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HomeMy WebLinkAboutNoise Variance ITEM #38 c KRAEMER 100 Years of Construction Excellence November 2, 2011 Serial Letter: 00001 Mark Rohloff City of Oshkosh 215 Church Street Oshkosh, WI 54903-1130 Project Title: CN Rail Oshkosh Bascule Project Number: M.P. 173. 0 EKS Job Number: 501124 RE: Ordnance Variance Dear Mr. Rohloff, Edward Kraemer and Sons, Inc. has been contract by Canadian National Railway to replace the existing swing bridge over the Fox River in the City of Oshkosh. Construction of the project will begin in the middle of November this year and complete by May of 2013. The work will consist of constructing new piers on drilled shafts,erection of structural steel and removal of the existing structure. Construction activity will take place during the normal work week Monday—Friday 7:00 AM to 5:30 PM. A few construction activities will require work to be completed on Saturday. The City of Oshkosh Noise Ordinance provides a noise exemption for construction sites during the day Monday through Saturday. The majority of the project can be completed during the established noise day hours for construction projects. There are two operations that will require work to be completed during the night time hours. There is a 40 hour continuous work window where the existing swine bridge will be floated out and new bascule bridge will be floated into place. This is schedule to take place during the spring of 2013. The other operation that will require extended work hours will be the installation of the drilled shafts into bedrock. There are(12) 8' diameter drilled shafts that will be drilled 9.5' to 12' into bedrock. The project specifications require the drilling of the rock, cleaning, inspection. rebar installation and the start of the concrete placement to be completed within 96 hours. The drilling of the 19.000 psi limestone bedrock is anticipated to be a slow process and will require a continuous work operation. The drilled shafts will be constructed between November 2011 and April 2012. A package of information regarding these two operations has been attached for reference. The 40 hour main span switch out is a complex and tightly sequenced series of operations where the existing swing span, including the pivot pier, will be removed and the entire new bascule span will be installed. This accelerated bridge construction process is utilized to minimize the disruption of service. The continuous operations requirement for drilling of the bedrock is necessary to produce a solid interface between the bedrock and concrete of the drilled shaft. Edward Kraemer and Sons, Inc. would like to request a variance to the day hours for the noise exemption for these two specific operations that will require around the clock operations. This variance request is for the extension of the noise exemption to 24 hours a day for these specific tasks. Consideration of this variance by the City of Oshkosh is greatly appreciated by Edward Kraemer and Sons, Inc. If you have any questions regarding this request or the information provided, please contact me at(612)963-6197. Jon Bennett and I are also available to meet in person with you to discuss this request. Sincerely, EDWARD KRAEMER& SONS, INC. Dennis Maney, VP WI Region cc: David Patek City of Oshkosh, Director of Public Works Steve Gohde City of Oshkosh, Assistant Director of Public Works Page 74 of 404 RAIL TRAFFIC SECTION HC01546 PAGE 6 15 JULY 2011 6. INTERRUPTION OF RAIL TRAFFIC .1 Rail service across the bridge will be interrupted only for the removal of the existing superstructure and erection of the new spans, as well as the final installation of the miter rail joints. Every attempt should be made by the Contractor to plan the work to be completed well within the following planned worked blocks: 1. Work block No. 1: Twelve(12)continuous hours maximum to remove existing span 3, install new spans 6 and 7, install temporary span A, and complete the necessary trackwork and restore the bridge to condition necessary for the safe passage of trains. The time period actually granted may require work during night-time hours. 