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HomeMy WebLinkAbout105 - Construction of Concrete Pavementsi RESOLUTION No. 1 0 A Resolution of the Board of Trustees of the City of Newport Beach Adopting Specifications to No.31 for the construction of Concrete Pave- ments in the City of Newport Beach. • Be it resolved by the Board of Trustees of the City of New- port Beach that the following specifications to be known as Speci- fications No.31 for the construction of concrete pavements in the City of Newport Beach be and the same are hereby adopted. -1.- PLANS,PROFILN6,ZTC., The work herein provided for is to be done in accordance with the plans, profiles and orose- sections on file in the office of the city engineer of the City of Newport Beach, and in accordance with the resolution therefor, and all work shall, during its progress and on its completion,00nfore to the lines and levels which may,irou time to time,be given by said City gngineer• -a.- WORN. A The work 10 to be dons as fcllowss 1. To excavate or fill in the area upon which the pavement, herein- after provided for,is to be construoted,to such an extent and in such a manner as way be required by the plans, profiles , orose -- sections and specifications. 8. To lay thereon the pavement as provided for hereinafter. and labor 3. To furnish all the materialsgnecessary to perform said work. 4. To do whatever else is required by these specifications. ..dfim� -3.- The sub -grade for that portion of the roadway upon which tin conofete pavement is to be constructed,ahall be such distance below and parallel with the finished surface thereof as is shown upon the adopted cross - section, -4.- GRADING. Grading shall include all filling,the removal of all earth, sand, stone or all other material,of whatever nature it may be,that may be encountered in preparing the street,and shall also include all trimming and shaping required to bring the surface of the street to grads and cross - section. When mud or other soft material is encountered,it shall be taken out and the space filled with good earth,sand or gravel;which if it is earth or gravel,shall be rolled until the surface of the foundation ceases to sink under or creep in front of the roller.The contractor,however,will not be required in such cases to excavate the mud or other soft material to a depth gfeater than two(a) feet below the sub - grade. All filling shall be.done with good sound sarth,gravel or MIN 21r;=q .ftenever a fill is to be made of earth or gravel,the embankment shall be brought up in layers not exceediing one foot in depth and each layer thoroughly dampended and rolled with a roller weighing not less than 200 pounds per lineal inch width of tire until it is firmly compacted. When the fill is made with sand it shall be brought up to grade and thoroughly dampendede and compacted. No material of a perishable,epongy or ortherwise improper nature,shall be used in tilling. The space over which fills are to be made,shall first be cleared of all brdsh, timber, trash or debris un- fit for foundation. curing the process of grading the street shall be maintained In a reasonably good condition for traffic,care being taken to remove the surplus material as evenly as possible over the entire surface of the street. The street shall be plowed up not to exceed one -half mile ' in length in advance of the laying of the concrete pavement,except where there are oar tracks on the street,in which case one side shall be held intact until the work of constructing the concrete pavement is begun on the other side.The contractor shall at all times maintain proper drainage on the street. The width of the street to be graded,except as otherwise 40 specified on the plans or in the resolution of intention adopted therefor,shall be the entire roadway space between the respective curb lines of such street. • After the block or section has been graded,as above speci- fied,the surface shall be thoroughly drenched with water,and when sufficiently dry shall be rolled with a roller weighing not less than 400 pounds to the lineal inch width of tire unitl the surface is unyielding.Wherever practicable the street shall be cross - rolled as well as rolled longitudinally.Depressions made by rolling shall be leveled up with good earth and again rolled. Such portions of the street as cannot be reached by the roller,and all places excavated below sub -grade and refilled,and all pipe trenches and other places that cannot be properly compacted by the roller,ehall be tamped solid and in cases of wet weather or soft or muddy ground,making the use of the roller unsafe or impracticable,the rolling shall not be under taken until the ground has become sufficiently dry. If the subgrads consists of sand it shall be compacted by wetting down thoroughly and smoothed to conform to oross- seotions. The contractor shall notify the City Ynginser when a black or a section has been brought to sub- grade,when the latter will check the elevation of the same, and if the work is found to be in accord• anoe with the epeoifications and grades given,the Contractor shall proceed as hereinafter mentioned. -5.- CONCRETE PAVEMENT. Upon the sub -grade prepared as above described,and thoroughly dampened,therd shall be laid a conciete pavement of the thickness shown on the cross- sections and composed of the following materials, to Witt 1. Portland Cement -1 part by measure. Z. Sand or stone screenings -3 parts by measure. 