ST9902-LR130828 (3)ALLIANCE GEOTECHNICAL GROUP
CONSULTING ENGINEERING * GEOTECHNICAL ENGINEERING * CONSTRUCTION MATERIALS
3228 Halifax Street, Suite A, Dallas, Texas 75247 Phone :972- 444 -8889 Fax: 972 - 444 -8893
DRILLED PIER INSPECTION REPORT
CLIENT: City of Coppell
PROJECT: West Sandy Lake Road Improvements
AGG REPORT #: C13- 0634 - 150690 -1
REPORT DATE: 08128/2013
DISTRIBUTION:
INSPECTOR/DATE: D. Roberts 8/26/2013
DRILLING COMPANY: Texas Shafts
BUILDING:
Paae 1 of 1
REMARKS: *Less than 1 inch of water present in pier at time of concrete placement.
ALLIANCE GEOTECHNICAL GROUP
* An approximate 5' thick hard gray shale layer exists above the very hard gray sandy shale. DO NOT START PENETRATION UNTIL
VERY HARD GRAY SANDY SHALE IS ENCOUNTERED.
Pier Location (grid lines)
1J
Design Shaft Diameter
Winches
Design Penetration
5 feet
Elevation of Top of Pier
479.75 feet
Ground Elevation
481.03 feet
Actual Shaft Diameter
Winches
Depth to Bearing Stratum
(Very Hard Gray Sandy Shale)*
38.7 feet
Required Pier Depth
43.70 feet
Actual Pier Depth
47.97 feet
Actual Pier Penetration
9.27 feet
Elevation of Top of Bearing Stratum
442.33 feet
Elevation of Bottom of Pier
433.06 feet
Pier Location within Tolerance
yes
Pier Plumb within Specifications
yes
Casing Required
yes
Length of Casing
32.4 feet
Depth to Top of Casing
0.0 feet
Depth to Bottom of Casing
32.4 feet
Depth Required Due to Casing
N/A
Water Present in Hole at Concrete Pour
Pier Bottom Clean
yes
Vertical Bars (number & Size)
10 #9
Horizontal Ties (Size & Spacing)
#3 @6"
Steel Cage Diameter
30 inches
Length of Steel Cage
47.6 feet
Concrete Placed in Center of Pier Hole with
a Hopper or Inverted Chute
Inverted Chute
REMARKS: *Less than 1 inch of water present in pier at time of concrete placement.
ALLIANCE GEOTECHNICAL GROUP
* An approximate 5' thick hard gray shale layer exists above the very hard gray sandy shale. DO NOT START PENETRATION UNTIL
VERY HARD GRAY SANDY SHALE IS ENCOUNTERED.