Loading...
ST9902-CS071101Page 1 of 1 Keith Marvin -West Sandy Lake Road Bridge From: "Matt Atkins" <matkins @tnp- online. com> To: "Keith Marvin" <KMARVIN @ci.coppell.tx.us> Date: 11/1/2007 2:57 PM Subject: West Sandy Lake Road Bridge CC: "Mark Holliday" <mholliday @tnp- online. com >, "Delvin Black" <dblack @tnp- online. com> Attachments: rlstde05.pdf Keith, We have finally tracked down an answer to the types of bridge railings that TxDOT will allow on the bridge of Cottonwood Creek. Essentially, the rails that Coppell has used on other bridges will not be allowed adjacent to any traffic on a bridge with TxDOT review since they have not been crash tested. TxDOT does have a rail that is similar in nature to the ones that have been used in Coppell, and I have attached the details (C411 -Texas Classic). The proposed bridge has a total of three railings on it, two of which are adjacent to traffic and would need to be TxDOT standards. The rail on the outside of the trail could be any type that you wanted, however, our structural engineer does not recommend mixing the types of rails on the same bridge due to the possibility of confusion during construction and economics. Please let me know your thoughts regarding this issue. We are working toward a listing of the things that will change in our contract and preparing an amendment for you. If you have any questions, please feel free to contact either me or Mark. Thanks and have a great day! Matt Atkins, P.E. Project Manager 12160 North Abrams Road, Suite 508 Dallas, Texas 75243 214.461.9867 office 214.461.9864 fax matkins o _tnp- online.com www.tnr)- online.com file: HC: \Documents and Settings \radloo \Local Settings\ Temp \XPgrpwise \4729E959City_of... 3/9/2010 i6 OEOm ° m5E Entl of Britlge Rai for payment 1'. CL So iced I I I I I I I I Wingwall Length (Variable) 6-0" Min Face of 3-Y Abut Bkw l - J° E.- 0" Limi +s of I Abutment I Wingwall End Span Length = I''/2 Abutment Pilaster plus (Showing with Pilasters) %2 Abut Pilaster Perm iss Const Jt (Typ) 6.. © O O -f L Pilaster 1 - Permiss Const it (Typ) 6" 6" (Typ) (Typ) Slab (�)-- --* cL Slab it " /z" Pref Bi+um Fiber Ma +erialI I' Slab Join + - --� ABUTMENT PILASTER SPAN PILASTER O Metal Bean Guard Fence Transitions must be attached to the bridge rail and extended along the embankment 4 " unless atherwise shown in the plans. O Terminal Connector and associated hardware are to 1 _g be Paid for under the Item "Metal Bean Guard Fence ". O Number of windows shall be equal. ft Splice O Number of windows shall not be less than the amount in O3 . Span Pilasters may be spoced at 1/5 points in long spans. See Bridge Layout or other plan sheets. Dimension shall be the same for all posts adjacent to Span Pilasters in a span. Dimension may vary from Span to spon, Min = 3 ", Max = 7 %2 ". CL W -Beam © For rail without Pilasters, Min = 6 ", Max = 1-3". Connector O Rail Joints shall be provided at ends of all Spans and shall be (10 Gage) O� r the same width as Slab joint opening, except that Rail Joints over construction joints shall be '/ Min to � Max in width. Joints shall be open if slob joint opening i5 not sealetl. Joints over construction joints and over sealed 0 CK j0 ints shall be plugged. Forming material used in joints may be left in place if it is light in oa f or and Gampressib le, such a s the following materials: polystyrene, molded Cork granules, sponge rubber Sheet, etc. If forming material is not left in place, the bottom 6" shall be plugged with slab joint sealing compound t0 prevent drainage and staining. © Place 12" x 9" x /2" Preformed Bituminous Fiber Material between slob and rail at centerline fixed joints on box beam bridges. Shift Bars U as necessary. 0 Increase 2" for structures with overlay. 10 4 additional Bars WH(a5) 3' -B" in length shall be placed inside Bars SI95) and centered ' -0" from end of rail when Terminal Connections are required. Field bend as needetl. 