English

Earth roads

24 pages : 24 cm · Cover title · Introduction. pp. 3 -- Location. pp. 4 -- Errors and their correction. pp. 4 -- Disadvantages of heavy grades. pp. 6 -- Limit of grade allowable. pp. 6 -- Questions of material and exposure. pp. 7 -- Drainage. pp. 7 -- Surface drainage. pp. 8 -- Steep slopes. pp. 8 -- Shape of cross section on hills. pp. 9 -- Protection from "gullying". pp. 10 -- Construction of side ditches. pp. 11 -- Cross drains. pp. 11 -- Need of quick drainage. pp. 11 -- Laying culvert pipes. pp. 11 -- Size of culvert pipes. pp. 11 -- Concrete drains and culverts. pp. 12 -- Subdrainage. pp. 13 -- Wet lands. pp. 13 -- Remedy for freezing. pp. 14 -- Depth and fall of subdrains. pp. 15 -- Laying of subdrains. pp. 16 -- Construction. pp. 17 -- Proper cross section. pp. 17 -- Clearing the roadway. pp. 17 -- Width and elevation. pp. 18 -- Treatment of clay roads. pp. 18 -- Treatment of sand roads. pp. 19 -- Importance of rolling. pp. 19 -- Maintenance and repairs. pp. 20 -- Filling holes and ruts. pp. 20 -- Use of road machines in making repairs. pp. 21 -- Use of wide tires and similar means. pp. 21 -- Regular, prompt, systematic attention. pp. 22 -- Values of frequent inspection. pp

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