Geotechnical Information for FM78 and Lakeview

1 boring made at 15 feet below surface

Description

Approximate

Depth of

Stratum (feet)

Material Encountered Consitency

/Density

- 0 to 1/2

1 1/2 inches of Asphalt over 4 inches of

Crushed Limestone Base Material -

Stratum I 1/2 to 1

Fill - LEAN CLAY (CL); dark brown and brown

mottled Stiff

Stratum II 1 to 7 CLAY (CH); dark brown Stiff to Very Stiff

Stratum III 7 to 15

CLAY (CH); yellowish brown and gray with

gypsum crystals Stiff to Very Stiff

Approximately 3 feet of clay should be removed and replaced with select fill

These conditions will satisfy a Condition C Foundation

*Note: Sample was taken less than 1000 feet away. This is the reason for the initial layer of asphalt in the boring sample.

Subsurface Information

Existing

Lean Clay Clay

Volumetric Changes moderate high

Plasticity Index (PI) 26% 35% to 54%

In-situ moisture content 3% 1% to 7%

SPT "N" Values 11 blows for 12"

penetration

10 to 25 blows for

12" penetration

Foundation Considerations

Shallow Strip Footings

Item Description

Bearing Stratum Select fill

Minimum embedment below final grade 24 inches below final grade

Bearing pressures Net allowable total load - 2,000 psf

Approximate total settlement 1 inch

Estimated approximate differential settlement 1/2 to 3/4 inch

Allowable passive resistance 1,000 psf per foot of depth

Coefficient of sliding friction 0.4

Uplift Resistance Foundation Weight (150 pcf) & Soil Weight (120 pcf)

Pavement Design Information

Flexible Pavement System

Component

Material Thickness (inches)

Parking Area Driveway

Asphalt (Type D HMAC) 1.5 2

Crushed limestone base 9 10

Moisture conditioned subgrade 6 6

Parameter Asphalt

Reliability (%) 70

Standard Deviation 0.45

Initial Serviceability Index 4.2

Terminal Serviceability Index 2

Design life of 10 years

2,000 ESAL per year in driveway areas

1,000 ESAL per year in parking areas

Porous Paver Information

Purchased from Belgard Company, Aqua-Roc Porous Paver will be used.

Component

Material

Thickness

(in.)

Vehicular Paver 3.15

#8 Aggregate 2

#57 Aggregate 6

#2 Subbase Aggregate 6

To be used in parking stalls, as well as parking lot walkways for foot trafic.

This material will support the stormwater runoff design.

Stormwater runoff will flow under the parking lot to a system of pipes, which will direct the water to a nearby

sewer easement.

This material will also give benefit to our LEED certification goals, and also meets ADA requirements

Asphalt Paving for Parking Areas, Assembly Costs

A vehicular porous paver will be purchased from manufacturer Belgard and used in the parking

stall areas, as well as foot traffic walkways.

For our required dimensions, a purchase price estimate including base aggregates and labor

was given to be roughly $7 per square foot.

Cost

Driveway

Parking Lot

3076 SY

24937 SF

55.98 Cost/SY

7 Cost/SF

172194 Cost

174559 Cost

Total

Cost 346753.5

Parking Lot Pricing

Asphalt Paving for Roadways, Assembly Costs

Craft@Hrs Unit Material Labor Equipment Total

Fine grading and compact

existing subbase P5@.066 SY 0.01 2.89 2.69 5.59

Stone aggregate base,

Class 2, 10" thick P5@.02 SY 8.35 2.2 2.05 12.6

Binder course 2" thick (9

SY per ton) P5@.039 SY 11.3 1.71 1.59 14.6

Rubberized asphalt

interlayer P5@.005 SY 1.28 0.22 0.2 1.7

Wear course 2" thick (9 SY

per ton) P5@.039 SY 11.8 1.71 1.59 15.1

Tar emulsion protective

seal coat P5@.034 SY 3.51 1.49 1.39 6.39

Total estimated cost for typical 10' wide roadway, 4" paving over 4" aggregate base

Cost per SY of roadway P5@.203 SY 31.24 8.9 8.28 55.98

On-site roadway, with 10" thick aggregate base, 2" thick asphalt binder course, rubberized

asphalt interlayer, and 2" thick wear course.

All black areas will be made up of asphalt pavement as designed in the previous pages. The grey

sections, including the parking stalls and the walkways, will be made up of the aforementioned porous

paver.