ST8201-CS 891221COPPgLL PUBLIC NORKS
MI~0RANDIJM
December 2~, ~989
TO:
FROM:
RE:
Russell Doyle, City Engineer
Steve Goram, Director of Public Works
Sight Distance Problems Associated
Improvements
with Denton Tap
As discussed at the staff meeting this date, you will contact
Dale Jackson and advise him of our position which we have
determined is most appropriate in addressing the signage, etc.
on Denton Tap which were affected by the Denton Tap Road
improvements.
You will then follow-up immediately with a memorandum on this
same day, contents being the gest of your conversation with
him.
Please provide me with a copy of the memorandum once sent.
RRD/sm
COPPELL PUBLIC ~01~
~MOI~NDU~
December 27, 1989
To:
From:
Re:
Dale Jackson, .B~ilding Official
Russell Doy ty Engineer
Denton Tap ~-Road Commercial Sign
Obstructed Sight Distances
Relocation Due to
As we discussed this a.m.,
subjected signs relocated
December 12, 1989.
you will be following up and getting
per the City Council direction on
Please let me know if you need any assistance during the laying out
of the new signs. The 45 foot angle and the attached are our
design criteria.
RRD/ymh
VEHICLE IN LANE
NEAREST INTERSECTIi
GRADE APPROACHING
INTERSECTION
LINE OF SIGHT
IN LANE NEAREST
APPROACHING TRAFFIC,
FAR SIDE
G~AD[ APPROACHING
INTERSECTION
INTERSECTION LINE
NEAR SIDE
VEHICLE IN LANE~
NEAREST APF~OACHING
TRAFFIC.
SIGHT DISTANCE AT INTERSECTIONS
USE WITH TABLE 6
FIGURE 6
d. Intersection Grades
The grade of an intersecting street with the principal street
gutter should not be generally more than four (4) percent either
up or down within the first twenty (20) feet beyond the curb line
of the principal street except that in very hilly terrain a maximum
intersecting grade of six (6) percent can be considered. Grade
changes of one (1) percent or more require vertical curves.
3.06 SIGHT D~STANCE AT INTERSECTIONS
An important consideration in the design of city streets and thorough-
fares is the vehicle attempting to cross the street or thoroughfare from the
side street or drive. The operator of the vehicle attempting to cross should
have an unobstructed view of the whole intersection and a length of the
thoroughfare to be crossed sufficient to permit control of the vehicle to
avoid collisions. The minimum sight distance considered safe under various
assumptions of physical conditions and driver behavior is related directly
to vehicle speeds and to the resultant distance traversed during perception
and reaction time and during braking. This sight distance, which is termed
intersection sight distance, can be calculated for different street or thorough-
fare widths and for various grades upwards and downwards. Recommended inter-
section sight distances are shown in Table 6. Figure 6 shows the method for
measuring the intersection sight distance.
-27-
TABLE 6
SIGHT DISTANCES
(SEE FIGURE 6)
DESIGN STOPPING SIGHT INTERSECTION SIGHT DISTANCE -- (FEET)
PAVEMENT
DISTANCE (FEET) NEAR SIDE FAR SIDE
SPEED WIDTH
MINIMUM DESIRABLE MINIMUM DESIRABLE MINIMUM DESIRABLE
25 150 200 26~ 150 220 150 260
30 200 200 26~ 200 260 200 $00
36' 200 275 220 3 I0
40' 240 325 270 370
:55 240 2:50 44' 240 330 27,5 375
2 - 22' 240 330 305 410
3:3' 2:75 :350 280 400
40 275 300 44~ 275 350 305 425
2- :35' 280 400 400 520
45 ;.'515 $ 75 2 - 3:3' 320 450 450 580
FOR DISTANCE ADJUSTMENTS DUE TO GRADE
OF STREET USE TABLE 7.'
TABLE 7
SIGHT DISTANCE ADJUSTMENTS DUE TO GRADE
UPGRADES DOWNGRADES
(DECREASE) (INCREASE)
DESIGN SPEED 5 6 I03 6 I0
25 5 I0 15 5 15 25
50 I0 15 20 I0 20 50
55 15 20 I 5 2_.5
40 20 2_.5 20 35
45 25 30 2.5 50
GRADES - PERCENT
ADJUSTMENTS-FEET
GINN, INC.
