Tham khảo tài liệu 'geotechnical-practice-for-waste-disposal-texas 5', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | CE 5327 - GEOTECHNICAL PRACTICE FOR WASTE DISPOSAL Homework Assignment 5 Due 5 00pm Monday February 21 2005 1. A contractor needs to purchase suitable clayey soil for a landfill soil liner construction project. The landfill liner covers 24 acres and the liner has a thickness of 2 ft. The specifications call for a compaction water content of 18 and a compacted dry density of 110 lb ft3. At the borrow source the soil is sold by the ton not by cubic yard. The water content of the stockpiled soil at the borrow source is a How many tons of soil should the contractor purchase to have exactly the correct volume of compacted material Calculate quantities for 1 sq yd of liner. b How much water should be added for each square yard of completed liner to bring the water content up to the specified value 1 US ton 2000 lbs. 1 acre 43 560 sq ft 2. TAC Chapter 335 Subchapter G Locations Standards stipulate that a landfill may not be located in areas where soil unit s within five feet of the containment structure have a unified soil classification of GW GP GM GC SW SP or SMI The following results were obtained on two types of soils found within 5ft of a proposed hazardous waste landfill base. Classify the two soils according to USCS procedure and hence determine whether there should be a concern with respect to the suitability of the selected site. Sieve Size Percent Passing Soil A Soil B 1in. 100 in. 85 V in. 70 3 8 in. 100 60 48 30 16 10 2 Liquid Limit 30 Non- Plastic Plastic Limit 12 Non- Plastic 3. The following data is available for soils from 4 different sources. In each case determine whether the soil is suitable for clay liner construction. Use criteria specified by TCEQ. If they do meet the requirements indicate your reasons for disqualifying the material. Also mention what problems we may anticipate if we use the material for clay liner construction purposes. a passing No. 10 sieve passing sieve.
