Pecan Hollow-CS 900430 COPP~.LL PUBL'~C ~ORKS
April 30, 1990
rkO, ~, -
FROM: Steven G. Goram, Director of Public Wo
RE.- Pecan Hollow Addition ~
Staff has met with the representatives of Pecan Hollow Addition and
have generally agreed with their request of variance regarding the
minimum centerline street radius.
When this plat is brought to City Council for final consideration,
staff will not recommend denial of the requested variance.
Should you have any questions, please advise.
SGG/sm
cc: Shohre Daneshmand, Acting City Engineer
· CHRISTIE.TAYLOR INTEREST
April 10, 1990
· .~a. Ratl~=f
city ..'4anage r
;'..
City of Coppell
255 Parkway Boulevard t~/.~.~4
Coppeil, Texas '75019
RE: PECAN HOLLOW ADDITION
COPPELL, TEXAS
Dear Mr. Ratliff:
We are currently, in the or....oc==°n.,., of [ina!izin'-'_: ~....
construction plans and final plot for the above referenced
addition. We are requesting a variance to the current
subdivision ordinance" to al'~" re~uc~
~.~ a ~ion in ..... r. inimum
centerline street radius. Currently the ordinance states that
thoroughfares oha.], have 425 feet centerline radius for 30 m.p.h.
traffic The centerline a:
. ra~..:i of our oro~ect are in comoiiance
with many of the surrounding cities such as Dallas, Garland and
Plano, for examD!e (see attached) In addition, these ~a<]ii
representative of the folowing subdivisions in Coppeii:
Northlake Woodlands, Sections 1,2,3,4,5,6,7,&
Northlake Woodlands East, Phase 3,4, & 6
Meadows, Section ! & 4
Park Meadows, Secnion 1
Parkwood, Section ! ~ 3
Raintree Village
Samuel Boulevard & MacArthur
Shadowridge Estates
Sherwood Park, Section !
Summer Place
Waterside Estates, Phase 1
Whisperinq Hills
willow Wood No. 2
Woodridge, Section !, 2, a 5
Our site plan tzoning~. . an~ preliminary~ _olaf were ar, r)rovod..
based on the configuration as submitted for the final, olat.
~f you need any additional information, please contact me.
Larry R. Ta~lor
Pecan ~ollo~ Joint Venture
LR'P: acw
Attachments~
Dalk,~ Oil',ce Kan~a~ C,rv Off-ice
EAX t214) 380-1142 E'~ X ¢)!.B 4(,9-436(-
- CITY OF PLANO -' '"..
i ~ '
- SF-9 SINGLE-FAMILY RI'_-;SIDENOE-9 '.'
A. PURPOSF. -' The '~r--9" district is Intended to provid4 s~e~s f?
u, ban, single-family development protected frorfl excessive hal.se,
Uk~m}natlon~ odors, visual clutter and other ebJectibnable in~lur:nee~ to -
PERMITTED USES
2. Planned Residential ~elopm~nt [See ~etibn~
3. Church ~d Rectory ' ~ .
4. Park, Playground, or COmmunity Center
5. Sehool~ Public or P~oehial
See Schedule I, Permitted Use~, for a eomplo*e listing
C. AREA, YARD AND [IULK REQUIRE, IEN'~
1. MinimUm ~t Area - 9,000 ~u~re feet
2. blinfmum Lot Width- , 75 feet
3. Minimum ~t ~pth - ~' 100 feet
4. Minimum Front Yard -' 30 feet, except ~ provided belo~ and in
~etlon ~-500
5. ~tnlmum Side Yard - ' ~.5 feet or 1. e% of lot wldth, ~hlehever
Is greater. (See ~etlon
-- of Corner ~t -' 15 feet on street side
6. Maximum Side Y~.rd- 10 feet
7. Minimum Rear Yard - 10 feet (See ~etlon
8. Minimum Floor AreR Per
Dwelling Unit- 800 ~u~re feet
9. Maximum Height - ~ *torles (See SeetJen 3-800)
" 35 feet
I0. M~xlmum Coverage- 35 percent, p. lus 10 peree~t
coverage permitted for · aeee~ory
buildin~, (See Section 3-70I)
1I. Parking Requirements ~ 2 P~r~.g spaces per d'.elUng vail. (See
~ i Section 3-II00~ Farklng Regvl~t[on~)
.Front y~zds may be varied under o~e, but not both, of the following
t. "['t~e minimum front y~d may be reduced by a maximum of 5 feet Ir 25%
o[ the street lengths In the ~ubdtvj.lon: ... ~e eurvilinear In d-q~[{".... ,.... ~ no
e~se shell the required fropt yard be le~s th~n ~[, feet. The term
"eurv~linenr In destgn" shall r~fer to any street segr'3ent which t~ designed
with a degree of curvature net less then 3o 30' and uot ~e~ter th~n
55', and which shall offset ~ minimum ~ist~ce of 30 feet, ~Id offset
being measured perpenflie~ar to the Initial tangent llne of the curve.
