Engineering and Contracting . od blockstreets. Thermal Corrections for Rood Oil By formula; V^-Vol cold OilVj, Vol hof Oil^ - Fahrenheil lemp observedThtn,V^.Vi,-Vi,(tJO,o0o3IbbI- iZgall -- 661 Cu Ft -—? -~- ~~~- L~^ -~~_ .. ^~~- -— —Sj* ? ~~~ ~~^ ^ ^ ^ _^ ^ ^^—_ ^ _____ ~ ^ ^^ ^ ._^ — -%-_ -~~~. \ — ^ ^ ^ ~-^ __ 2 ~~~- — ^ .dio_ — ?~~-- — ?— ^ ~— —- — . U2SS^ —__ , 1 — , 900 —? ~~1 , ^ ? — ..Sgo_ P -= —? —- ZZOO ? -600 — — Z50- SOO 350- 400- 450 F. Temperaiure Observed Diagram for Determining Thermal Corrections for Road Oil. In detemiining the quantity of oil delivered, the correction for ex
Engineering and Contracting . od blockstreets. Thermal Corrections for Rood Oil By formula; V^-Vol cold OilVj, Vol hof Oil^ - Fahrenheil lemp observedThtn,V^.Vi,-Vi,(tJO,o0o3IbbI- iZgall -- 661 Cu Ft -—? -~- ~~~- L~^ -~~_ .. ^~~- -— —Sj* ? ~~~ ~~^ ^ ^ ^ _^ ^ ^^—_ ^ _____ ~ ^ ^^ ^ ._^ — -%-_ -~~~. \ — ^ ^ ^ ~-^ __ 2 ~~~- — ^ .dio_ — ?~~-- — ?— ^ ~— —- — . U2SS^ —__ , 1 — , 900 —? ~~1 , ^ ? — ..Sgo_ P -= —? —- ZZOO ? -600 — — Z50- SOO 350- 400- 450 F. Temperaiure Observed Diagram for Determining Thermal Corrections for Road Oil. In detemiining the quantity of oil delivered, the correction for ex-pansion by heat shall be as follows: From the measured volume of oil received at any temperature above60° F. an amount equivalent to of 1 per cent for every 10° abovesaid 60° F. shall be substracted as the correction for expansion by heat. Vol of CjhrdsrsIc^ ft r/oter = 743aalland^ei3hH&24Jbi5b2 HoodOn-iilga!! ofO,l,nderir Ft. o ^ ^l !..«.> Diagram for Finding Contents of Tanks. For the purpose of measuring this oil. a temperature of 60° F. shallbe deemed normal temperature. The accompanying diagram was devised by E. EarlGlass of the Road Department for applying the thermalcorrection. The following example illustrates the meth- December 6, 1916 Vol. XLVI. No. 23 , od: A tank received measures 1,100 gal. of oil at 375° slant line 1,100 gal. hot oil intersects the 375° verti-cal line at 995 gal., which would be the 60° F. volume ofthe load. The chart is used by the inspectors on roadoiling. The other diagram, also devised by Mr. Glass, is usedfor finding the contents of all ordinary sized tanks usedin road oiling. A METHOD OF GRADE CALCULATIONS FORSTREET INTERSECTIONS. Studies with a view to arriving at better conditionsof easy grade transitions and standard crown for streetintersections have been completed recently by Mr. McMullen, Assistant Engineer, Department of PublicWorks of Portland,
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