3. Gravel or broken stone -4 parts by measure. A sack of cement weighing ninety -four (94) pounds net shall be considered as having a volume of one cubic foot. -6.- CONCRETE MATERIALS. CEMENT: All cement used shall be Portland cement, and must conform to the following requirements and be subject to the following tests, which will be open to the Contractor and will be made by the methods and under the conditions prescribed in Specifications C9 -17 adopted by the American Society for Testing Materials in 1916. a.- CONSISTENCY; All cement for set tests,test pate, and neat briquet- tes will be mixed with sufficient water to reduce the cement to nor- mal consistency as pZeseribed by the Opecifications of the American Society for Testing Materials hereinbefors referred too heat briquet. too will be pressed into the moulds by hand, and the mortar briquettes will be compacted by light tapping. Mortar briquettes shall be mixed to a state of plasticity corresponding as nearly as possible to normal consiWtency in neat briquettes. b.- Fineness: The cement must be evenly ground, and when tested with thi following standard sieves, must pass at least the following per - oentages by weight: No-100 sieve, having 100 meshes per lineal inch -93 per carte sieve No.300 m- a havin.5 300 meshes per lineal inch -75 per cent. cvTIME OF SETTING: It shalldevelop initial not in not lose than thirt; minutea,but merit develop hard set in not lose than one hour,nor Rare ' than ton hours. d.- TEHBILE STRZNGTH: Neat briquettes one inch square in section shall _- attain a minimum tensile strength as follows: At 34 hour* in moist air -175 pounds. At 7 days(1 day in moist air96 days in water) -500 pounds. At 28 days(1 day in moist air,37 day* in water) -600 pounds. Br6quettes one inch square in section, made of one part of cement, three parts of standard testing sand, shall attain a minimum tensile strength as follows; At 7 days(one day in moist air, 6 days in water) -800 pounds. At 28 days(One day in moist air,27 days in water) -875 pounds. The sand test must in all oases show an increase in strength at 28 days over the 7 day tests, e.- SOUNDA$SS: Pats of neat cement about three inches in diameter,ons- half inoh thick at the center, and tapering to a thib edge, will be kept in moist air for a period of 84 hours. A pat will that be kept in air at normal temperature and observed at intervals for at least 28 days, Another pat will, after having been kept 24 hours in moist aif be placed in water at normal tespersturs. The water shall then be heated to boiling temperature and maintained for three bourse ?base pats,to satisfactorily pass requirements,must sami remain firm and hard, andmust not show any signs of distortion,cheok- ing, cracking, blotohin� or disintegrating, SAND.- All sand must be free from oil or organic matter and must not contain more than five per cent, by volume of clay,silt,loam of other foreigh substances. Not lose than 90 per cent, by weight,of the sand shall page a screen having 4 meshes to the lineal inoh; at least 50 per cent, but not more than 85 per cent, by weight,ehall be retained on a screen having 50 meshes to the lineal inoh.Briguettes one inch square in section, made of one part of cement, conforming to these specifications, and three parts of thaxabove sand, shall attain a miy mum tensile strength equal to that required for standard sand at periods of time, STONE SCREENINGS: Stone screenings shall be such as are obtained in crushing of clean,hard, and durable stone, and shall be that portion which has passed through a one - quarter inch mesh screen, and shall otherwise conform to the requirements for sand above speoifisde GRAVEL: Gravel shall be clean, hard, free from more than five per by weight, of sand,and shall have sizes ranging from one - quarter inch- minimum, up to a size passing through a two -inch ring. Hot less than 30 per cent of its volume shall be material which will pass a three- quarter inch screen. BROKEN WONt: Broken stone shall be the run of the crusher,except however, that not more than five per cent of its volume shall be material which will pass through a one - quarter inch mesh screen, not • less than 30 per cent of its volume shall "be material which will pass a three - quarter inch mesh screen. It shall be clean, hard and durable in quality, and shall range in size from the minimum noted above up to such size as will pass a two inch rings -7.- MIXING AND PLACING CONCRM* MIXING: Except where prohibited by the width of the roadway to be paved, all sizing of concrete shall be done in a batch mixer. ,rho mixer shall be charged with one sack of cement,two ou- bio feet of sand or *tons screenings and not more than four oubio feet of gravel or broken stone at every batch, and in no other man. - nor aaWs unless the mixer is too small to take a batch of this size, in which case measuring devices shall be provided which will uniformly maintain above proportion@. When a mixer as above specified is not used,the material shall be deposited on a tight platform, in layers having an agge ®gate thickness of not greater than twelve inches, and shall then be mixed by turning three times dry and two times wet. PLACING: The concrete shall be of such consistency that it can be spread and run into place with as little tamping as possibls, and spread upon a thoroughly dampened subgrads. Such devices and methods shall be used as are neceessbj to bring the surface of the concrete to true