CONSULT
Date:
December 7, 1989
To:
From:
Subject:
Steve Goram, Director of Public Works
John C. Karlsruher, P.E. ~. ~
Denton Tap Road Improvements from Belt Line Road to
Sandy Lake Road - Traffic Visibility/Signage on
Adjacent Properties
Mr. Russell Doyle called this morning with regard to an effort on
the City's part to identify signs which may cause visibility
problems for traffic on and attempting to enter Denton Tap Road.
He requested that we furnish information regarding our previous
efforts at dealing with property owners concerning possible
relocation of signs which may inhibit visibility of those on or
entering the roadway.
The only property owner with whom we actually discussed
relocation of a sign was Mr. Ronald Van Ness of Denton Tap
Properties. During the early phase of construction we had some
concerns regarding the directory sign at 500 S. Denton Tap. We
contacted Mr. Van Ness and discussed the possibility that the
sign may need to be relocated to allow proper visibility once the
roadway was constructed. Mr. Van Ness was concerned that the
relocation of the existing sign to a new location might violate
the City's Sign Ordinance. Our office discussed the
technicalities of the sign relocation with Mr. Dale Jackson of
the City of Coppell.
We subsequently sought a price from the property owner and the
Contractor for the Denton Tap Road project for relocation of the
sign should it be deemed necessary. The property owner got a
price of $3,000.00 plus tax for the relocation. The Contractor
commented that the price quoted by the property owner was a fair
price for the work and declined to furnish a price to do the work.
We met with Mr. Van Ness on several occasions and discussed the
sign, but felt it to be prudent to postpone any action on the
sign relocation until the paving of the adjacent lanes was
complete and we had a chance to review the situation. Once the
paving of the adjacent roadway and the property's two driveways
was complete, we made several visits to view the situation and
concluded that there was not a serious problem with visibility
and therefore it did not warrant the expenditure of the City's
funds to relocate the sign. We communicated this to the property
owner and he was satisfied with our finding.
17103 Preston Road · Suite 100 · LB 118 · Dallas, Texas 75248 · Phone 214/248-4900
· ' ~_ City Council Meeting
Minutes of November 14, 1989
This concluded the student participation.
After a short break, the City Council meeting then resumed.
Item 17: Regular Session Hay,frs Report.
Mayor Wolfe provided the follo~rlng information:
Gary Sieb, Director of Plannin$ and Co,unity Services, spoke
before the Council and indicated that the process for approval
of zoning items will be changed. Hr. Sieb stated that
variance requests that pertain to the Subdivision Ordinance
should be approved by the City Council ~hile variance requests
pertaining to the Zoning Ordinance, other than PD or SUP
zoning classifications should be forwarded to the Board of
Adjustment for consideration.
Bo
Mayor Wolfe brought to the Council's attention a letter from
Dr. Bill Stearman in response to a mail out to the citizens of
Coppell. Hayor Wolfe informed the Council of the status and
concerns on this committee~s approach to the training facility
for Texas A&M Extension Services, and stated that he had
requested that his name, aa a member of this Board, be
withdra~n e, there will be no possible conflict with the
upcoming bond proposal.
Councilman Thomas requested that a standing item be placed on
future agendas concerning the Concession Stand at Brown Park,
and the completion of Denton Tap Road. Under this item, City
Attorney Larry Jackson informed the Council that three (3)
bids are in the process of being secured at this time.
Councilman Cowman also indicated that he felt that there were
major problems with the business signs along Denton Tap Road
and asked that the City
of relocating the signs
the O~raers would be
relocations. Councilman
that special enforcement
vehicles are speeding on
Manager have staff research the cost
and determining whether the City or
responsible for paying for the
Morton also requested under this item
on Beltline Road South be provided as
this portion of Beltline Road.
