Moduli and Settlement comparisons

MODULI and SETTLEMENT COMPARISONS

M in ONSOY Clay (Norway) Norwegian Geotechnical Institute	M in Tokyo Bay Clay Geotechnical Research Center Kiso-Jiban Consultants Co., Tokyo
'In Situ Investigation Techniques' report 40019-28, (1986)	Iwasaki (1991)
M in Sites in Virginia, U.S.A.	M in Bangkok Clay
Failmezger (1999)	Seah & Rasheed
DMT - calculated vs observed SETTLEMENTS SCHMERTMANN, 1986 - 16 CASE HISTORY	DMT - calculated vs observed SETTLEMENTS
Proc. In Situ '86 ASCE Spec. Conf. VIP, Blacksburg, p.303.	Hayes J.A. (1990)

Other comparative case-histories on settlement and moduli:

Lacasse & Lunne (1986) "Dilatometer Tests in Sand". Proc. In Situ '86 ASCE Spec. Conf. Virginia Tech, Blacksburg.
The Authors analyse the "settlements under a silos at a sandy site" and report "very good agreement between DMT-predicted and measured settlements".

Steiner W. (1994) "Settlement Behaviour of an Avalanche Protection Gallery Founded on Loose Sandy Silt", Settlement '94 ASCE Conf. Texas A&M:
"an earthfill on a loose sandy-silt produced settlements substantially higher than anticipated based on conventional soil borings. DMT were then performed. The DMT-predicted settlements agreed well with observed settlements".

Failmezger R., Rom D., Ziegler S.B.(1999) "Behavioral Characteristics of Residual Soils. 5 case-histories comparing settlement predictions by SPT and DMT" ASCE Geot. Special Pub. No. 92, Edelen, ASCE, Reston, Virginia:
"At Blacksburg Bypass SPT predicted 100 mm settlements, while DMT predicted 27 mm, leading to change in design and large savings. Generally SPT overpredicted settlements" (in one case by a factor 10).

Pelnik, Fromme, Gibbons, Failmezger (1999)."Foundation Design Applications of CPTU and DMT Tests in Atlantic Coastal Plain Virginia".

KCI Technologies, Md, Usa (2000): "By DMT a more cost effective design can result compared to using the SPT alone (producing) savings in construction cost".

Tice & Knott (2000) "Cape Hatteras Light Station Relocation" - ASCE Outstanding Civil Engineering achievement for 2000, Geo-Strata Oct. "Good agreement was observed between DMT-predicted and measured settlements at the sandy site under Cape Hatteras Light Station".

Woodward, McIntosh (1993) "Case history: Shallow Foundation Settlement Prediction Using the Marchetti Dilatometer", ASCE Annual Florida Sec. Meeting:
"at the investigated sandy site, use of modulus from DMT permitted considerable savings vs using data from SPT. SPT, for this project, underpredicted the modulus".

Geopac (1992) "Comparisons of settlements predicted by PMT and DMT in a silty-sandy soil in Quebec".

Sawada S. and Sugawara N. (1995) "Evaluation of densification of loose sand by SBP and DMT".

Mayne P. (2001) "Settlements predicted by SPT and DMT vs settlement measured of a 13-story Dormitory Building for Georgia State Univ. Atlanta".
"The measured settlement was 9.8 inches. SPT had predicted 1 inch….DMT + theory of elasticity gave essentially the correct answer".