are classified as lean clay and silty sand by the Unified

Classification system. The subgrades fair to poor foundations when not subject to frost action, having a moderate

to high frost potential and exhibiting fair to poor drainage characteristics. The roadbed soils will provide some

level of structural support.




• The existing pavement structure cross-section consisted of 1.0” to 4.1” (average 3.1”) of hot mix asphalt (HMA)

over approximately 2” of deteriorated HMA. The granular bases consisted of 11” to 16” of poorly graded and

well graded silty gravel, with 6” of silty sand subbase, founded on lean clay and silty sand subgrades.

• Based on the materials evaluation and traffic, this section was found to be structurally inadequate, requiring a

1.0” overlay to meet the Elastic Layer Design, which is NOT recommended.

• Six monitoring wells were installed in January of 2019 because of the presence of high groundwater in test

pits. Groundwater rose as high as 17” from existing pavement elevation in the northern most monitoring well.

Underdrains are recommended at least in the north half of Vernon Road to prevent premature failure of the

roadway base after reclaim or repair.

Ref: 42413.01

March 29, 2019

Page 2

\\vhb\gbl\proj\Wethersfield\42413.01\reports\Pavement\Vernon Road\022219 Vernon Rd Pavement



existing pavement.



pulverization and blending methods to a 9" depth. INSTALL

UNDERDRAINS. Compact the recycled material to proper lines and grades,

leaving a minimum of 6" as the new base course prior to placing 1.5” of

Superpave S-0.375” Level 2 as the intermediate course and 1.5” of

Superpave S-0.375” Level 2 as the surface course, with a tack coat between

lifts.

#2 20-years RECONSTRUCT the existing HMA and poorly graded gravel bases by

removing them to a 9” depth. INSTALL UNDERDRAINS. Compact the silty

sand subbase to proper lines and grades prior to placing 6” of processed



Level 2 as the surface course, with a tack coat between lifts

#3 20-years REMOVE the existing 5.1” of HMA and deteriorated HMA. INSTALL

UNDERDRAINS. Place 2.1” of “fine” processed aggregate. Compact to

proper lines and grades, prior to placing 1.5” of Superpave S-0.375” Level

2 as the intermediate course and 1.5” of Superpave S-0.375” Level 2 as the

surface course, with a tack coat between lifts.

3.5" Hot Mix Asphalt

(HMA) [2.5" Deteriorated]


with silt A-1-a


A-2-4

9.5" lean clay with sand

A-4

TP5 - 206' S of Maridon Rd, 6' off NB lane curb;______________________________________________________________________________________________



860.807.4300

STREET:

CITY, STATE:

Vernon Road - Maridon Road to Burnside Avenue

East Hartford, CT

TP# / LOCATION:

Description:

high

This lean clay is a poor foundation when not subject to frost action, having a high frost potential and exhibiting poor

to impervious drainage characteristics.

Frost Potential:

PROJECT #: 42413.01



PL= LL= PI=

D85= D60= D50=

D30= D15= D10=

Cu= Cc=

USCS= AASHTO=

*



PE

RC

EN

T F

INE

R

0

10

20

30

40

50

60

70

80

90

100

GRAIN SIZE - mm.

0.010.1110100


% Sand

Fine Silt

% Fines

0 68 14 13 5

6 in

.

3 in

.

2 in

.

1½

in

.

1 in

.

¾ in

.

½ in

.

3/8

in

.