11 Shift U Bars from region below 12" Preformed Bituminous Fiber Material at joints. outside face 3' -3" 3" 3" 2 Eq Spa = T, - 2 .. See "TL -2 Terminal Connection Details" 51 Edge of OS 0 slab) d N WH ( =5) i,,T E I,I I.IIL See - Field Bendy Detail "I' TrafT- See "ROatlwa I outside fOCe 5ide Elevation of Rail" 4 Eq Spa = _'-9" Bars S SECTION A -A SECTION B -B 5 h h t B It eac ead and nu . o s recesses are on y required w shall be of sufficient pedestrian sidewalks length to extend %2" to Y4 are ad j scent 5 "R IIb�Ieyondll nut.O to back of roil. II II Bars S e be rotated slightly to mpintain cove requirements. Bars WU con ♦ _ = be ototed slightly to Y _ O9 12 i �. i�„ mointain cove equirements. T?p of Abut 10 Wingwall 2' Span Length - (Span Length) (Showing without Pilasters) rL Interior Bent er Spacing Open Jt in Rai 1 ''/2" wider than Open Joint in Slab (Typ) (for continuous slabs, use %2" open joint at I Bent, also see C.) ■ III■ IIII■ IIII■ IIII■ 1 1 11 Miami =5) P) (a51 ELEVATION SECTION TL -2 TERMINAL CONNECTION DETAILS ELEVATION SHOWING TYPICAL REINFORCING PLACEMENT (Showing parapet with Pilaster on 6-0" Wingwall) V -6" (Typl p.. and 2'/2 4 %2 pan Length (Span Length) (Showing with Pi aster.) - CL Interior Bent- Edge of 51 at) ---,\ - - See DETAIL "A" outside face 2 Eq Spa SECTION C -C Pi last 1 The use Of this roiling is restricted to design speeds of 45 mph or less. 14 SHEET I OF 2 �f Texas Deportment of Transportation DETAIL " A" Brldge D1,151 m COMBINATION RAILING TEXAS CLASSIC TYPE C411 rl s14e05. agn oN: ix DOT ee: TapOT o : ix OOT ©T,DOT - 2003 BENT B BENT P Post edge S S" Max PILASTER P PILASTER WITHOUT W WITH P POST OVER W WINDOW OVER SPAN PILASTER SLAB BREAKBACK S SLAB BREAKBACK S SLAB JOINT S SLAB JOINT ROADWAY ELEVATION OF R RAIL r B Dia A325 Hex Heatl - 4 1" D holes antl 2 ''/2" Dia x 2" deep recesses. H Holes and r recesses must be formed or cored.. r T T W Washers. Place washer under b bolt holes a and recesses. Bolt 1 1 - - SfaS) at eac ead and nu . o s recesses are on y required w shall be of sufficient pedestrian sidewalks length to extend %2" to Y4 are ad j scent 5 "R IIb�Ieyondll nut.O to back of roil. II II Bars S e be rotated slightly to mpintain cove requirements. Bars WU con ♦ _ = be ototed slightly to Y _ O9 12 i �. i�„ mointain cove equirements. T?p of Abut 10 Wingwall 2' Span Length - (Span Length) (Showing without Pilasters) rL Interior Bent er Spacing Open Jt in Rai 1 ''/2" wider than Open Joint in Slab (Typ) (for continuous slabs, use %2" open joint at I Bent, also see C.) ■ III■ IIII■ IIII■ IIII■ 1 1 11 Miami =5) P) (a51 ELEVATION SECTION TL -2 TERMINAL CONNECTION DETAILS ELEVATION SHOWING TYPICAL REINFORCING PLACEMENT (Showing parapet with Pilaster on 6-0" Wingwall) V -6" (Typl p.. and 2'/2 4 %2 pan Length (Span Length) (Showing with Pi aster.) - CL Interior Bent- Edge of 51 at) ---,\ - - See DETAIL "A" outside face 2 Eq Spa SECTION C -C Pi last 1 The use Of this roiling is restricted to design speeds of 45 mph or less. 14 SHEET I OF 2 �f Texas Deportment of Transportation DETAIL " A" Brldge D1,151 m COMBINATION RAILING TEXAS CLASSIC TYPE C411 rl s14e05. agn oN: ix DOT ee: TapOT o : ix OOT ©T,DOT - 2003 =5) P) (a51 ELEVATION SECTION TL -2 TERMINAL CONNECTION DETAILS ELEVATION SHOWING TYPICAL REINFORCING PLACEMENT (Showing parapet with Pilaster on 6-0" Wingwall) V -6" (Typl p.. and 2'/2 4 %2 pan Length (Span Length) (Showing with Pi aster.) - CL Interior Bent- Edge of 51 at) ---,\ - - See DETAIL "A" outside face 2 Eq Spa SECTION C -C Pi last 1 The use Of this roiling is restricted to design speeds of 45 mph or less. 14 SHEET I OF 2 �f Texas Deportment of Transportation DETAIL " A" Brldge D1,151 m COMBINATION RAILING TEXAS CLASSIC TYPE C411 rl s14e05. agn oN: ix DOT ee: TapOT o : ix OOT ©T,DOT - 2003 z 2 Bronze Star (Use if 'no" Sown elsewhere o planbl n Mounting Holes �, 0 0 2,, Embossetl O Date 12 _ Top of SIOD or CL Pilaster Si tlewOlK , Wall 5I old ABUTMENT BENT SPAN TYPE A EXTERIOR PILASTER ELEVATIONS 2" 2" - Increase 2" for structures with overlay. 