Show 11 I 1 DEPTH OF MACADAM vila the tb the th orwar she th am of f th B alax tb ur LA LJ vy 00 called macadam rood roads con dot of A few inched of broken dims laid coulbo of the ground without may ny proT ildrA for preventing the stones from rota oder der the pressure of godf there should cw be inada made a reach trench 0 o the th width and depth intended for the roadbed for light graffia six ix laabes of joae stone an a ewd foundation will answer but for or heavy thic ibis ij is not sum cleat the anaro pre astare of a load over a compact road spreads out the body beirth beat eath in ton alike form the apex delegat the load on with of bet 0 8 lachel abe weight at the beuna will ba spread read out over 34 if it it to 1 9 incites deep the an tb 0 will thread abets ore 41 I 1 square inches and it if IS inches drep it over ever span inabel deu f it 1 a the arr area of ec the ta buu baft 11 a tue the beighl cl the load increases as the square of the cwb A road 13 inae adeep Is four gini led as p ui deep |