#4

#1

0

#2

0

#3

0

#4

0

#6

0

#1

00

#1

40

#2

00

12/20/2018

Grading "A" Gravel with silt

5"3-1/2"2-1/2"

2"1-1/2"3/4"1/2"1/4"#10#40#50#60

#100#200

100100100100

8357513732181413

85.4

100

55 - 100

25 - 6015 - 455 - 25

0 - 100.0 - 5.0 X

NP NV NP

39.0119 21.6312 12.24811.4241 0.3395 0.1830

118.21 0.51

GP-GM A-1-a

Source of Sample: TP5 - 206' S of Maridon Rd, 6' off NB lane curb; Depth: 11Sample Number: BASE Date:


Atterberg Limits

Coefficients

Classification

Remarks

Figure

Vernon Road - Maridon Road to Burnside Avenue 42413.01

East Hartford, CT


Client:




PL= LL= PI=

D85= D60= D50=

D30= D15= D10=

Cu= Cc=

USCS= AASHTO=

*



PE

RC

EN

T F

INE

R

0

10

20

30

40

50

60

70

80

90

100

GRAIN SIZE - mm.

0.010.1110100


% Sand

Fine Silt

% Fines

0 29 22 22 27

6 in

.

3 in

.

2 in

.

1½

in

.

1 in

.

¾ in

.

½ in

.

3/8

in

.

#4

#1

0

#2

0

#3

0

#4

0

#6

0

#1

00

#1

40

#2

00

12/20/2018


5"3-1/2"2-1/2"

2"1-1/2"3/4"1/2"1/4"#10#40#50#60

#100#200

100100100100100

938779714940373027

100

55 - 100

25 - 6015 - 455 - 25

0 - 100.0 - 5.0

XXX

XX

NP NV NP

11.1940 0.7669 0.45280.1414

SM A-2-4

Source of Sample: TP5 - 206' S of Maridon Rd, 6' off NB lane curb; Depth: 6Sample Number: SUBBASE Date:


Atterberg Limits

Coefficients

Classification

Remarks

Figure


East Hartford, CT


Client:




PL= LL= PI=

D85= D60= D50=

D30= D15= D10=

Cu= Cc=

USCS= AASHTO=

*



PE

RC

EN

T F

INE

R

0

10

20

30

40

50

60

70

80

90

100

GRAIN SIZE - mm.

0.010.1110100


% Sand

Fine Silt

% Fines

0 7 7 10 76

6 in

.

3 in

.

2 in

.

1½

in

.

1 in

.

¾ in

.

½ in

.

3/8

in

.

#4

#1

0

#2

0

#3

0

#4

0

#6

0

#1

00

#1

40

#2

00

12/20/2018

lean clay with sand

5"3-1/2"2-1/2"

2"1-1/2"3/4"1/2"1/4"#10#40#50#60

#100#200

100100100100100

989796938683837976

100

55 - 100

25 - 6015 - 455 - 25

0 - 100.0 - 5.0

XXX

XX

14 24 10

0.3959

CL A-4

DCP = 4" @ 5 blows;

Mr = 10,141 psi;

Source of Sample: TP5 - 206' S of Maridon Rd, 6' off NB lane curb; Depth: 9.5Sample Number: SUBGRADE Date:


Atterberg Limits

Coefficients

Classification

Remarks

Figure


East Hartford, CT


Client:


4" Hot Mix Asphalt

(HMA)


with silt A-1-a


A-2-4

TP6 - 721' S of Maridon Rd, 6' off SB lane curb;_____________________________________________________________________________________________

STREET:

CITY, STATE:

Vernon Road - Maridon Road to Burnside Avenue

East Hartford, CT

TP# / LOCATION:

Description:

moderate to high



Frost Potential:

PROJECT #: 42413.01



860.807.4300



PL= LL= PI=

D85= D60= D50=

D30= D15= D10=

Cu= Cc=

USCS= AASHTO=

*



PE

RC

EN

T F

INE

R

0

10

20

30

40

50

60

70

80

90

100

GRAIN SIZE - mm.

0.010.1110100


% Sand

Fine Silt

% Fines

0 71 11 12 6

6 in

.

3 in

.

2 in

.

1½

in

.

1 in

.

¾ in

.

½ in

.

3/8

in

.

