Author: Publisher:
ISBN:
Category : Concrete
Languages : en
Pages : 22
Book Description
Laboratory Filter Tests on Concrete Sand and Gravel
Author: Experimental Laboratory Filter Tests for Underdrains at Station 7371+00, Friant-Kern Canal, Central Valley Project, California
Author: K. P. KarpoffLaboratory Tests on Sub Base Soils and Filter Materials for Under Drainage of Concrete Lining, Station 710 to 1848 Friant
Author: W. G. HoltzLaboratory Studies of Proposed Filter Materials, Sanford Dam, Canadian River Project, Texas
Author: R. D. RichmondBulletin
Author: National Sand and Gravel AssociationPublisher:
ISBN:
Category : Gravel
Languages : en
Pages : 134
Book Description
Filter Experiments and Design Criteria
Author: W. C. ShermanPublisher:
ISBN:
Category :
Languages : en
Pages : 57
Book Description
Laboratory tests were performed to determine the effectiveness of standard concrete sands and gravels as filter materials for a varied range of base materials. In addition, various mixtures of sand and gravel were investigated for inherent stability and permeability characteristics with regard to their use as filter materials.
Irrigation Operator's Workshop 1967
Author: Evaluation of Underdrainage Techniques for the Densification of Fine-grained Dredged Material
Author: David P. HammerPublisher:
ISBN:
Category : Drainage
Languages : en
Pages : 112
Book Description
Sand, Gravel and Other Aggregates
Author: James Watson (D. Sc.)Publisher:
ISBN:
Category : Building materials
Languages : en
Pages : 56
Book Description
Laboratory Tests on Granular Filters for Embankment Dams
Author: Edward B. PerryPublisher:
ISBN:
Category : Dams
Languages : en
Pages : 382
Book Description
Present Corps of Engineer (CE) filter criterion (EM 1110-2-1901, Appendix D) dates from the early 1950's, and some uncertainty exists as to the applicability and adequacy of this criterion under various conditions. Laboratory filter tests were conducted on uniform and poorly-graded cohesionless base materials protected by various filters, and internal stability tests were conducted on various graded filter materials. Based upon the limited tests conducted, the following changes to CE filter criterion are proposed. For a uniform (poorly-graded cohesionless base material, the second stability ratio should not be used, and there is no need for requiring parallelism of filter and base gradations should be retained. For a poorly-graded cohesionless base material, the second stability ratio should not be used, but the requirement for parallelism of filter and base, gradations should be retained. Poorly-graded gravelly sand and sandy gravel are internally unstable and should not be used as filters when the coefficient of uniformity> or = 20.