2. Work block No. 2: Twelve (12) continuous hours maximum to remove existing span 1, install new spans 1 and 2, install temporary span B, and complete the necessary trackwork and restore the bridge to condition necessary for the safe passage of trains. The time period actually granted may require work during night-time hours. 3. Work block No. 3: Forty (40) continuous hours maximum to remove the existing swing span, remove temporary spans A and B, install and align the track girder, install new spans 4 and 5, install the new bascule span, and complete the necessary trackwork and restore the bridge to condition necessary for the safe passage of trains. The time period will require work during night-time hours. 4. Work block No. 4: Eight (8) continuous hours maximum to install and align miter rail joints on the new bascule span and adjacent approach spans, and restore the bridge to condition necessary for the safe passage of trains. The time period actually granted may require work during night-time hours. 5. Work block No. 4 is a required operation by the contractor to remove the temporary running rails installed on the reconstructed bridge during the course of construction and to install the movable span's miter rail joints, as well as the continuous running rails(provided by CN). .2 During the track outage, the Contractor will remove the existing superstructure, erect the new spans, and restore the bridge to condition necessary for the safe passage of trains as shown on the contract drawings. The Contractor's responsibilities will include assisting the Railroad forces with removal of a portion of the existing track and assisting the Railroad with returning the bridge to service (blocking up and installing rail,etc.) .3 Payment for all of the aforesaid items contained in this section shall be included and reflected in the prices bid for the various Contract Items. 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I II (••■ It iy kitiO 65 11 I I z zg— u II zc,R II I Pi .251P , z— 1F-)0 outio Ili, a ® ddb 1.1 i , . ,nz ,, .....,.- „ I 1„ . „ , 1 E17, ,:q0z0,-- i., , 1 0_30 ,., Q a 1 ., 6-..). , 1 n-ft) ti cy 4; ts.141 1.J 3 II s"'I It I It I et' I Z Z II 1 11.16 Lau.a.a tit II 1 I Ffrttj. II 1 I MwOMMdM It II 0.1K000M90 "=Ill- . r , , I ,?..(.) a . l',Al Ii I 0 Lai,,C V G.)CO V 06 4 tri ai c.i in I . I I i .-..: I 1 1 i ■ Page 155 of 404 DRILLED SHAFTS SECTION HC12002 PAGE 8 15 JULY 2011 vibrating temporary or permanent casings will be permitted only as discussed in Article 3.2.1. The predrilled hole method shall not be used until a temporary steel casing has been set to a satisfactory depth below the mudline.The bottom of permanent steel casings shall be extended (i.e. seated)into rock,as needed, to provide a positive seal and to stabilize the shaft excavation against collapse, excessive deformation, or flow of water. In addition, permanent casings shall be within tolerances specified in Article 3.6 before the rock socket is excavated. .8 Where drilled shafts are located in open water areas, casings shall extend above the water level as needed to protect the shaft concrete from water action during placement and curing of concrete. .9 The method of excavation below top of rock shall be approved by the Engineer. Such excavation shall be along the axis of the casing and overbreakage at the rock surface shall be avoided so as not to impair a satisfactory seal of the steel casing with the rock. The excavation for the rock socket shalt be substantially circular and made to a diameter not less than the plan dimensions specified and shall extend to the full depth specified for the socket. Once excavation of a rock socket is started, the Contractor shall apply consistent effort to complete the socket and start placement of concrete within 96 hours from the start of the rock socket excavation. .10 The inside surface of the casing and rock socket shall be clean and free of extraneous material prior to placing of concrete. .11 Materials excavated from the drilled shafts shall be captured, removed from the project site, and disposed of in accordance with all applicable regulations and project permits. Materials excavated from the drilled shafts shall not be placed in the river. 