Loading...
ST9301-CS030501May 1,2003 Mr. Kenneth M. Griffin, P.E. Director of Engineering and Public Works City of Coppell 255 Parkway Coppell TX 75019 Re: Proposed Pavement Grades for Sandy Lake Road St. Joseph Village Coppell, Texas Aguirre ProJ. No. 1030-0099-00 Dear Mr. Griffin: This letter is in response to your letter of January 21, 2003 regarding our proposed pavement grades for Sandy Lake Road near the main entrance to St. Joseph Village. We appreciate your review of our proposal, and we apologize for this tardy follow-up. We believe that our proposal may have been confusing, and would like herein to clarify our design intent. 1. We propose to maintain the plan elevation of 448.81 at Sta 39+50 as shown on Sheet 18 of the County's drawings, and to extend the plan grade of +0.50% westward to a PVI at Sta 37+75. This would yield a controlling elevation 447.94. 2. We propose to also maintain the plan PVI elevation of 449.71 at Sta 35+00, and to revise the slope from Sta 35+00 to Sta 37+75 to -0.64%. ( 449.71- 447.94)/275 = 0.00644 3. The proposed change in slope from Sta 35+00 to Sta 37+75 will necessarily change the vertical curve parameters between Sta 34+50 and Sta 35+50. The revised vertical curve data are e=0.14 and the top of curve elevation at Sta 35+00 will be 449.,57. = ^ 100' verti(;;al curve with the converging slopes and proposed PVI elevation at Sta 37+75 will yield an e=0.t4 and a top of curb elevation of 448.08 at Sta 37+75. The Iow point of this vertical curve will be 448.08 at Sta 37+81.14, We note that this Iow point would be in the transition area of the proposed recessed inlet at Sta 37+75, and therefor should not create a location of standing water, Mr. Wonderful Client January 27, 1997 Page 2 of 2 We sincerely hope that this more complete explanation of our proposed design will allay your concems. We have also included a 'red4ine' of Sheet 18 to better define our intent. However, if you are still uncomfortable with any element of our proposal, please contact us, and we will modify our plans to meet YOUr wishes. Respectfully, AGUIRREcorporation J. Michael Millican, PE Senior Engineer mm :~,G~imn05OlO3.doc copy: G. Roden B. Spinelli 0 L El © © O O © 445 445 445 -- TRACT 2 M. KATHRIN INGLE I MILDRED JUANITA COOPER /: . ' :' ,' "' ' f · BUTTRESS CORPORATION HORIZ SCALE (IN FEET) ..... , VOL, 84025 / PO. 4314 : VOL. 92167 / PO. 4888 ,/I FIRST COLONY BANK / ~*~ ~,,,-, ,~ / " '~ //I / / '/ VOL. 9158 / PG. 4590 ~" " ~ ' '"' " / .... PROP. SLOPE ESM T. D R n r T . n p n n T /' VOL, 91024 / PG 17R . vA/ i~MILLII~ , '' ''' ii (.~ I ! n D n r. T · e le 25 4~ , _- .......... ~ ~ .............. ~ n p n r T . VOL. 81245 / PG. 1806 , BILLY E. IRVIN & ~, ~..