and even grades. FINISHING THE MWACt : After the surface of the concrete pavement has been struck off to the proper cross- sootion,it shall be finished • by rolling and belting in the following order and manner: 0 The roller shall be made of smooth steel, 18 inches in diameter and 6 feet in length, and of a weight not to exceed one pound per inch length of roller. Where the width of the concrete pavement does riot exceed 16 feet, the roller shall be operated by a handle, so designed and used as neither to increase nor decrease the pressure coming upon the concrete from the roller, and for greater widths it shall be operated by ropes. The belt shall be of oanvass— rubber composition, not less than 3 —ply, and shall have a width of ten inches, and a length oot loss than two feet longer than the width of the pavement* Immediately after the surface of the concrete pavement has been struch off width a template, it shall be rolled four times.The time interval between rollings to be not lose than 30 minutes nor more than 40 mi:rutee. The roller at each rolling shall be operated at such an angle with the center line of the pavement, that it advan,- cos along the pavement, two feet for each time across. After the rolling has been oomp leted,the surface of the concrete pavement shall be belted over once, with a combined cross- wise and longitudinal motion, using long,xxt= vigorous strokes of the belt. The longitudinal movement along the pavement being very slight. The surface of the concrete pavement shall be belted a second time, immediately after the water glaze or ahsen disappears. The belting to be of short, rapid, transverse strokes, having a an sweeping longitudinal motions When rolling and belting the concrete surface, care shall be taken that the crown is not worked out of the pavement, not to permit the edges of the belt to dig into the surface, nor in moving the roller to make the lap, not to mar the concrete* —8.— HEADER. Whenever the pavement does not terminate against a curb, gutter, railway track or other pavement, the Contractor shall provide and lay upon the line of said tersWastion, a header plank,two inches thick, and of a depth equal to that shown on the cross- sectione.The top edge of the plank shall canform to the surface of the finished 40 pavement. PROTECTION AND CURING. The pavement shallbe covered with canvass as soon as the • surface finish has been completed, necessary precautions being taken to avoid marring the surface. This canvass covering must remain at least four hours and longer where necessary to prevent checking.The canvass shall be kept wet where it touwhes the pavement. After trite canvass has been removed,the pavement shall be covjered with send or earth to a depth of at least two •nohes and kept wet for a period of not lees than tqp days. No traffic shall be allowed on the pave- ment until fourteen days after it is finished. -10.- GENERAL REQUIRM[ENT$. WORK.- The Contractor shall, for the price bid furnish all the ma- terials and perform all the labor necessary to execute the work in every respect in a thorough and workmanlike manner, in accordance with the plans and specifications and to the satisfaction of the Suporin- tendent of Streets. MATERIALS AND SAMPLES.- All materials must be of specified quality and fully equal to the samples when samples are required. The Contrac- to for shall furnish the City Engineer for teet,whonever called for and free of charge,samples of all materials proposed to be used in the work.Rejeoted material must be immediately removed from the work by the Contractor. LABOR. -Any overeser,superintendent, laborer or other person employed on the work by the Contractor, who shall perform work in a manner contrary to these specifications, shall be discharged immediately and such person shall not again be employed on the work. EXAMINATION OF GROUND. — 'Bidders must examine and judge for themselves as to the location of the proposed work, and the nature of the excays- tion to be made and the work to be done. SETTING STAKES. —The Contractor •hall give 34 hours notice in writing when he will require the services of the City Engineer for laying out any portion of the work. He shall dig all stake holes necessary to give lines aad levels. The Contractor shall preserve all stakes set for the lines, levels or measurements of the work in tteer proper places until authorized to remove them by the City Engineer, and any expense in- ourred in replacing said stakes which the Contractor or his subordi- nates may have failed to preserve shall be borne by the Contractor. PLANS AND SPECIFICATIONS. —The Contractor shall keep upon the work a copy of the plane and specifications, and access thereto shall at all times be accorded the Engineer. INSPECTORS. —?he Contractor shall prosecute work only in the presence of an engineer or an inspector appointed by the Street Superintend•::= and any work done in the absence of said engineer or inspector will ba be subject to rejection. The Contractor shall furnish the engineers and inspectors reasonablexfacilities for obtaining such information as may be necessary to give them full information at all times respedt— ing the progress and manner of the work and the character of the meh terials. PRESERVATION OF MONUMENTS. —The Contractor shall not disturb any monu- ments or stakes found on the line of improvements, until ordered tees[ by the City Engineer, and he shall bear the expense of resetting any monum"s