Question

Zin 2. The Undisturbed soil at a given borrow pit is found to have the following parameters. The water content is 15%, the void ratio is 0.60 and the specific gravity of the solids is 2.70. soil from this borrow pit is to be used to construct a rolled fill having a finished volume of s0.0 The soil is excavated by means of a shovel and dumped on trucks. When loaded to trucks are found to contain, on average, a net weight of wet soil equal to 13,000 lbs. capacity these In the construction process, the trucks dump their load on the fill, the material is spread and broken up, thoroughly mived by meansof di or othersinilar oquipment) and then compacted unil the diey unit . The soil and water are thoroughly mixed by means of dicers (or other similar equipment) and then comp ht -110 Ibs/f. Helpful Conversions (3ft-lyd), (tw-62.4 lbs/ft), (7.48gal/1f) a) Assuming that each load is a capacity load, how many truck loads are required to construct the fill? fill? by evaporation, hauling and handling is negligible? volume appreciably, what will be its saturation moisture content? 1 5%? b) What is the volume in yd of material that must be removed from the borrow pit to construct the c) How many gallons of water will have to be added per truck load assuming that the moisture lost d) If the fill should become saturated at some time subsequent to construction and does not change e) What will be the saturation moisture content if the soil swells to increase its original volume by

Answer 1

soioPo G = 2구。 1+e 3 6 7-3

Sola ds Ras wie nuwer MS TotaL onahb

buck - To tal mO tuck Load 1-70775 x )。 3600 Nt ס13136.538 IN Ans(a) 6-32644. 82 d 3 volume bosa pit stomoved v - (140%) 326 4482 V - 52 2 312 3 ANS

3 fts W hem w= 18% .. . Ms

Amaunt coatex addeel coater added 13137

·チ 22. 22%! ANS