Show I I I I I I I I ROAD OILING COSTS SIS EQUAL UAl Contractors State Spend SpendS S Same me Total for Each Mile Mil e Records kept b by E. E C C. Jerry Knowlton maintenance engineer for forthe tho the state highway department show that the tho state and contractors did respective oiling projects at ap approximately approximately ap- ap proximately the th same samo cost per pel mile The aver average e for oiling 1295 miles mlles of oC road in 19 1929 9 three inch oil and arid gravel mulch was 1959 per mile Tho average on one state Job was on another state Job the average was per mile while the he contractors' contractors average was per mile Deducting tho difference In n the cost of oC oil at tho the point of ot delivery and the difference In the work which the state required the contractor to do on the ditches and shoulders and the state jobs would average approximately 1900 r a mile TOTAL OTAL The Tho total cost of or oiling tho the 12 1295 1235 5 miles last year car was It cost to put th the roads in shape to oil bringing the total expense for forthe forthe forthe the improvement up to 4 In some cases it was necessary to put on a full six-Inch six gravel base In others lesser Jesser amounts were sufficient I- I cleat clent to bring the tho gravel to tho the re required required required re- re thickness Of or tho the mone money spent directly for tor oiling was spent for or oil oU delivered to the thc siding nearest the tho Jobs This was an average of oC 76 per mile mno on tho oil on Itself Figures Indicate that gallons gal sal Ions lons of at oil were used on each mile I or of road This amount varies somewhat somewhat somewhat some some- what since clean gravel bravel takes less Jess oil than titan gr gravel vel containing silt sUt AVERAGES Hauling heating and spreading the oil on tho gravel gra cost an average average aver aver- age of ot 2925 per mile mlle Scarifying the road cost per mile Engineering work done dono In road district No 1 l oiling pi projects ejects averaged averaged aver aver- aged aed 1005 a a mile In district No 2 Z 31 6 p per f mile mUe in the tho contract work per mile The state furnished some some- supervision in tho contract Jobs which was not cliar chargeable charge e.- e. able to the Uie contractor In putting the shoulders on to the oiled road there is a a. wide variation In iTt the tile costs The Tho state crews spent and against chargeable to the contractors In Inthis Inthis this case lSe however the state built tho the full futI shoulder while tho contractor contract contract- or only was required to put shoulder enough to protect the edge of the theall oil all strip The state and the tho contractors w were re practically together In tho the cost per mile on scarifying but the tho contractors contractors contractors con con- tractors were much higher than the state in heating hauling and spreadIng spread spread- Ing It cost the contractors an nn average average aver aver- n age e of ot 3 per mile to do this The sate crew in district No 2 did it for for a mile mite and in district No 3 S for STATE PROVIDES OIL Tho The state furnished the oil in nfl all cases Th The difference renco In expense on the tho various Jobs for this item was largely a difference in tho the cost of ot tm transportation H H. H S. S I Kerr engineer Cl for the state hl highway hway department declares that aside from th the benefit oiled gravel gravelIs Is to the traveling public the oiling is 15 economical In that It prevents the grinding up and the blowing blowIng- away of the tho gravel and this means a considerable con con- saving saving- over a period of ot time State figures are not complete enough yet t to indicate whether oIlIng oilIng ollIns oIl oIl- Ing Ins will actually pay for Itself in maintenance 5 |