Comput0tion of percentage of. eurvtlinear streeL~ shall utilize tt,e eeaterline
er all interior sLreets, excluding streets with a right,f-way width greater
than 70 feet (see Appendiz llustration 15).
j.t;:,.
CITY OF GARLAND i .., ,,
Horizont~] Alignment:
- Minimum Curve Radii .'
Non-Arterial Streets (Based on Zoning)
Re~ldential 250' " ' 356i .,
Other 350' , i 425'
A~te~l. al Streets (Based on Anticipated Spee~
Speed Limit (mph) ' Curve Radius (ft.)
25 300
30 425
35 600
45 1050
50 1400
Varf. at{on~ may b~ approved, by the Traffic Department.
Street Intersections:
- C19~r Sight Distance (length along each
approach leg in feet ~e~suz~d from pro-
Jected curb lines]
~. Street intersection ~5'
b. Alley intersection . i 25'
- Allc,~ble An~le of Intersection B0-100 {99 P~e[erred)
- Minimum Curb Radius (feet)
a. Local-local 25'
b. l, ocal-collector 25'
c. Local-arterial ~5'
d. Collector-collector 30'
e. Collector-arterial ; 30'
i. ~rterial-arterial 3Q' and ako'.'e
- Minimum Centezllne Offset of Adjacent Int~rsection (feet]
! ,
{ a, Local-local 125'
i b. Local-collector 150'
i ::. Collector-collector 200'
{
{
~ .- Ml~im.,~.m Tangent Length ~ppro~chtng Intersection .15'
~ {,:ecl, approach In feet)
~ ,- ~ltn!~um Tangent Length Betveen ~eve~se Curves (feet)
a , Local 50
b. Collector ~00'
c. Arterial
CITY OF DALLAS
e.¥2-f
where :,
~ - rate of roedv~ay superelevatton, foot pm' foot
f - side friction factor .(See Table 3)
,.
V - vehicle design speed~ ~ph
R ~ radius of cra-ye in feet
FOR IHOR~GHKA~ES
· Rate oF
(-' Superelevatfo.n_ ~.estgn
(Inches Per Foot) 30 35 40 45
-1/2 590 7go ~lOlO 1270
-3/8 540 720 930 1170
-1/4 500 ETO 860
-1/8 470 E3D BOO lOlO
0 (140 590 750 940
+1/8 4ZO 550 ?10 890
J +1/4 390 520 670 840
+3/8 370 490 630 790
+1/2 360 470 600 750
Side Friction
Street Classification Factor .(~
Minor Streets 0.160
Secondary Thoroughfares O.155
Divided Major Thoroughfares' 0,145
Other F',aJor Thoroughfares : 0.150
For local ~esidenttal strleets (HInor Street Types
mSnl,nu~n centcrl ine radius .~hall be 150 feet, For titnor
Streets, minimum centerltne radius shal be 230 feet.
!
-14-
CITY OF DALLAS "-'"?"
~ · ..-; ~-,...
STREET ~ND THOROUGHFARE ,, i . .. t.'..-
~EO~.~ETR lC STANDARDS :
Pav~:ent 14edtan ~arkw~y ¢.tght-of~
Classlficat_t_en Width (Ftk Width (F '.) .W.tdth (~Ft~. .W~y_(_F_t.).
Minor lype A I~6 i ,.
Minor Type fl-1 26 - 10 46
Itt~r Type g-~ t6 ' - 5.5 37
141~r Type C 36.
Secondary Type S-A 40 - 10 60
S~coM, ry Type $-B 4q . - t0 64
t~Jor lyt, e M-A 2-3:) ' 14 10 lo0
~.aJor Couplet ?ype A 33 ' - IO 53
Ha~or Couplet lype B 44 ~ - l0 64
Freew,.y As required by Tey. ns fl.-~rtm~n[ t,f flight. . .'s and Ppbltc Tt'~r..~,:,,.-tatlon