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GENERAL PROVISIONS GOVERNING INSTALLATION OF SUBSURFACE -STRUCTURES AND PIP-ELJNES ffiTHil"l" COUNTY ROAD-RIGHTS-OF-WAY · . . . PUBLIC CONVENIENCE AND SAFETY: A Before obstructing any private driveway entrance or County road traveled way with a trench, spoil bank, equipment qr other barrier peo:nitted for any prolonged.period ofJ;ime, the Permittee,shaJI notify the known users ofihe respective fugmughfare(s) involved, and shall provide access for vehicular-and B. .c. D .. pedestrian traffic to an_d :from the road. · . 1. Unless ofuerw.ise _permitted, all work sha!J be conducted in. such a manner that no less than 1,ne lane of the existi\lg County road traveled way will be maintained open to public traffic during working hours in a smooth.~d safe riding conditi.on(s). Two lanes sha!J be open after worlcing hours. 2. In cases where road closure is pe='tted, the permission to close the road will be granted under ;the condition that the Permittee notify the foITowing persons ancf/or agencies of the.time, the period: of closure, and-the detour rotr'"i.e .at least twenty-:four (24) honrs prior to said.road closure. a The County. of San Joaquin. Public Works Depa.iment .cl. The local fire district b. The-County of San Joaquin. Sheriff's Office e. The local school dist:ict c. The local postal service f The local residents kwolved Should .hazardous C:onditiaus relative to the installation.Dperations wam,nH!agrnen, as many capable flagmen as may be necessary shall be provided.by the · P=.if"i..ee and stationed in advance of work to Wa(Il and direct traffic. . Lights, signs and barricades shall be :furnished, erected and maintained by the Perrnittee for the aclequaie warning and convenienc~ offue public, with. particular attention to be taken in this regard after dark. Any excess dirt and/or debris which might be a hazard to either automobile oi pedestrian traffic, 1].Ilcontrollable by lights, signs and barricades, shall be remr:ived :from the jobsite daily. · STRUCTURES:. A Walls of structures shall be such quality and strength-that they will resist alJ pressures ~d will not crack~r be defurmed in such a Wff'f as to create ahaz:ird · or maintenance problem at any time. T.fierefore, the minimum structural requir=ents for cpncrete pipe placed under county road righls--{Jf-way shall conform to the'fullowi:a.g American: Association of State Highway and transportation Officials (AASHrO)" designal:i.ons. · 1. For concrete pipe up to and including thirty-three inches (33") inside-diameter, extra strength concrete conforming to AAS:E-ITO Designation M 170M. . · · 2. For concrete pipe thirty-six inches (36") inside diameter and larger, reinforced concrete pipe conforming to AASHrO Desfa:nafion M 170M Class ill. . . ' " 3. Plastic pipe coru-'urmingto AASHTO Designation M294. . B. A.ll concrete pipe joints with County road rightl-of-way shall be sealed against leakage and/or.infiltration with rubber gasket in co11J.-'brmance with Section. 65-1:06 of the California Standard Specifications, or w.lth other methods as may be permitted underth:e Special Provisions. · C. Cast-in-place concrete pipe, v:itri:fied clay pipe, spiral welded steel pipe, cir corrugated aluminum. all□Y, pipe shall not be installed within the Connty road rights-of.way 1Illless specifically so si:a±ed in the Special Provisions, and only under the conditions as provided. D, All structures to be 'buried within the County rights-oJ.,.way shall lie set at such elevations as. to allow minimum covera,,ae of thirty inches (30,,) to the centerline of the roadways and twelve inches (12") atfue bottoms of borrow ditches each side of the roadways. The depths of structures sha!J be established be1ow a fJzt pl3!1e extending across the rigbts--{Jf-way, no part of which shall extend above the elevations stated above; mani.'J.oies, lamphojes, ~alves, etc. not included. FUJ.'ure sm:face elevations shall be anticipated as nearly as possible and structure elevations sh.all be established for future adjustments· accordingly. E. The County hereby reserves the right to specify in the SP.ecial Provisions the gage and surfac~ treatment of any galvanized corrugated metal pipe that-is to be installed. F; All longitudinal utility facilities are to be established .