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CC RESOLUTION 31r 282 RESOLUTION NO. 31 SECPION 1. A RESOLUTIOP 07 THE B0ARD OF TRUSTEES OF THE CITY OF EL SWUM, OnlIFORNIA, ADOPTING SPEWPICATIONS NO. 6_ FOR INTPROVIivG STREETS IU SAID CITY TITH `IILLITE PAVEEEUT. BE IT RESOLVED by the Board of Trustees of the City of E1 Segundo, California, that the following Specifications, being, and to be known as "Specification No. 6 - " for improving streetz in said city with Willite Pavement, be and the same are hereby adopted and ordered filed: - 1 - PLATS, ETC. The work herein provided for is to be done in accordance with the plans, profiles and cross - sections on file in the office of the City Engineer of the City of E1 Segundo, and in accordance with the ordinance therefor and all work shall during its progress and on completion, conform to the lines and levels which may from time to time, be given by said City Engineer. - 2 - WE. The work to be done as follows: 1. To eseavate or fill in the area upon which the pave- ment hereinafter provided for, is to be constructed, to such an extent and in such a manner as may be required by the plans, profiles, cross- sections and specifications. 2. To lay thereon the pavement as provided for hereinafter. 3. To furnish all the materials necessary to perform said work. 4. To do whatever else is required by these specifications. - 1 - - 3 - SUB- GRADE. The sub -grade for that portion of the roadway which is to be paved shall be such distance below and parallel with the finished surface thereof as is shown upor_ the adopted cross- section. - 4 - GRADI RG . Grading shall include all filling., the removal of all earth, stone or all other material, of whatever nature it may be, that may be encountered in preparing the street, and shall alsc include all trimming and shaping to bring the surface of the street to grade and cross - section. "Then mud or other soft material is encountered, it shall be taken out and the space filled .,dth good earth or gravel, which 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 greater than two (2) feet below sub- grade. gravel. All filling shall be done with good sound earth or Whenever a fill is to be made, the embankment shall be brought up in layers not exceeding one (1) foot in depth and each layer shall be thoroughly dampened and rolled with a roller weighing not less than two hundred (200) pounds per lineal inch width of tire until it is firmly compacted. When spacial flooding is required, the Contractor shall perform the same in accordance with the requirements as speci- fied on the plans. No material of a perishable nature, spongy or otherwise improper nature shall be used in filling. The space over which fills are to be *Wade shall first be cleared of all brush, timber trash or debris unfit for foundation. - 2 - During the progress 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 whole surface of the street. Not more thar one -half mile in length of any street shall be ploughed up before the layint of the base is begun; nor shall more than one -half mile in length of any street be ploughed up in advance of the laying of the base, except where there are car tracks on the street, in which case one side shall be held intact until the base is begun on the other side. The Contractor shall at all times maintain proper drainage in the street. The width of the street to be graded, unless otherwise specified on the plans or in the ordinance of intention, shall be held to mean the entire width of street from property line to property line, but the roadway between the curbs and property lines shall be finished for its use as specified herein. The spaces between the curbs and the property lines in cases where no concrete walks are laid, shell be graded to a plane rising at a rate of three (3) Inches in ten (1C) feet from the grade at the curb line, and in cases where concrete walks are constructed the spaces between the curbs and A,ralks or between the walks and the property lines, shall be surfaced evenly with the tops of the curbs and the walks, but said space shall not be rolled. After a block or section has been graded, as above specified the surface of the roadway shall be thoroughly drenched with water and when sufficiently dry shall be rolled with a power roller weighing not less than four hundred (400) pounds to the lineal inch width of tire until 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. - 3 - Such portions of the roadway 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, shall 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. The