Climate‐Controlled Soil Design Parameters for Mat Foundations
Publication: Journal of Geotechnical Engineering
Volume 116, Issue 7
Abstract
Mat foundation design requires an analysis of the mat when subjected to unsupported regions due to swelling or shrinkage of expansive soils. A study was conducted to investigate simple rational methods for calculating the active zone depth (z) and from it the edge moisture penetration distance in expansive soils. Analysis of soil moisture diffusion assuming a periodic variation in surface‐soil suction indicated that z can be a function of the maximum suction change imposed, minimum suction change considered significant, climate frequency, and field diffusion coefficient. The may be given by where D is the depth of the foundation or perimeter stiffening beam below ground surface. Data required to evaluate z and were obtained from field observations made during an 18‐month study on airport pavements on expansive soils. These climatic parameters may also be used in design of mat foundations supporting structures.
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References
1.
Design and construction of post‐tensioned slabs‐on‐ground. (1980). Post‐Tensioning Inst., Phoenix, Ariz.
2.
“Foundations in expansive soils.” (1983). Technical Manual TM 5‐818‐7, Dept. of the Army, Washington, D.C.
3.
Hartman, J. P., and James, B. H. (1988). “Development of design formulas for ribbed mat foundations on expansive soils.” Technical Report ITL‐88‐1, U.S. Army Engr. Waterways Experiment Station, Vicksburg, Miss.
4.
Lambe, T. W., and Whitman, R. V. (1969). Soil Mechanics. John Wiley and Sons, New York, N.Y., 412.
5.
Lytton, R. L. (1970). “Design criteria for residential slabs and grillage rafts on reactive clay.” Report for the Australian Commonwealth Scientific and Industrial Research Organization, Div. of Appl. Geomechanics, Melbourne, Australia, Nov.
6.
McKeen, R. G. (1981). “Design of airport pavements on expansive soils.” DOT/FAA/RD‐81/25, Systems Res. and Development Service, Federal Aviation Admin., Washington, D.C.
7.
McKeen, R. G. (1985). “Validation of procedures for pavement design on expansive soils.” DOT/FAA/PM‐85/15, Program Engrg. and Maintenance Service, Federal Aviation Admin., Washington, D.C., Jul.
8.
McKeen, R. G., and Hamberg, D. J. (1981). “Characterization of expansive soils.” Transportation Research Record 790, Transp. Res. Board, Nat. Academy of Sci., Washington, D.C.
9.
McQueen, I. S., and Miller, R. F. (1968). “Calibration and evaluation of a wide‐range gravimetric method for measuring moisture stress.” Soil Sci., 106(3), 225–231.
10.
Mitchell, P. W. (1979). “The structural analysis of footings on expansive soil.” Research Report No. 1, Kenneth W. G. Smith and Associates, Adelaide, South Australia.
11.
Mojekwu, E. C. (1979). “A simplified method for identifying the predominant clay mineral,” thesis presented to the Texas Tech. University, at Lubbock, Tex., in partial fulfillment of the requirements for the degree of Master of Science.
12.
Russam, K., and Coleman, J. D. (1961). “The effect of climatic factors on subgrade moisture condition.” Geotechnique, London, England, 3(1), 22–28.
13.
Schofield, R. K. (1935). “The pF of the water in soil.” Trans., 3rd Int. Congress of Soil Sci., Soil Science Society of America, 2, 37–48.
14.
“Selection of design parameters for foundations on expansive soils.” (1987). Contract Report, U.S. Army Engr. Waterways Experiment Station, Dec.
15.
“Soil survey laboratory methods and procedures for collecting soil samples.” (1972). Soil Survey Information Report No. 1, Soil Conservation Service, U.S. Dept. of Agr., Apr.
16.
“Soil survey laboratory data and descriptions for some soils of California.” (1973). Soil Survey Investigations Report No. 24, Soil Conservation Service, U.S. Dept. of Agr., Jun.
17.
“Soil survey laboratory data and descriptions for some soils of Arizona.” (1974). Soil Survey Investigations Report No. 28, Soil Conservation Service, U.S. Dept. of Agr., Aug.
18.
“Soil survey laboratory data and descriptions for some soils of Texas.” (1976). Soil Survey Investigations Report No. 30, Soil Conservation Service, U.S. Dept. of Agr., Jan.
19.
Skempton, A. W. (1953). “The colloidal activity of clay.” Proc. of the Third International Conference on Soil Mechanics and Foundation Engrg., International Society for Soil Mechanics and Foundation Engineering, 1, 57–61.
20.
Thornthwaite, C. W. (1948). “An approach toward a rational classification of climate.” Geographical Review, 38(1), 54–94.
21.
Watt, W. G., and Steinberg, M. L. (1972). Measurements of swelling clay in a ponded cut, Research Report 118‐6, Center for Highway Research, Univ. of Texas at Austin, Jun.
22.
Wray, W. K. (1978). “Development of a design procedure for residential and light commercial slabs‐on‐ground constructed on expansive soils,” dissertation presented to Texas A&M University, at College Station, Tex., in partial fulfillment of the requirements for the degree of Doctor of Philosophy.
23.
Wray, W. K. (1987). “Evaluation of static equilibrium soil suction envelopes for predicting climate‐induced soil suction changes occurring beneath covered surfaces.” Proc. of the 6th Int. Conference on Expansive Soils, International Society for Soil Mechanics and Foundation Engineering, Dec., 1–3.
24.
Wray, W. K. (1989). “Mitigation of damage to structures supported on expansive soils.” Report to the National Science Foundation, Texas Tech. Univ., 1–3 (Mar.).
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Copyright © 1990 ASCE.
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Published online: Jul 1, 1990
Published in print: Jul 1990
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