(and dimensioned on sketches) from surveyed centerline of road right-of-way, not from right-of-way (border) lines. · REPAIRS OF THE CODNTYRIGHT-OF-WAY: A. All excavations shall be backfilled and compacted immediately after work therein has been completed. B. Trenched shall not be left open farther than 30_D feet in advance of pipe laying operations, or 200 feet to the 3:ear thereot; unless otherwise pelJil.J.7±(,d by tpe Engineer. · C. , Unless otherwise permitted under the Special Provisions, backfill shall be placed and meclianically compacted in ·such a manner that the r.elative compaction throughout the entire fill with.in the Counfy road rigqt-of-way sha!J conform to the perce!!±ages of compaction as shown on the Trench detail. . . D. Backfill material shall be placed in horizontal uniform layers not to exceed in thi~kness, before compaction., 0. 67 foot in the bedding region, one -foot where 90% compaction is required, and two-feet where 8-0% compp-ction is required. · E. No p"ortion of the excavation(s) sha!l·be compacted by ponding or jetting un:less a maintenance bond is provided. F. Gravel backfill material shall be utilized only where specifica!Jy so sta.L'-ed on the face of the permit It sha!J be compacted by means of ahigh-:frequency internal vibrator, -the compactor to be a size and type approved by the Engineer. P0ints of compaction shall not be greater than 18" centers and t6 the :full depth of the lift . · G. All pavements, curbs, gutters, sidewalks, b·oirow ditches, pipes, head walls, road signs, trees, shrubbery, and/or other permanent road facilities impaired by or as a result of construction operations attlie construction site(s) occupied by maJ:erials and/or equipmeni; shall be restored immediately upon backfilling of the eitcavation to the original grades and cross sections, and to a condition as good as, or better fuan existing prior to construction. H. · All surfacing materials of roadways and driveway approaches cut or damaged by or as· a result of construction. operations, shall be replaced witb.in"ONB WEEK following the backfilling of excavation., weather permitting, with compacted layers of surfacing materials at least as thick as the existing, and no Jess . than two inches (2") of asphalt concrete over six inches (6") of aggregate base, both as specified below. . • ··k Asphalt Concrete: Combined mineral aggregate sha!J conform to the quality and gradation requirements for 'fype ''B" ·one-half inch(l/2) maximum aggregate, coarse or medium gradation as specified in Section 39 of the California Standard Specifications, Toe bituminous binder to be mixed with mineral aggregate shall be paving asphalt having (Grade PG 64-10), unless otherwise directed by the Engineer. Placement of asphalt concrete surfacing shall conform to the applicable provisions of Section 39 of the California Standard Specifications. 2. Aggregate Base: Combined mineral aggregates sha!J conform to the quality and the grading for three-quarter inch (3/4") maximum size aggregate Class 2 Aggregate Base specified in Section 26 of the Califoruia Standard Specifications. 1 Before acceptance of repairs to the County road rights--{Jf-way, all unsightly and detrimental dirt, dust and/or debris shall be removed and the construction areas left in a neat and presentable condition(s ). L If necessary, County road traveled way and driveway p<n'ements shall· be washed with water to remove dirt and dust 2. Driveway approaches and :field entrance pavements damaged by equip.ment or spoil banks shall be ;epaired as directed by the Engineer. J. Upon request by the County, any settlement, sagging of surface, or cracking of pavernen'tshall be repaired frnmediately by and at the sole expense of the Permif"i..ee for a period of one year folio-wing acceptance .of the work F:\PERMITS COUNIER\general provisions\Wiater W ealher Provisions.docx ' ,
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