Contractor shall notify the City Engineer when a block or section has been brought to the requireisub -grade and cross - section, when the latter will check the elevation of the same, and if the work is found to be in accordance with these specifications and the grades given, the City Engineer shall issue a certificate of the same which shall be filed in the office of the street Superintendent, whereupon the Contractor shall proceed as hereinafter provided. The base shall be a lillite base, if so determined by the resolution of intention. The said pavement may be laid without a base if said resolu- tion of intention so provides. - 5 - YWILLITE PLASTIC COMPOSITION BASE. 17illite base shall be composed of asphaltic cement, sand, copper sulphate and stone dust, the different ingredients being mixed in such proportions that the percentage composition, by weight, of the composition base shall be within the follow- ing limits; (1) Bitumen soluble in carbon disulphide between 6 per cent and 8 per cent. (2) Copper Sulphate (commercial) 2'o to 3o of the total asphaltic contents. The copper Sulphate to be used in the manufacture of LWillite Plastic Composition shall contain at least 98 per cent pure copper sulphate. (3) Sand and stone dust as follows: Passing screen of 200 mesh to the inch, between 1 per cent and 5 per cent. - 4 - , Passing screen of 80 mesh to the inch and rejected by screen of 200 mesh to the inch between 3 per cent and 20 per cent. Passing screen of 50 mesh to the inch and rejected by screen of 80 mesh to the inch, between 15 per cent and 30 per cent. Passing screen of 30 mesh to the inch and rejected by screen of 50 mesh to the inch, between 30 per cent and 70 per cent. Passing screen of 20 mesh to the inch and rejected by screen of 30 mesh to the inch, between 2 per cent and 20 per cent. Passing screen of 10 mesh to the inch and rejected by screen of 20 mesh to the inch, between 0 per cent and 8 per cent. At least 3 per cent, and not more than 5 per cent of the Willite composition base mixture shall be either Portland cement or dust manufactured from granite river boulders, lime- stone, sandstone, or trap rock, as the contractor may elect. If the composition contains the ingredients aforesaid and within the percentages above fixed, it will be accepted as in compliance with this paragraph. ASPHALTIC CEPYT. The asphaltic cement shall be a mixture of a refined liquid asphalt with a refined solid asphalt, or be an oil asphalt, and must be free from a mixture with any residues obtained by the artificial distillation of coal, coal tar or paraffine oil. The asphaltic cement must be homogeneous and its con- sistency at the time of its use must fall within the limits of forty (40) degrees and seventy -five (75) degrees penetration by the District of Columbia Standard. It must be adhesive and ductile, and also slightly elastic at a temperature of thirty - two (32) degrees Fahrenheit. When twenty (20) grammes are heated in an oven to a temperature of three hundred and twenty five (325) degrees Fahrenheit for five consecutive hours in an - 6 - uncovered cylindrical tin dish two and one tenth (2.1) centi- meters high by six (6) centimeters inside diameter, it must not lose more than eight- tenths (8/10) of one (1) per cent in weight, and its penetration must not be reduced, as a result of such heating, more than fifty (50) per cent. It must when ready for use, contain at least ninety nine and eight - tenths (99.8) per cent of bitumen soluble in carbon disulphide. The bitumen soluble in carbon disulphide must be soluble to the extent of at least ninety -nine (99) per cent in a solution composed of 135 milligrams of bromine to 100 cubic centimeters of carbon disulphide, when twenty -five cubic cen- timeters of the solution are poured on two (2) grams of the asphaltic cement in an Erlenmeyer flask, which is then shaken in the dark for three (3) minutes, the solution being immediately filtered through a Gooch Crucible using a suction equal to a column of mercury not more than eight (8) inches high. When the solution has all passed through the crucible, the crucible is washed with pure carbon disulphide dried at from two hundred and twelve (212) to two hundred and twenty (220) degrees Fahrenheit and weighed. The amount of bromine in the carbon disulphide solution is determined by adding to twenty -five (25) cubic centimeters of the solution about twenty -five (25) cubic centimeters of water and excess of potassium iodide crystals and then titrating by a decinormal solution of sodium thiosulphate. Not less