3.3 Slurry .1 General: The Contractor shall use slurry, which conforms to the material property requirements specified herein, to maintain a stable excavation during excavation and concrete placement operations. Only mineral slurry shall be used to stabilize uncased excavations above top-of-rock. Once permanent casing is seated into bedrock, any mineral slurry shall be replaced with polymer slurry or clean water slurry. If permanent casing is set by driving or vibro, the slurry inside the casing shall be completely replaced with clean water. During the replacement process, the sidewalls of the permanent casing shall be cleaned by an approved method to remove any soils and slurry cake buildup. Only polymer slurry or clean water slurry shall be used to excavate the rock socket. .2 Technical Assistance: If a polymer or mineral slurry is used,the manufacturer's representative, as identified to the Engineer in the drilled shaft installation plan, shall provide technical assistance for the use of the slurry, be at the site prior to --- R 1 i 1 ,' - iii .2 11 •-., ''. * 7 r V 1 I --..------•---.- _ '`..^, . i ' ; I w 1 1■ F‹ 1 i 7; 1 11 tP EZ 1 , c II viik•r• '', i .1 , - , ,g 1111' jo5211t `,. 114,11 , / . ' 1.■ --'''''..-F.4°. 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I I a DRILLED SHAFT _.. . 1 PIER 3 (ONLY) I 12E4 t n+ a a � `` TIP *;lul ni I DRILL ED SHAFT OF BUNDLEtA 10 �� FORyC.SL TESTINGE EQUALLY SPACED (TYP) I -PPEERRMA.NENT STEEL A I A I ;CTION "A—A" (PIER 3) 7'-6- ROCK 5+ K I i STAGGERED MECHANICAL. COUPLERS, /� ' LINTON B OR S SERIES OR EQUIVALENT, f : {` PEIR 3 ONLY, SEE NOTES- G; .g r,10 1,3 I 0 N N H \41 hos. 20-BUNDLES OF 2-PIB01A 1 10 f 8-2-4 STEEL PIPE FOR CSL TESTING I I I EQUALLY SPACED (TrP) , CTION "8—B" (PIER 3) 3/*`-+'-6' EST. TOP OF BEDROCK] EST, TOP OF I I ?s ROCK SOCKET i TRACTOR SHALL PERFORM ONE VERIFICATION CORE HOLE AT EACH SHAFT ENGINEER SHALL CONFORM OR REVISE SHAFT AND SOCKET DESIGN IN INC BEFORE START OF SHAFT EXCAVATION. SEE TENDER DOCUMENTS FOR e .4/ p o .ICED VERIFICATION CORE HOLE REQUIREMENTS. n %,, lo In OF ROCK FORMATION MAY BE WEATHERED AND FRACTURED. THE BOTTOM B t B PERMANENT CASING SHOULD BE SEATED A MINIMUM OF 1'-O' BELOW TOP ROCK TO SEAL OUT OVERBURDEN. IF A SEAL IS NOT ATTAINED. EXTEND EST. BOTTOM OF , I NG DEEPER OR USE OTHER MEANS AND METHODS TO PROVIDE A SEAL. ROCK SOCKET` . el t SOCKET CLEAN OUT SHALL BE VERIFIED USING A VIDEO SHAFT ECTION DEVICE SUPPLIED AND OPERATED BY CONTRACTOR IN PIER ELEVATION 3RDANCE WITH THE TENDER DOCUMENTS. WALL 1.11. (SONIC TESTING PIPES NOT /IDE SONIC NON-DESTRUCTIVE INTEGRITY TESTING, CONSISTING OF SHOWN FOR CLARITY) SS-HOLE SONIC LOGGING (CSL) MEASUREMENTS. FOR EACH COMPLETED LED SHAFT AND ROCK SOCKET. ,ITUDINAL BARS FOR SHAFTS AT PIERS 1, 2. 3, 4, 5 AND 6 SHALL NOT ;PLICED. ;ITUDINAL BARS FOR SHAFTS AT PIER 3 MAY BE SPLICED USING ONLY .IANICAL COUPLERS. SPLICE SHALL, NOT BE MADE WITHIN 20 FEET OF TOP ?BILLED SHAFT OR WITHIN 10 FEET OF TOP OF ROCK SOCKET. NOT MORE R 50 PERCENT OF REINFORCEMENT SHALL BE SPLICED AT ANY ONE SENIOR STRUCTURAL ENGINEER L. AND LEVELS SHALL BE STAGGERED AT LEAST 30 INCHES VERTICALLY, —' DRILLED SHAFT DATA - M.. D... R..t wn sa PIERS I PIER 3 PIER 4 PIERS 5 4i^'w" NORTH Y"►" NEENAH !' 173' AND 2 AND 6 dm.... wu,• OTTOM OF CAP . TOP 744.76 742.67 742.67 744.76 BRIDGE 173.20 OVER FOX RIVER DRILLED SHAFT ELEV. iT, TOP OF FRACTURED OSHKOSH,CTURE4 705.00 703.00 703.0 . WI 70300 1 BEDROCK ELEV. EST. TOP OF ROCK 7ot,00 700.00 700.00 700.00 DRILLED SHAFTS SOCKET ELEV. ST. BOTTOM OF ROCK o.0 SOCKET ELEV. 695.04 690.5 694.tI0 694.00 c � MM y�""„Y„k •AIR 'Ills NOrrF.o 06120/11 NUMBER OF P05010 198 208 194 202 /r�,�!/.l' BARS 'A' PER PIER f...r,� •,.,,°.✓ �. Office of Chief Engineer ' = Bureau de 1'ingenieur en chef Cillq IIIIIR s'. ■iLIB 4 • u.,r trAAVOU in 2o -... ; AA1436-173.2-3.023 �TTU 3 .. 41.- L LAJ > N IY N I N X 4 4 > CM = O N N i N New �� r nt 2 2 a X03- ^ -- w 1 -zw W LJ,�Fa--M t Ct 2 y0�OtpW In I.-k--k`Q 0 t7t,j Q '' L--------Jc n v g . I .0.14 I t:( 004 0 al Ira r It` If . ":.. I 0.! , • L.,tx �.�O , .4111/11114 c1/111111.' . 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