POINTS OF CONTACT - doeri50013

ERDC TN-DOER-I5

August 2000

The physical dredging environment should be defined before any dredging occurs. The properties

of the sediments and water within the project area must be defined to insure accurate production

calculations. Initially, core samples of the sediments should be taken to the maximum dredging

depth to identify the sediment type, mineral density, and in situ sediment density. Water properties

such as the dissolved and suspended solids content should also be sampled periodically. The data

from the coring and water sampling is then used to update the variables in the production equations.

For continuous maintenance dredging, these properties should be periodically updated to insure

consistency and accuracy in the production data.

POINTS OF CONTACT: For additional information on this topic, contact the author, Dr. Steve

Scott (601 634-2371, scotts@wes.army.mil), the DOER Instrumentation Focus Area Manager,

Mr. James Rosati (601 624-2022, rosatij@wes.army.mil), or the Program Manager of the Dredging

Operations and Environmental Research Program, Dr. Robert M. Engler (601-634-3634,

englerr@wes.army.mil). This technical note should be cited as follows:

Scott, S. (2000). "Uncertainty Analysis Applied to Dredge Production Calculation,"

DOER Technical Notes Collection (ERDC TN-DOER-I5), U.S. Army Engineer Research

and Development Center, Vicksburg, MS. www.wes.army.mil/el/dots/doer

REFERENCES

Coleman, H. W., and Steele, W. G. (1989). Experimentation and uncertainty analysis for engineers. Wiley.

Peck, R. B., and Hanson, W. E. (1967). Foundation engineering. Wiley.

Rokosch, W. D. (1989). "Measuring dry matter in trailing hopper dredges." Proceedings from the World Dredging

Conference XII.

Scott, S. H. (1993). "Uncertainty analysis of dredge production measurement and calculation," Journal of Waterway,

Port, Coastal, and Ocean Engineering 119(2).

NOTE: The contents of this technical note are not to be used for advertising, publication,

or promotional purposes. Citation of trade names does not constitute an official endorse-

ment or approval of the use of such products.