Wayne Alexander Charlie
Engineers at Shr Pne Ct, Fort Collins, CO

License number
Colorado 14665
Issued Date
Feb 23, 1977
Renew Date
Nov 1, 2015
Expiration Date
Oct 31, 2017
Type
Professional Engineer
Address
Address
813 Shore Pine Ct, Fort Collins, CO 80525
LicenseFiles verified this license of Dec 9, 2016 at the Colorado - Department of Regulatory Agencies.

Professional information

Wayne Charlie Photo 1

Method For Determining Liquefaction Potential Of Cohesionless Soils

US Patent:
5109702, May 5, 1992
Filed:
Jun 27, 1990
Appl. No.:
7/549888
Inventors:
Wayne A. Charlie - Fort Collins CO
Leo W. Butler - Green Bay WI
Assignee:
The United States of America as represented by the Secretary of the Air
Force - Washington DC
International Classification:
G01N 300
US Classification:
73 84
Abstract:
A method for determining the liquefaction potential of cohesionless (granular) soils is provided in which a rotational shear vane assembly having a plurality of radially disposed blades (herein a Piezovane) is mounted to a shaft having a porewater pressure transducer mounted to such assembly and communicating to an outer edge of at least one the blades, with a torque transducer mounted to such shaft and a potentiometer connected to an upper portion of the shaft to measure rotational displacement of such blades. The vane assembly blades are inserted into undisturbed soil and rotated one or more turns to obtain porewater pressure response measurements from the soil shear surface defined by the blade ends along with torque and rotational displacement measurements. A porewater pressure increase indicates a contractive soil which has the potential to liquefy (and cause landslides) while a porewater pressure decrease indicates a dilating soil which does not readily liquefy and is suitable for building thereon.

Engineers licenses in Colorado