than seventy (70) per cent shall be soluble in eighty -six (86) degrees naptha and one hundred and fifty (150) cubic centimeters of the solvent are poured on one -half (1/2) gramme of asphaltic cement which has previously been dissolved in one cubic centimeter of carbon disulphide and the solution allowed to stand for ten (10) minutes, during which time it is occasionally shaken, at a temperature of twenty -five (25) degrees centigrade. Then the asphaltic cement is prepared by mixing a solid oil asphalt with a liquid asphalt, the solid oil asphalt shall be prepared by distilling the crude oil until the asphaltic residuum has a penetration not less than forty degrees by the District of Columbia standard, and shall not be prepared by mixing or fluxing a more solid asphalt with a liquid or softer asphalt. The refined liquid asphalt used in softening a solid asphalt must be a stiff residuum of petroleum oil with an asphalt base. It must be free from water and from light oils volatile at less than two hundred and fifty (250) degrees Fahrenheit. When twenty (20) grammes are heated in an oven to a temperature of three hundred and twenty -five (325) degrees Fahrenheit for five (5) consecutive hours in an uncovered cylindrical tin dish two and one -tenth (2.1) centimeters high by six (6) centimeters in diameter, it must not lose more than two (2) per cent in weight. It must contain not less than ninety -nine and eight- tenths (99.8) per cent of bitumen soluble in carbon disulphide. SAND. The sand for the 7illite Plastic Base shall be clean hard - grained and sharp, and shall contain not more than 8 per cent of loam, clay or other earthy impurities. It must all pass a ten (10) mesh to the inch screen, and when ready to be incorporated in the asphaltic cement shall contain not more than 80 of material passing a screen of 200 meshes per lineal inch. STONEDUST. The stonedust may be a finely powdered limestone or other hard and durable rock or Portland cement, as the Contractor elects, and shall be of such fineness that all of it will pass a ten (10) mesh to the inch screen and at least sixty (60) per cent shall pass a two hundred (200) mesh to the inch screen. - 7 - Of the stonedust passing the 20o mesh screen, not less than 650 shall be impalpable dust known as filler as determined by the following test: Into a beaker having an internal height of 4 1/2 inches, an internal diameter of 3 1/4 inches, is weighed 5 grammes of the 200 mesh material. The beaker is then filled with dis- tilled water to within one inch of the top, then agitated with a blast of air. CTher the material has been well agitated, it is allowed to settle for 15 seconds. The water is drawn off in the following manner: A glass tube having an internal diameter of 3/8 inches is bent at two right angles, the shorter arm is placed at such depth in the beaker that its lower end is within 1/2 inch of the bottom of the beaker and equi- distant from the sides. The longer arm extends below the bottom of the beaker. The rate of flow from the beaker is regulated by a stop cock or other device that will empty the beaker to the bottom of the tube in the beaker at a uniform rate in 15 seconds. The beaker is filled with the distilled water, agitated and drawn off as above specified three times when the residue is dried, the amount of filler determined by difference and the percentage calculated. SAMPLES. The contractor shall furnish to the Street Superintendent for test, whenever called for and free of charge, samples of all the materials entering into the composition of the pavement, the asphalt and asphaltic cement to be furnished in boxes and said Street Superintendent shall have access at all times to all branches of the work. All tests shall be open to the Contractor. - 8 - - 6 - PRE.PARING THE MLLITE BASE. The asphaltic cement, stonedust, copper sulphate and sand shall be accurately weighed in the proper proportion by means of suitable scales before being dumped into the naming box. The sand shall be heated in suitable driers to a temper- ature between three hundred (300) and four hundred (400) degrees Fahrenheit. The hot sand, copper sulphate and cold stone dust shall then be thoroughly mixed together dry in a suitable mixer for not less than 15 seconds. The necessary quantity of asphaltic cement previously heated to between two hundred and eighty (280) and three hundred and fifty (350) degrees Fahrenheit shall then be added, and the whole mass shall be mixed until every particle of the sand, copper sulphate, and stonedust is thoroughly coated with a thin layer of