#4

#1

0

#2

0

#3

0

#4

0

#6

0

#1

00

#1

40

#2

00

12/20/2018

Grading "A" Gravel with silt

5"3-1/2"2-1/2"

2"1-1/2"3/4"1/2"1/4"#10#40#50#60

#100#200

100100100

947849433429181513

95.9

100

55 - 100

25 - 6015 - 455 - 25

0 - 100.0 - 5.0 X

NP NV NP

42.8480 26.2898 19.54163.0320 0.3062 0.1785

147.27 1.96

GW-GM A-1-a

Source of Sample: TP6 - 721' S of Maridon Rd, 6' off SB lane curb; Depth: 16Sample Number: BASE Date:


Atterberg Limits

Coefficients

Classification

Remarks

Figure


East Hartford, CT


Client:




PL= LL= PI=

D85= D60= D50=

D30= D15= D10=

Cu= Cc=

USCS= AASHTO=

*



PE

RC

EN

T F

INE

R

0

10

20

30

40

50

60

70

80

90

100

GRAIN SIZE - mm.

0.010.1110100


% Sand

Fine Silt

% Fines

0 37 19 16 28

6 in

.

3 in

.

2 in

.

1½

in

.

1 in

.

¾ in

.

½ in

.

3/8

in

.

#4

#1

0

#2

0

#3

0

#4

0

#6

0

#1

00

#1

40

#2

00

12/20/2018


5"3-1/2"2-1/2"

2"1-1/2"3/4"1/2"1/4"#10#40#50#60

#100#200

100100100100

96878377634440403428

100

55 - 100

25 - 6015 - 455 - 25

0 - 100.0 - 5.0

XXX

XX

NP NV NP

15.0579 1.5328 0.68010.0990

SM A-2-4(0)

DCP = 1" @ 5 blows;

Mr = 30,466 psi;

Sample checked for plasticity and found non-plastic

Source of Sample: TP6 - 721' S of Maridon Rd, 6' off SB lane curb; Depth: 10Sample Number: SUBGRADE Date:


Atterberg Limits

Coefficients

Classification

Remarks

Figure


East Hartford, CT


Client:


CORE PROFILE

PROJECT NUMBER:

LOCATION: FROM:

DATE SAMPLED: TO:

12 Area: 103' S of Maridon Rd, 4' off SB lane curb;



0.76'' HMA

1.78'' HMA

0.04681818 Processed Aggregate0.51513 Area: 309' S of Maridon Rd, 8' off SB lane curb;



0.53'' HMA

2.61'' HMA


14 Area: 412' S of Maridon Rd, CL;



1.12'' HMA


0.03727273 Processed Aggregate0.4115 Area: 515' S of Maridon Rd, 8' off NB lane curb;



0.93'' HMA



CORE#:

CORE#:

CORE#:

CORE#:

42413.00


Vernon Road, East Hartford, CT Maridon Road

Thursday, December 20, 2018 Burnside Road

poor bond b/w all

layers

ww

w.v

hb

.co

m


Suite 200


P 860.807.4300

F 860.372.4570


\\vhb\gbl\proj\Wethersfield\42413.01\reports\Pavement\Vernon Road\122018 Vernon Rd COREPROF 4-Layers (V2018.03)

CORE PROFILEpage 2

LOCATION: FROM:

DATE SAMPLED: TO:

16 Area: 618' S of Maridon Rd, 4' off NB lane curb;



2.09'' HMA


0.06272727 Processed Aggregate0.6917 Area: 824' S of Maridon Rd, 4' off SB lane curb;



1.60'' HMA


18 Area: 927' S of Maridon Rd, CL;



2.06'' HMA

1.60'' HMA


CORE#:

CORE#:

CORE#:

poor bond b/w

layers 2-3

poor bond

poor bond b/w

layers 2-3

Vernon Road, East Hartford, CT Maridon Road

December 20, 2018 Burnside Road




\\vhb\gbl\proj\Wethersfield\42413.01\reports\Pavement\Vernon Road\122018 Vernon Rd COREPROF 4-Layers (V2018.03)

delmont road neighborhood roadway improvements project

Documents