2- s /e "Dfa Stutls 12 Construction year )use if shown elsewhere on plans) 3" 36 °(Typ) High "Plantin BOItl" Typeface w, h �/ " recess. Placed at - One Abutment Only Or as directed by the Engineer. - 13 Open rail 6 R joint shall be � /1" greater than largest slab _ joint on the Bridge. Applies to Bent Pilaster over slob d joints and over Continuous Slabs. 19 Dimensions shall be the same on each side of joint. o Braze 15 Reduce by 2" or field bend over Preformed Bituminous � ITy pJ Fiber Material to gain cover. 165 %2" when vertical reinforcing has closer clear BRONZE STAR DETAIL wt« cover over horizont0l reinforcing in abutment Two Known manufactures are: DE 0- ingwalls or retaining walls on traffic side of wall. 1. KOb sons Castings 17 As an aid in supporting reinforcement, additional Austin, Texas longitudinal bars may be used in the blab with the 2. Southwell Compony -- approval of the Engineer. Such bars shall be San Antonio. Texas - furnished at the Contractors expense. 18 ToP longitudinal slab bar may be adjusted laterally 1 0 3" to tie reinforcing. _ 9 Nominal Face of Rail 2 .. 0 .. y ' D Nominal Face of Roil 35 2 .. ,,_0.. V, ,, Y " Chomfer ,•• " Chamfer (Typ) SIa51 o ago (T J� 3 R(v7) S IaS) (Typ) O ,.. Top of Slab or Sidewalk O O (Typ] H(-5) g ••16 �_ W-5)) Approach �4 Groove-- Y a _ WU(AS) Slab or CRCP V erticpl S �2 Pref Bitun 5 " Reinforcing Fiber Moteriol ON ABUTMENT W[NGWALLS SECTION THRU OR CIP RETAINING WALLS POST ON BRIDGE SLAB (Showing Pilaster) SECTIONS THRU RAIL TYPE B TYPE C WINDOW TYPES Nominal Face of Rail Y4 " Chamfer (Ty P) , RIa71 6 Y4 4 .. BARS WU (a5) O P- 0 BARS U (a5) Installed bar will rest on top of slab or Wall - Install with op on top—, c 15 BARS S (a5) GENERAL NOTES: This rail was evaluated based on the results of previous crash tests and approved for a NCHRP Report 350 TL -2 rating. This rail is only approved for low speed use, design speeds of 45 mph and less. Rail anchorage details Shown on this Standard may require modification for select Structure types. See appropriate details elsewhere in plans for these modifications. All Concrete for railing Wall sM1all be Class "C ". A Cl 055 "C" (one rub) finish Shall be applied to oil roiling surfaces unless Otherwise shown elsewhere on the plans. Shop tlr OW1ngS will not be regUiretl far this rail. Bronze Star shall be cast of architectural bronze having the following composition: Copper 85 7., Tin 5 %, Lead 5 Zinc 5 7* Bronze Star shall be attached with Type V epoxy. Epoxy Shoji completely fill void in holes after Studs Ore inserted and cover entire star- Concrete interface. Clamp star until epoxy Ochieve5 bet. Care shall be tOKen to avoid visible epoxy "squeeze out" from under star. If Shown an Bridge Layout or other plan sheets, railing n be .constructed without pilasters. See Bridge Loyout Or Other plan sheets for the fallowing: dirtlenbianb witM1 the number of windows, dimensions with the number of pilasters (if any), given window type, i nclusion of bronze s ors, inclusion of construction year with abutment identity. All reinforcing shall be Grade 60. Face of rail and pilasters, parapet shall be plumb unless otherwise approved by the Engineer. Epoxy coat Bars U and WU if Slab barb are epoxy coated. Average weight Of railing with no overlay increase and no pilasters is 350 plf. I - -� - 3i Dr oft Dermiss V2 at top w bottom q� C TYD� er ofOfalaSe iodoW5 J_ form emoval O O Top of Slab or Sidewalk SHEET 2 OF 2 \ - \ " -5) Texas Department of Transportation A Bridge a!v!slon U(A5) COMBINATION RAILING B a °-- - - - - -- TEXAS CLASSIC 5" SECTION THRU TYPE C411 WINDOW ON BRIDGE SLAB 1 Q, TrooT TrooT rxoor w• Tro ©T,DOT P — 2003