asphaltic cement. In no case, after refining shall the asphaltic cement be heated above three hundred and fifty (350) degrees Fahrenheit. The mixing of the various ingredients shall continue for not less than one minute including the dry mix, with paddles rotating at not less than 70 nor more than 90 revolutions per minute. The material so produced must leave the mixer at a temperature between two hundred and eighty (280) and three hundred and fifty (350) degrees Fahrenheit, and must be fine grained and capable of producing a compact pavement. - 7 - LAYING THE 112714 TE BASE. The Willite Plastic Oomposition, prepared as above specified shall be brought to the work and shall not be colder than two hundred and fifty degrees (250) Fahrenheit nor hotter than three hundred and fifty (350) degrees Fahrenheit when it reaches the place of the improvement where it will be deposited. When the 4'lillite material arrives at the job, it shall at once be uniformly spread as hereinabove specified, with hot shovels and hot rakes to such a depth that after receiving its ultimate compression, said layer of the Tillite base will be of a thickness not less than that shown upon the cross- section adopted for the work. Rakes used for this purpose shall have strong teeth and of a length sufficient to penetrate through the entire thickness of the layer of the pavement. After spreading the layer of the pavement it shall be thoroughly rolled by a steam or gasoline roller having an effective, com- pressive weight of not less thar, eight (8) tons. Diagonal or cross - rolling shall be done whenever possible. All rolling shall be done in a manner to give true uniform surface to the finished pavement and until no further compression is shown under the wheels of the roller and the rolling shall be carried on continuously until the 'Sillite Base is so compressed. All places that are inaccessible to the roller must be tamped with hot iron tampers. The resulting base must show a close grained, even and smooth surface, true to grade and cross - section and free from all hollows and inequali- ties. - 8 - MIL11 TE TWI17G 3URFACE. Upon the base prepared and laid as hereinabove described and thoroughly swept clean from all dust and rubbish the ",rillite wearing surface shall be laid in the manner herein- after described, or in the event that it is laid without a base, then it shall be laid upon the sub -grade prepared as hereinbefore specified. It shall be composed of asphaltic cement, sand, copper sulphate and stone dust, the different ingredients being mixed - 10 - in such proportions that the percentage composition, by weight, of the wearing surface shall be within the following limits: (1) Bitumen soluble in carbon disulphide between 6 per cent and 9 per cent. (2) Copper Sulphate (commercial) 20 to 3e of the total asphaltic contents. The copper sulphate to be used in the manufacture of CFillite Plastic Composition shall contain at least 98 per cent pure copper sulphate. (3) Sand and stone dust as follows: Passing screen of 200 mesh to the inch, between 1 per cent and 9 per cent. Passing screen of 80 mesh to the inch and rejected by screen of 200 mesh to the inch between 3 per cent and 20 per c ent . Passing screen of 50 mesh to the inch and rejected by screen of 80 mesh to the inch, between 15 per cent and 30 per cent. Passing screen of 30 mesh to the inch and rejected by screen of 50 mesh to the inch, between 30 per cent and 70 per cent. Passing screen of 20 mesh to the inch and rejected by I screen of 30 mesh to the inch, between 2 per cent and 20 per cent. Passing screen of 10 mesh to the inch and rejected by screen of 20 mesh to the inch, between 0 per cent and 8 per cent. At least 3 per cent, and not more than 9 per cent of the Willite wearing surface mixture shall be either Portland (o4 4i"evess syual to the fl"wness of 110{t)"4 calnewt) Cement or dust manufactured from granite river boulders, lime- stone, sandstone or trap rock, as the contractor may elect. If the composition contains the ingredients aforesaid and within the percentages above fixed, it will be accepted as in compliance with this paragraph. ASPHALTIC CANT. The asphaltic cement shall be a mixture of a refined liquid asphalt with a refined solid asphalt, or be an oil asphalt, and must be free from a mixture - 11 - with any residues obtained by the artificial distillation of coal, coal tar or paraffine oil. The asphaltic cement must be homogeneous and its con- sistency at the time of its use must fall within the limits of forty (40) degrees and seventy -five (75) degrees penetration by