or stakes which may be dists = bed withAut orders* REMOVING OBSTRUCTIONS. —The ContActor shall remove all trees, stones, debris and other i�lffiUone that may be encountered in®aking said improvements. MW t OBSERVING CITY ORDINANCES. -The Contractor shall observe all the or- dinanoss of the City of Newport Beach in relation to the vbstruotion of streete,keeping open passageways and protecting the same where they are exposed or dangerous to travel. BgRRIERS,LIGHTS,ETC., -The Contractor shall take all necessary meas- ures to prodtsot the work and prevent acoldents during construction. He shall maintain and provide all necessary barriere,guarde,temporary bridges, watchmen and lights. CROSS STREETS. -No more than one cross street shall be closed at any one time. PUBLIC UTILITIES. -In case it should be necessary to move the property of any owner of a public utility or franchise, such owner will, upon proper application by the Contractor, be notified by the Street Super- intendent, to move such property within a specified reasonable time, and the Contractor shall not interfere with said property until after the expiration of the time specified. The right is reserved to the owners of public utilities and franchises to eater upon the street for the purpose of making repairs or changes of their property that may be made necessary by the work.The City shall also have the privilege of enterinj upon the street for the purpose of repairing sewers, water and gas pipes, or making house connections therewith, or repairing culverts or storm drains. LOSS OR DAMAGS. -All lose or damage arising from any unforseen ob- struotion or difficulties, either natural or artificial, which may be encountered in the prosecution of the work, or from any action of the elements, or from any anktan act or omission not authorised by these specifications, on the par* of the Contractor, or any agent or person employed by him,shall be sustained by the Contractor. DEFECTIVE WORK.- No work which may be defective in its construction or deficient in any of the requirements of these specificatiGns,will be considered as accepted in consequence of the failure of any officer of the City or engineer or inspector connected with the work, to point out said defeat or deficiency during construction, and the Contractor shall correct any imperfect work, whenever discovered, before the final acceptance of the work. to PROTECTION OF WORK AND CLEANING UP,-The Contractor shall oars for all work until final co npletion and acceptance, He shall remove all surplus material and rubbish from the work after its completion and • before he makes application for the acceptance of the work, FINAL INSPECTION. -The Contractor shall notify the Street Superinteb- dent when he desire@ a final inspection of the work, when the latter Will,, as soon as possible, make the necessary examination, and if the work is found in compliance with these @p@cification@,the Street Superintendent will furnish the Contractor with a certificate to that effect. or ALLOWABLE VARIATION. -When in these specifications a maximum Ci mini- mum, either in sizs,parcentages or thickness, or relating to Quality or character or other matter, is allowed or prescribed, the work shall be accepted as in compliance therewith, if within such maximus or minimum so allowed hereby. DEFINITIONS.- Whenever the word *City* is used in these specifications it refers to the City of Newport Beaohe California. Then the word *Contractors is used in these specifications, it refers to the party or parties of the second part in the agreement for the construction of the work herein specified. Whenever the words "Street Superintendent$ or *City Ehgin@er$ are usad in these speoiticatione, they refer respectively to the Street Superin=- tendent or the City Engineer of the City of Newport Beach, or their au%#orisod agents or inspectors, -11.- The City Clerk shall certify to the passage of this Peso - tion and shall cause the same to be entered in the Book of Resolu- tions and a minute] of the passage thereof in the records of the L a Board of Trustees of the meeting at which it was passed. Adopted and approved thisL_8ay of 1919. 0 • STATE OF CALIFORNIA COUNTY OF ORANGE 8S. OITY OF NEWPORT BEACH ty Clerk of the City of Newp rt Bea ,do he certify that the foregoing Resolution, being Resolution No.,/,a was passed and adopted by the Board of Trustee of the City of Newport Beach,signed by the President of said Board., • and attested by th ity Clerk, all at a regular meeting thereof held on the'i day o 19190 by the following vote,to wit: AYES :Truetses 969, �. C-0 NOES:Trustees �_ ABSENT : Trust s, �i L -7 STATE OF CALIFORNIA ) COUNTY OF ORANGE ) ss CITY OF NEWPORT BEACH) I, C. K. PRIEST, City Clerk of the City of Newport Beach, California, do hereby certify that according to the records of the City of Newport Beach filed and main- tained in my office, the foregoing Resolution No. 105 was duly and regularly adopted, passed, and approved by the City Council of the City of Newport Beach, California, at a regular meeting of said City Council held at the regular meeting place thereof, on the 2nd- day of June to wit: , 19 19, by the following vote, AYES, COUNCILMEN: J.P Greeley, J.J_ Schmitken, Geo.P. Wilson, J.C. McCain, L. S. Wilkinson. NOES, COUNCILMEN: ABSENT COUNCILMEN: None None Dated this 6th day of April , 19 55 City Clerk and Ex- Officio Clerk of the City Council, City of Newport Beach, State of California.