ST9301-CS030109r
SEI
Consulting Engineers
Scarborough Engineering, Inc.
3129 Handley Dr. Fort Worth, TX 76112
January 9, 2003
Mr. Ken Griffin, P.E.
Director of Engineering/Public Works
P.O. Box 478
Coppell, TX 75019
7
Subject: Sandy Lake Road Improvements
13 8k Electric Transmission Line Conflict
Oncor Line: Liggett- Collin, Dwg TD30507, Sh 13
Dear Mr. Griffin,
817 -451 -6687
817 -451 -0476 Fax
We have completed our research and review of the electric line crossing in the vicinity of
Sandy Lake Road, Sta. 48 + 49. The west bottom phase conductor calculates to be 21.5
feet above the proposed north curb. The line should be raised 1.5 feet, or the street
lowered 1.5 feet. The minimum required clearance is 22 feet. I recommend a target
design clearance of 23 feet to allow for construction tolerances and the dynamics of the
conductor.
Our reduced survey data and calculation spreadsheet is attached.
Yours truly,
��S . �toxuoK�
Jon D. Scarborough, P.E.
Enclosures
cw: Bryan Williams, P.E.
Don Snow
JDS/ld
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ONCOR TRANSMISSION
LIGGETT - COLLIN 138kV
SANDY LAKE ROAD
STRUCTURE 1215
WA 02T61034
ESTIMATE
1/14/2003
Subtotals Totals
Steel Tower Section w /Stubs
$2,829
Remainder of Material
$1,500
Sales Tax
$357
Purchasing & Stores
$205
Total Material Costs $4,891
Engineering
$6,000
TU Labor
$615
Non - Productive Time Clearing
$0
Payroll Overhead
$0
Transportation
$0
Contract Labor
$45,000
Tower Concrete
$0
Pole Concrete
$0
Reber Installation
$0
Tower Erection
$0
Damages
$2,000
Environmental Study
$0
Surveying
$2,000
Clearing
$0
Mobilization
$0
Inspection Services
$1,000
Concrete Testing
$0
Labor Sales Tax
$0
Labor Contingency
$0
Total Labor Costs $56,615
Construction Overhead $6,151
Removal Cost $0
Salvage $0
Total Chargable to WA $67,657
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