COEFFICIENT OF SUBGRADE REACTION FOR FOOTINGS ON COHESIONLESS SOILS

Eighty-three standard plate load tests were carried out on dry, poorly-graded, medium to fine sand at Brownville, Nebraska, U.S.A. The values of the coefficient of subgrade reaction, k, for these tests are correlated with the corresponding values of the relative density, dr, determined for the sand at both sides of the plate. The results show that k is exponentially dependent on dr. Sixty plate load tests were carried out at different sites in the U.S.A., England, Australia, Czechoslovakia, Jamaica and Hong Kong. The soils at these sites are different (clayey silty sand, fine to coarse sand, sandy gravel, gravel and decomposed granite). The values of the coefficient of subgrade reaction, k, for these tests are correlated with the corresponding values of the standard penetration n value for each deposit. A probabilistic distribution of the ratio K : n is given. From a comprehensive study of the results of the available plate load tests (143) together with corresponding values of relative density and standard penetration values, ranges are suggested for k corresponding to various degrees of packing of the cohesionless soils. (A) /TRRL/

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/869610732
• Corporate Authors:

  South African Institute of Civil Engineers

  2 Hollard Street
  Johannesburg,   South Africa 
• Authors:
  • Pells, P
  • Robertson, A
  • Bazaraa, A R
  • Howeedy, M F
• Publication Date: 1975

Language

• French

Media Info

• Features: Figures; References; Tables;
• Pagination: 5 p.

Subject/Index Terms

• TRT Terms: Clay; Coefficient of subgrade reaction; Conferences; Density; Footings; Foundations; Granite; Granular soils; Gravel; Pendulum tests; Plate bearing test; Sand; Silts; Soil penetration test; Specific gravity
• Geographic Terms: Australia; Caribbean Area; Czechoslovakia; Hong Kong (China); United Kingdom; United States; West Indies
• Old TRIS Terms: Noncohesive soil
• ITRD Terms: 8006: Australia; 4177: Clay; 5787: Coefficient of subgrade reaction; 8525: Conference; 8027: Czechoslovakia; 5908: Density; 3377: Foundation; 4101: Granite; 4575: Gravel; 8131: Hong Kong; 4109: Non cohesive soil; 6285: Penetration; 6279: Plate bearing test; 4105: Sand; 4149: Silt; 8119: United Kingdom; 8122: USA; 8126: West Indies
• Subject Areas: Geotechnology; Highways;

Filing Info

• Accession Number: 00134339
• Record Type: Publication
• Source Agency: Transport and Road Research Laboratory (TRRL)
• ISBN: 86961 0732
• Report/Paper Numbers: Conf Paper
• Files: ITRD, TRIS
• Created Date: Sep 16 1976 12:00AM