ST9605-CS 980327 214 651 8428
M~R ~7 · ~8 11: O~AM RUST -- ~ CHL I TER×JAMESON P. i/6
~ Rust Environment ,ff,,: Infrastructure Fax Transmittal
1420 W. Mockingbird Ln., #300 Phone (214) 630-8867
· Dallas, Texas 75247-4906 Fax (214) 631-8428
Company _d/r? ~F
City/State:
From: ~ ~,~
Job/Project No:
Total Pages Including ~is Page:
Colnmcnts;
tn case of transmission problems, please call: (214) 630-8867
l~,cv 4195 I:014,JOeneral
MAR 27 '98 11:0gAM RU~T ~H~T~R/J~OH _ P,~/6
LICHLITER/JAMESON
E,~,i,v~,ne~ e~ l~re 1420 W. Mockingb~e~ ~ne, 5u~e 300
Td. f21~ ~30-8~67
F~ (214) 631-8~28
~fiday, March 27, 1~0~
~simnt Ci~ Engineer ~ ~ ~
C~ of ~ppell - Engineering
P,O. Box 478
Coppelt, Te~ 75019-4409
United ~tes of Amed~
Dear Michael A. Martin,
Mike as per our conversation of Thursday, March 26~ I am faxing this letter and drainage calculations
pertaining to the redesign of Inlets E-4 & E-5, 21" R.C.P. Laterals A & B for the North Point Ddve
Extension Storm Drainage System.
I propose to change the last joint of both Laterals A & B from 21" R,C,P. with 18" R.C.P., raise the Top
of Inlet Elevation by a minimum of 0.5' and also adjust the Paving Grades to conform to ?he City of
Coppell minimum requirements.
MAR ~7 '~ 11:~RM RU$T L~CHLITER/JRMESOH P.9×6
OO
'MaR Z? '98 li.'03AM RUST LICHLTTER×3AMESON P,4/6
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~ HW ENTRANCE
- 40 ' O SGAL~ TYPE ~ --I.O
~0 42) G,oe,e e~d .l*k
HEADWATER DEPTH FOR'
CONCRETE PIPE CULVERTS
WITH INLET CONTROL
BRIDGE OIVlSION HYDRAULIC MANUAL 12-95
11:0BAM RUST _LICHLITER/J~ME$OM
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144 5,000
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~ HEADWATER DEPTH FOR
CONCRETE PIPE CULVERTS
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BRIDGE DIVISION HYORAULIC ~4ANUAL 12-85
(17)
MAR 27 '98 11:03AM RUST LICHLITER×JAMESOM P.6×6