the District of Columbia Standard. In all other respects the asphaltic cement shall be the same as hereinbefore pre- scribed for Willite Plastic Composition base, shall be prepared in the same manner, shall meet the same tests and be handled as prescribed for said Willite Plastic Composition Base. The sand, stone dust, and copper sulphate for the wear- ing surface shall be identical in character with those pre- scribed for the "Tillite Base. The above prescribed ingredients of the wearing surface, in the proportions above enumerated, shall be weighed, heated, mixed, and laid according to the pro- visions hereinbefore set forth with reference to mixing and laying the TTillite Base, and subject to the tests hereinbefore set forth for Willite Plastic Composition Base. The said wear- ing surface shall be of a thickness not less than that shown upon the cross section adopted for the work. It shall be delivered upon the job, spread and laid in all respects in the same manner and subject to the same specifications hereinabove set forth for a Willite Plastic Composition Base, save as the ingredients vary therefrom as has been hereinbefore fully set forth. In the event that the resolution of intention provides for Willite pavement in a single course it shall be laid upon the finished sub -grade without a base. It shall in such case have the same composition hereinbefore set forth for Tillite Plastic Composition Wearing Surface and all of the materials used therein shall meet with the requirements and be subject to the tests thereinabove set forth for Willite Plastic Com- position ldear3.ng Surface. Such Willite pavement in a single - 12 - 1 course shall be of a thickness not less than that shown upon the cross - section adopted for the work. It shall be delivered upon the job, spread and laid in all respects in the same manner as hereinabove set forth for a Willite Plastic Composition Base. - 9 - TRAFFIC. No traffic shall be allowed on the street until the pavement is thoroughly rolled and set. All cold joints shall be painted with hot asphaltic cement. - 10 - H-WER. 'Thenever the pavement does not terminate against a curb, gutter or other improvement of a substantial nature, the Contractor shall provide and lay upon the line of said termination, a header of plank two (2) inches thick and of a width equal to the thickness of the pavement. The top edge of the plank shall conform to the cross - section of the finished street. - 11 - GENERAI, REQUIREMENTS. I90RK. The Contractor shall for the price bid, furnish all the material and perform all the labor necessary to execute the work in every respect in a thorough, workmanlike manner, in accordance with the plans and specifications and to the satisfaction of the Street Superintendent. MATERIALS AND SAIP1ES. All materials must be of speei- Pied quality and fully equal to samples when samples are re- quired. The Contractor shall furnish to the Street Superintend- ent for test, whenever called for and free of charge, samples of all the materials proposed to be used in the work. Rejected - 13 - , material must be removed immediately from the work by the Contractor. LABOR. Any overseer, superintendent, laborer or other person employed on the work by the Contractor, who shall per- form his work in a manner contrary to the specifications shall be discharged immediately, and such person shall not be employed on the work again. EXAMNATION OF GROUND. Bidders must examine and judge for themselves as to the location of the proposed work, the nature of the excavation to be made and the work to be done. SETTIYG STAKES. The Contractor shall Five twenty -four (24) hours notice in writing when he will require the services of the City Engineer for laying out any portion of the pork. He shall dig all stake holes necessary to give lines and levels. The Contractor shall preserve all stokes set for the lines levels or measurements of the work in their proper places until authorized to remove them by the City Engineer, and any expense incurred in replacing said stakes rhich the Contractor or his subordinates may have failed to preserve shall be borne by the Contractor. PLANS AND 212LOIFICATIONS. The Contractor shall keep upon the work a copy of the plans and specifications, and ac- cess thereto shall at all times be accorded the Engineer. INSPECTOP,S. The Contractor shall prosecute cork only in the presence of the Street Superintendent or an inspector appointed by the Street Superintendent, and any ^,ork done in the absence of said Street Superintendent or inspector will be subject to rejection. The