Shadowridge P4-CS 891219Schrickel, Rollins and Associates,
Landscape Architecture · Planning · Engineering
December 19, 1989
Mr. Russell Doyle, P.E.
Engineering
City of Coppell
P.O. Box 478
Coppell, Texas 75019
RE: Shadow Ridge Estates
Fourth Increment
Inc.
Victor W. Baxter, ASIA
/]j2_.gl,,ilO,~ff Kent E. Besley, ASIA
~ [.-/bv-x~Fr~' Terry T. Chee[, ASLA
Terry E. Cullender
44t..~ 4n-xlt~_~ DinoJ. Ferralli, PE
', ,~ i/.1~ Daniel B. Hartman, PE
~ '~ ,,~.~A~--y~_ Mark C. Hatchel, ASLA
~ ~ ~.,T~ ~/ o~" ~rjHershel Lindly, APA
~ ~1"' .,~ ~. Etlr~AIl~nW. Rollins, PE
/-~ r4 st ~,~ ~ ~/ Gene Schrickel, FASLA
/~t~ T.~ ~./4 I'~ 5/ Larry D. Stone, PE
Dear Mr. Doyle
It was brought to my attention that a portion of the 30-inch RCP culvert under the aney at Bethel School
Road has experienced some settlement. The developer has requested that we evaluate the situation and
reccomend a solution other than reconstuction.
The two interior joints have settled approximately 6 inches. The invert of the pipe can be grouted to
re-establish a positive 0.5 % grade across the culvert. The addition of this grout will reduce the effective
area of the pipe by only 15%. Since the culvert is functioning under inlet control conditions an additional
6 inches in headwater (which is available) will convey the same amount of flow as originally intended.
This addition of grout will also seal the partially open joint stopping any seepage of water into the
embedment material.
I feel that this corrective measure will result in a culvert that will function properly under present
conditions. It should be noted that this is a somewhat temporary stucture and when Bethel School Road
is improved this culvert will be removed.
I have attached a sketch showing the profile of the culvert and a section of the pipe.
I am confident that this solution will meet with your satisfaction. Thank you for your attention in this
matter.
Yours Truly
SCHRICKEL, ROLLINS AND ASSOCIATES, INC.
Sanford LaHue
CC
Steve Stolte, Centex Real Estate Corp.
Larry Davis, Construction Inspector
Pat Crawford, Crawford Utilities
1161 Corporate Drive West · Suite 200 · Arlington, Texas 76006 · (817) 649-3216/Metro 640-8212