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Show lEffOti K TO CLUB K1 hihways arc aWn: tbe . m m. tor m ; Mlffi demands flSof r ml high-1 pB"" 1 probably mllef of city an. m; '!' ,rand total Kf'S ' f traff" ' l.HOCO mile or ' - ' tS anl mess im- B Itsn ff huudr. d ndid on rural RSri d0L,ftrs Sldviwblllty of en-, SJtent and proves-1 .1 bt rained The Barron: the highwav ,.n complex jSdy and lnv,-o- BBkor. ( ctr to 2 ,d construction Is of the subgrade. fart that the of the material JVsill to suUla th, 'Jos It and this fact ,751 larfaec as it Is JtballdlDf Because ivj wbrade "n,:kr -etioae of the most to life of the 5 a factor That ! during both the function Oft PROBLEMS - of the la r - irface ..- - .'renting: th it cj:r!al! rhouhl h r.:.. nl (siKoa c r in BO' tlor ' jj G full width slab K ten the renter" reinforcement Kir tfet design? Shall Ee-jh loads In exlst-HtT exlst-HtT ttiiv and will that Hrc: load of tomorrow Bit' cm the engineer Hesxrsct for' Shall It k'rn or a 100 years" Bj'jr.'. an imposslbilty Li lurfaroj which HfipE Hrrtc more than HiK;i'iry and rIiow Htlht they may give a H(itrria under existing Hnf- tv. v.-ho knows HtcidllioTii and reqjlrc-HtaS: reqjlrc-HtaS: Fill continue to Br of the problems HbtIt arising and be. fc K2rouj Investiga-Hku'.Ur, Investiga-Hku'.Ur, are under way faletoiiy. Ht tat tar, y. ., rs til ere H1 and carried on a Bp1' T'tn: !..-'."J !..-'."J Wfntually result. HUfeal there r-v Iort and that all Hp' prsper tiudy, the J webcII his forrn'd of Mghwav re-K. re-K. Ha" ;.rr,f, s -Paring a; Purdue iff?K'0r- The purpose F"'0 prepar- a coni-?"opam coni-?"opam for hisrh-MJJ hisrh-MJJ istlr.B or-41nate or-41nate their activ-Bfito.eol,wt activ-Bfito.eol,wt nd dlF-HP dlF-HP f wmplte and Hj Wder n w, B?k!? bal ,ner, arc the?, invesij. Hons arc devoted Jto materials, 19 jcr cent to the ileslpn of the road, y per cent to economics, 6 per cent to construction and 2 per cent to I operation. "These investigations nre widely Scattered nnJ r:r-:- hr-ing carried on by I such aj-enclos as the bureau of public I roads, nt Arlington. Va.. by the Illinois division of highway on the Bato.s experimental road near Srinx-f.eld. Srinx-f.eld. III., at the Pittsburg test road I in California, at the Massachusetts Institute of Technology by the United States army quartermaster corps; Yale university; University of Michigan; Michi-gan; Iowa Experiment station, Kansas Kan-sas Agricultural college and in many other places. These Investigations have already Involved tie expenditure expendi-ture of a million dollars and will cost more than an "(ual amount to complete com-plete " Colonel Boyden during the pnst rammer made a careful study of al.l the published reports regarding these Investigations, of the di usBlonfl regarding re-garding tho same in the technical press, has visited' ninny of the large:- I investigations ann oonrerred with the men who are maklnx the tosts M IKES SUGGES1 m1, g. "Although he said, 'many of the in estigal Ions are Incomplete, valuable Information has been obtained to date and some of the conclusion nre outlined out-lined below If the results of these tests are followed in future construction,' construc-tion,' he said, "it will undoubtedly raise the standard of highway paving pav-ing considerably and will prevent j ! failures and relievo the taxpayers from the burden of excessive main-1 tenance and replacement. A list of some of the most important results are as follows; "Uniform bearing power In file sub-grade sub-grade across the entire width of the pavement Is a most essential feature In construction. "The de-sign of the slab should be varied within reasonable limits to meet tho changes in bearing power of the Ruhgrade "Drainage systems and side ditches should be so constructed as to carrv Urface water away quickly and to prevent saturation of the subgrade. "Tile drains under surfaces aro useless use-less in such soils as will not drain. "No pavement should bo eif less width than 10 feet for each line of j traffic, therefore, build 20 feet for two-way. ;u) feet for three-way, etc. "Pavements or bnsos. plain or reinforced, re-inforced, should not be built less than! 6 lnche thick "A minimum thickness of S inches should be used for all Important thoroughfares wh re heavv tmrflc in to use the road. "A thickness of fi or even 10 Inches should be used where subgrade conditions con-ditions are unsal Jsfatcorv and loads are uncontrolled. EXPANSION .JOINTS. "Expansion Joints should be placed in reinforced surfaces at changes ofi alignment and grade and at 100-foot I Intervals on tangents. Plain con- crete surfaces should have joints at 50-foot intervals. ' Longitudinal center joints may be used to prevent longitudinal cracks. In the pavement. "All joints, whether transverse or longitudinal, should have dowels at frequent" Intervals to assist In trans-j f erring loads from one slab to another.! Reinforcement must never be substituted sub-stituted for thickness: "Continuous reinforcement in the, edges of pavements Is of value to, strengthen the corners of the slabs whether formed by joints or by trans-1 verse cracks. Impact of traffic may be increased four fold by a quarter of an Inch ln-. ln-. quality In the surface. The smooth?:- the surface the- less will be the impact. "Impact is the great destroying factor rather than dead weight. "Pneumnllc tires give much less, impact to the road than do solid tires. I especially when tho solid tires are' badlv worn 'The better the quality of the con-; crete tho longer will be tho life or the pavement. "A concrete surface does not wear, down under modern traffic "Finally start your maintenance the day traffic starts and keep It up. a A r nrreri- h n d Cause in creased Impact. Kill It up and add to the life of the pavement." TO liECTURE ENGINEERS. Colonel Boyden has been lecturing in the west for the last few weeks, has broadcasted short lectures from the Salt Iakc radio stntion KUVL; lectured before the engineers of Salt Iake. Mondav evening; at the I'nl-versltv I'nl-versltv of I tah Tuesday morning, and will address the American Association of Engineers at Ogden Wednesday evening on this subject From ogden be will go to Poca-tello. Poca-tello. where he will give three addresses ad-dresses on Thursday at tho Idaho Technical Institute, the Rotary club and the A. A. E. On Friday he will speak to the A. A. E at Boise. Tela, and then returns o Chicago, stopping at Grand Island. Lincoln. Omaha. Dos Moines and Sloux City. Mrs. Bertha Eccles Wright was well received when she read Kipling's "Pink Dominoes." and "The spell of, the Yukon." by Garrett P. Serviss. i Henry Barker delivered a five-minute five-minute talk on the subject of "The Jov to Me In Rotar." President Henry Anderson called the attention of those present to the football game that Is to be played between be-tween the Ogden High school team and the Weber college team at Ixrln, Fnrr park on Armistice day. He paid that John Sparfo had been appointed leader of tho Ogden HiRh school rooters and that someone wasj to be appointed to the same position for the Weber college rooters. There was a large attendance. nr. |