Contractor shall furnish the engineers and inspectors reasonable facilities for obtaining such information as may be necessary to give them full inform- ation at all times respecting the progress and manner of the work and the character of the matarials. PRSSERV.LTION OF MOITU=TS. The Contractor shall not - 14 - ti P disturb any monuments or stakes found on the lire of the improvements until ordered by the City Engineer, and he shall bear the expense of resetting any monuments or stakes which may be disturbed without orders. REMOVING OBSTRUCTIONS. The Contractor shall remove all trees, stones, debris and other obstructions that may be encountered in making said improvements. OBSERVING CITY ORDINAN03S. The Contractor shall observe all the ordinances of the City of E1 Segundo in rela- tion to the obstruction of streets, keeping open passageways, and protecting the same where they are exposed or dangerous to travel. BARRIERS, LIGHTS, ETC. The Contractor shall take all necessary measures to protect the work and prevent accidents during construction. He shall provide and maintain all necess- ary barriers guards, temporary bridges, watchmen and lights. CROSS STREETS. No more than (1) 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 Superintendent 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 enter 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 entering upon the street for the purpose of repairing sewers, culverts �W storm drains Tn4lm� *Ym4h, -y boo" c.�lroeti�erls therewith DEFECTIVE FORK. No work which may be defective in its construction, or deficient in ar_y of the requirements of these specifications, will be considered as accepted in consequence - 15 - of the failure of any officer of the City or inspector connect- ed with the work to point out said defects or deficiency during construction, and the Contractor shall correct any imperfect work, whenever discovered, before the final acceptance of the work. PROT3CTION OF WORK AND CLEARING UP. The Contractor shall care for all work until final completion 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. FINA1 INSPECTION. The Contractor shall notify the street Superintendent when he desires a final inspection of the work, when the latter will as soon as possible make the necessary examination and if the work is found to be in com- pliance with these specifications, the Street Superintendent will furrish the Contractor with a certificate to that effect. ATLO'7ABLS VARIATIOm, mlhen in these specifications maximum or minimum, either in size, percentage or thickness, or relating to quality or character or other matter, is allow- ed or prescribed the work shall be accepted as in compliance therewith if within such maximum or minimum so allowed hereby. DEFINITIONS. M enever the word "City" is used in these specifications it refers to the City of E1 Segundo, California. ijfhen the word "Contractor" is used in these specifi- cations, it refers to the party or parties of the second part in the agreement for the construction of the work herein speci- fied. 7henever the words "City Engineer" or "Street Super- intendent" are used in these specifications, they refer respectively to the City Engineer or the Street Superintendent of the City of E1 Segundo, or their authorized agents or inspectors. - 16 - SECTION 2. The City Clerk shall certify to the passage of this Resolution and shall cause the sane to be entered in the Book of Resolutions of the Board of Trustees of the City of E1 Segundo, California, and shall make a minute of the passage,and adoption thereof in the Records of the Proceedings of the Board of Trustees of said City, in the minutes of the meeting at which the same is passed and adopted. This resolution shall take effect immediately. Passed and adopted this 29th day of )ece,,ioer , 19 20 �3 ATTEST: President of the Bo Jd of Trustees City Clerk. of the City of El Se €undo, Calif. STATE OF CALIFORNIA ) COUNTY OF LOS ANGZL33 CITY OF LL SEGUNDO. I, Victor V. flcCart�, City Clerk of the City of E1 Segundo, California, do hereby certify that the foregoing Resolution, being Resolution No 31 , was passed and adopted by the Board of Trustees of the City of E1 Segundo, California, signed by the President of the said Board and attested by the City Clerk, all at a resular meeting of the said Board held on the 29 day of -December 1920, and that the same was passed and adopted by the following vote: AYES: Trustees, hinder, 3rvson, j)avis, ,l iey x ijueger. NOES; Trustees, iy'one. ABSENT: Trustees, idone. City Clerk of the C ty F,1 Segundo, California. - 17 -