Do
Mayor Pro Tam Wilkerson requested that a standing item be
placed on future Council Agendas concerning the status of the
land swap for the future Library site.
Councilman Thomas requested a status report on the Lesley
Lawsuit. City Manager Alan Ratliff informed Council that the
City Attorney will he providing a complete report on all
lawsuits at the December 12, 1989 City Council Meeting.
Hayor Wolfe requested that a report be provided at the
December 12, 1989 City Council meeting concerning the bridge
on North MacArthur Boulevard and the right-of-way for building
this bridge.
Councilman Thomas also requested ,a status report on the
changing of the City% Logo.
Councilman Co~an informed the Council that the Varsity Girls
Volleyball Team will be competing in the State Tournament on
November 17 and 18, 1989, and requested that the Mayor send a
letter to this team in recognition of their accomplishments.
Item 18:
A.
City Council Liaison Report.
ARCHITECTURAL REVIE~ CO~ITTEE - There was no report at this
time.
CHAHBER OF COHNERCE - Councilman Co,maCerated thor a formal
Page 5 of 11
pressnt and statsd that the business ovners would be notified prior to
moving of thsse signs. Councilman Thomas requestad that staff approach
FDIC about taking do~n the sign in front of the old Metropolitan Bank
Building. Following discussion on this item, Councilman Cowman moved to
$6,500.00 be approved to fund the relocation of sign, shrubbery and
trees to improve site visibility along Denton Tap Road. Councilman
Smothermon seconded the motion; motion carried 7-0 vith Mayor Pro Tam
Wilkerson, Councilmen Thomas, Morton, Smothermon, Cow, an, Robertson and
Nelson voting in favor of the motion.
Item 32:
Discussion, consideration of approval of entering into an
agreement with Evaluation Associates to do a thoroughfare
enhancement study on Denton Tap Road in the amount (not to
exceed) $42,000.00.
Deputy City Hanager/Finance Director Frank Trando made the presentation
to the Council. Mr. Trando stated that this item is in conjunction with
the Road Assessment Program on Denton Tap Road. Folloving discussion on
this item, Councilman Robertson moved that the City enter into an
agreement with Evaluation Associates to do a thoroughfare enhancement
study on Denton Tap Road in the amount not to exceed $42,000.00.
Councilman Thomas seconded the motion; motion carried 6-1 with Mayor Pro
Tam Wilkerson, Councilmen Thomas, Smothermon, C/nman, Robertson and
Nelson voting in favor of the motion and Councilman Morton voting
against the motion.
Item 33:
Discussion, consideration of authorizing City Hanager and City
Attorney to proceed . with negotiations or conde~m~tion
proceedings, as required, for securing ROW for MacArthur
Boulevard extension north from its northern terminus to
connect to MacArthur Boulevard within Vista Ridge north of
Denton Creek.
Following discussion on this item, CouncilmAn Thomas moved that the City
Manager and the City Attorney be authorized to proceed with negotiations
or condemnation proceedin~s, as required, for securing ROW for the
HacArthur Boulevard extension. Councilman Morton seconded the motion;
motion carried 7-0 with Mayor Pro Tam Wilkerson, Councilmen Thomas,
Morton, Smothermon, Cowman, Robertson and Nelson voting in favor of the
motion.
~ONSENT AGENDA
Item 34A:
Discussion, consideration of an escrov agreement from Exxon
Corporation in lieu of their obligation to construct their
portion of Sandy Lake Road improvements.
Discussion, consideration of an ordinance for Case $'s S-1021,
S-1023 and S-1024, to change the zoning designation from (R)
Retail, to (R-SUP) Retail Special Use Permit, on a parcel of
land located at the southeast corner of East Beltline Road and
South Beltline Road, and authorizing the Mayor to sign.
C: Discussion, consideration of approval to authorize the City
Manager to develop a concept formula for sharing in capital
cost of the natatorium and providing information to the
Recreational Facilities Bond Comaittee.
D: Consideration and adoption of an ordinance abandoning an
existing drainage easeeent for a new document granting the
City a 15 foot drainage easement, and authorizing the Mayor to
sign.
PACE 12 OF 14