~ ~ / , , , VOL. 92119 / PG. 4098 .... , ,- , ~ ~ ~ ~ ,) ~ ; ¢ ~ ( +20.0~ _"'=bL~jq i' / ~ ' / ~ -- I UO(L) NEW UNOEROROUN0 ELECTRC LNE ¢_ CURVE DATA P,t. = STA, 52+51,50 A = 3T°02'54'' D= Go 44'26' R= 850.00' 284.8O' L= 549.62' SE=~/4' /FT 35+00 4.29 .58.62' + 3 4.2 5/ 58.99 RT MATCH EXIST. +47 54,19' RT L ,+47,07 60.30' RT MATCH EXIST. ---' SL~tt . ~ o '' SL'~I5 - 1+20.06 0 GAS LINE ........ 8'RT ~ +69.04 ~ ~' : ~ % SS SANITARY SEWER LINE ~ +f3.03 ~36' RT ~ : ' '~ +~4.O6 ,' ~ ~ +96.06 .... ~ [ , ~ ,.~.,.,.~.~., .............. ~ .... ~.~::~.,_,.~;~::.~...,-~-Z~ ........................ o~ --~ ......................... ~'~ ................. ~~--~--:--~-~ ....... ~ .......... ~.,~..; ...... ~ ............... ,~.. U0(T) UNDEROROUNO TELEPHONE LIN~ . .......... ,. ~ ~ 21' RCP UG(E) UNDEROROUND ELECTRIC LINE ...... ................. / %%= ~ ............... ~ -- ~ ...................... : ~ -; .... PROP, ROW ASPHALT~~~ ~8+~.0~~ ] ' .............. x/ ' ' "N~ r Cm~.~U ~/ 34'+00 FIRST TEXAS SAVINGS ASS'N. INFORMATION ONLY ' UNDERGROUND FACILITIES, STRUCTURES, AND UTILITIES HAVE BEEN PLOTTEO VOL. 88213 / PG. 6301 ,. These, documents ore for Deslgn Revfew I jFROM AVAILAGLE SURVEYS AND RECORDS; AND THEREFORE, THEIR LOCATIONS D.R.D.C.T. ~ ........ +64.0~ , ~, +7~,0~ '" ...... ~ not fntended for Constructlon, Bfddlng or Permit j MUST BE CONSIDERED ~PPROXtMATE ONLY. IT ~S POSSIBLE THERE MAY BE ' " ....... /~ [OTHERS, THE EXISTENCE OF WHICH iS PRESENTLY NOT KNOWN OR SHOWN, IT 7~.~0 RT 71.50 RT Purposes, They were Drepcred by, or under the ~' E-i4~ ~s THE CONTRACTOR'S RESPONSIBILtT'f TO DETERMINE THEIR EXISTENCE ANO MATCH EXIST, ':~ATCH EXIST. supervfsfon of: ~/ [EXACT LOCATION ANO TO AVOID OAMAGE THERETO, . ,~. ' .," SHANNON L, HE88 73677 H-17-99 NAME PE ~ OATE ~ ~~~ -0.50X T ~, ~ : : +O.sOX +00 PVl ~ ~ : ~ EL=449.7t , I e=O.l~' ~ EXIST OR~O. LT. RO'~ : ' ' ' ' , " LVC = '00' , . ~ ~ e~O.~3 ~ ~ ~ LVC ~ ~00' ~ ~ ~ ' , [- +00 PVt R' MED =~ ....... ~~~~ ..... ,~____~ !-0,50~ RT ] -O.5OX LT &: RT MED ~ EL=448.71 ' ' ....... , .............. e=O.13' +~50% .... " '~E~ ~ ~ LVC = 100' ~ i ~ "'*O.55X L~ '' ' ~ ~ EL:449 80 i - ~ 445 ~ ~ ~ ~ ~,~ ~ ~ ., . , Irc = I00~ ~ , ' ~ -- +0.50% ' +00 PVt ; ' : , ~ e=O~ ~ , ~ I-~ -- ' '--- -- -- : ..... -- = 445 EXIST. GRND. RT ROW 0F (FOUND) ~ ~E~S~ON ,, SOU~RE CUT'ON TOP OF CURB RADIUS ~ S.E. ' ~" ' ' , ~ : COR~ER n,~. K~*JBEL. ,nJ,~T,,~,, · -,,~"~'n ~~~AY. COUNTY TEX S ~ ~ ~ ~,~ DALLAS COUNTY (FOUND) "' "'"~ '" ~' "' ':~';'" ' PLAN & PROFLE,., ,' ':v:, ',:,'~, S~ A. 34+00 - STA 39+50 STAND~RD ~BLET STAMP~O 'P~',ME TRAV. ST~.NO. PAV~NO 4 ~ ~ , ~ ~ i 7 Y 1924 R35 TEX 1924' ALCNO SANDY L4KE ROAD ON HE : :t;: :j: .~), ")~'.:~; ,.... , . ., ~ ~ ~PP~C SLH ~~~- 7 = 20'H, i' = 5' V