|
GENERAL PROVISIONS
<br />GOVERNING INSTALLATION OF SUBSURFACE STRUCTURES AND PIPELINES WITHIN COUNTY R0AD-1R1_GHTS-0F-WAY
<br />PUBLIC CONVENIENCE AND SAFETY:
<br />A Before obstructing any private driveway entrance or County road traveled way with a trench,spoil bank,equipment or other barrierpermitted for anyprolonged-period oftime,the Permittee shall notify the known users ofthe respective thoroughfare(s)involved,and shall provide access for vehicular andpedestriantraffictoandfromtheroad
<br />1. Unless otherwise permitted,all work shall be conducted in such a manner that no less than one lane of the existing County road traveled way willbemaintainedopentopublictrafficduringworkinghoursinasmoothandsaferidingcondition(s). Two lanes shall be open after working hours.2. In cases where road closure is permitted,the permission to close the road will be granted under the condition that the Permittee notify thefollowingpersonsand/oragencies ofthe time,the period ofclosure,and-the detour route at least twenty-four(24)hours prior to said road closure.a. The County of San Joaquin Public Works Department d. The local fire districtb. The County ofSan Joaquin Sheriff's Office e. The local school districtC. The local postal service The local residents involvedB. Should hazardous conditions relative to the installation operations warrant flagmen,as many capable flagmen as may be necessary shall be provided-by thePermitteeandstationedinadvanceofworktowarnanddirecttraffic.
<br />C. Lights,signs and barricades shall be famished,erected and maintained by the Permittee for the adequate waming and convenience ofthe public,withparticularattentiontobetakeninthisregardafterdark.
<br />D.. Any excess dirt and/or debris which might be a hazard to either automobile or pedestrian traffic,uncontrollable by lights,signs and barricades,shall beremovedfromthejobsitedaily.
<br />STRUCTURER
<br />A. Walls of structures shall be such quality and strength that they will resist all pressures and will not crack or be deformed in such a way as to create a hazardormaintenanceproblematanytime. Therefore,the minimum structural requirements for concrete pipe placed under county road rights-of-way shallconformtothe`following AmericanAssociation ofState Highway and transportation Officials(AASHTO)designations.I. For concrete pipe up to and including thirty-three inches(33")inside diameter,extra strength concrete conforming to AASHTO Designation M170M.
<br />2. For concrete pipe thirty-six inches(36")inside diameter and larger,reinforced concrete pipe conforming to AASHTO Designation M 170M ClassIII.
<br />3. Plastic pipe conforming to AASHTO Designation M294.B. All concrete pipejoints with County road rights-of-way shall be sealed against leakage and/or infiltration with rubber gasket in conformance with Section65-1:06 ofthe California Standard Specifications,or with other methods as may be permitted under the Special Provisions.C. Cast-in-place concrete pipe,vitrified clay pipe,spiral welded steel pipe,or corrugated aluminum alloy pipe shall notbe installed within the County roadrights-of-way unless specifically so stated in the Special Provisions,and only under the conditions as provided.D, All structures to be buried within the County rights-of-way shall be set at such elevations as to allow minimum coverage of thirty inches(30")to the
<br />below a flat plane extending across the rights-of-way,no part of which shall extend above the elevations stated above;
<br />manholescenterline
<br />ofthe roadways and twelve inches(12")at the bottoms of borrow ditches each side of the roadways. The depths ofstructures shall be established
<br />lampholes,valves,etc.notincluded. Future surface elevations shall be anticipated as nearly as possible and structure elevations shall be established for future adjustments accordingly.E. The County hereby reserves the rightto specify in the Special Provisions the gage and surface treatment ofany galvanized corrugated metal pipe that is to beinstalled.
<br />F. All longitudinal utility facilities are to be established(and dimensioned on sketches)from surveyed centerline ofroad right-of-way,not from right of--wayborder)lines.
<br />REPAIRS OF THE COUNTY RIGHT-OF-WAY:
<br />A All excavations shall be backfilled and compacted immediately after work therein has been completed.B. Trenched shall not be left open farther than 300 feet in advance ofpipe laying operations,or 200 feet to the rear thereof,unless otherwise pe ed by theEngineer.
<br />C. Unless otherwise permitted under the Special Provisions,backfill Shall be placed and mechanically compacted in such a manner that the relative compactionthroughouttheentirefillwithintheCountyroadright-of-way shall conform to the percentages of compaction as shown onthe Trench detail.D. Backfill material shall be placed in horizontal uniform layers not to exceed in thickness,before compaction,0.67 foot in the bedding region,one—foot where90%compaction is required,and two-feet where 80%compaction is required.E. No portion of the excavation(s)shall-be compacted by ponding orjetting unless a maintenance bond is provided.F. Gravel backfill material shall be utilized only where specificallyso stated on the face ofthe permit. It shall be compacted by means ofahigh-frequencyinternalvibrator,the compactor to be a size and type approved by the Engineer. Points of compaction shall not be greater than 18"centers and to the fulldepthofthelift.
<br />G. All pavements,curbs,gutters,sidewalks,borrow ditches,pipes,head walls,road signs,trees,shrubbery,and/or other permanent road facilities impaired byorasaresultofconstructionoperationsattheconstructionsite(s)occupied by materials and/or equipment,shall be restored immediately upon backfilling oftheexcavationtotheoriginalgradesandcrosssections,and to a condition as good as,or better than existing prior to construction.H. All surfacing materials ofroadways and driveway approaches cut or damaged by or as a result of construction operations,shall be replaced within ONEWEEKfollowingthebackfillingofexcavation,weather permitting,with compacted layers ofsurfacing materials at least as thick as the existing,and no lessthantwoinches(2")of asphalt concrete over six inches(6")ofaggregate base,both as specified below.T.- Asphalt Concrete:Combined mineral aggregate shall conform to the quality and gradation requirements for Type`B"one-half inch(1/2)maximum aggregate,coarse or medium gradation as specified in Section 39 ofthe California Standard Specifications. The bituminous binder tobemixedwithmineralaggregateshallbepavingasphalthaving(Grade PG 64-10),unless otherwise directed by the Engineer. Placement ofasphaltconcretesurfacingshallconformtotheapplicableprovisionsofSection39oftheCaliforniaStandardSpecifications.2. Aggregate Base: Combined mineral aggregates shall conform to the quality and the grading for three-quarter inch(3/4")maximum sizeaggregateClass2AggregateBasespecifiedinSection26oftheCalifomiaStandardSpecifications.I. Before acceptance of repairs to the County roadrights-of-way,all unsightly and detrimental dirt,dust and/or debris shall be removed and the constructionareasleftinaneatandpresentablecondition(s).
<br />1.. Ifnecessary,County road traveled way and driveway pavements shall be washed with water to remove dirt and dust
<br />be repaired as directed by the Engineer.2Driveway approachescsedamagedd field entrance pavements spoil elJ. Upon requesstby the County,any settlement sagging ofsurface,or cracking of pavement repairedshallbimmediately by and at the sole expense ofthePermitteeforaperiodofoneyearfollowingacceptanceofthework
<br />F:\PERMTTS COUNTEM.-eneral provisions\winterWeather Provisions.docx
|