Summary: Data obtained from tests and observations of the extensive piezometer and relief-well systems at Sardis Dam, Mississippi, are analyzed in this report in furtherance of a Corps of Engineers program to study the performance of earth dams and foundations.

Summary: The design of many contemporary aircraft, layout of base facilities, and operational characteristics of planes necessitate movements of these aircraft along prescribed paths. Undesirable effects on pavements have been observed at a number of places under this type of traffic from B-47 planes.

Summary: results of flexural strength, CBR, and plate bearing tests, moisture and density determinations, mechanical analysis, and Atterburg limits tests conducted on the pavements, bases, and subgrades of the various landing facilities at this airfield are used in this report to evaluate the load-carrying capacity of the pavements with respect to various landing-gear assemblies and operational-life categories.

Summary: Enid Dam, a unit in the flood-control plan for the Yazoo River, is a rolled-fill structure about 85 ft high and 8400 ft long, and contains about 5-3/4 million cu yd of fill.

Introduction: Three matters discussed in the main report on the investigation of the suitability of Prepakt concrete for mass and reinforced concrete structures, issued in October 1951, required further study. These matters are (a) the properties of Alfesil, (b) the permeability of Prepakt concrete, and (c) the resistance of Prepakt concrete to natural weathering.

Introduction: The general project of correlating soil properties with geologic information and with simple soil index characteristics, one phase of which is described in this report, consists in comparing soil properties with soil types and with their geologic history and environment in order to determine what correlations are possible.

Series of pile loading tests performed on the Morganza Floodway control structure to determine the most economic way to support the foundation in the compressible underlying soils. The report also provides information about the structure and previous tests.

The purpose of this manual is to describe and explain the use of the "Unified Soil Classification System" in order that identification of soil types will be on a common basis throughout the agencies using this system.

Report describing various kinds of soils and their characteristics, for use in constructing roads and airfields: "The properties desired in soils for foundations under roads and airfields and for base courses under flexible pavements are: adequate strength, good compaction characteristics, adequate drainage, resistance to frost action in areas where frost is a factor, and acceptable compression and expansion characteristics. Certain of these properties, if inadequate in the soils available, may be supplied by proper construction methods" (p. B1).

Report describing various kinds of soils and their characteristics, for use in constructing embankments and foundations: "The major properties of a soil proposed for use in an embankment or foundation that are of concern to the design or construction engineer are its strength, permeability, and consolidation and compaction characteristics. Other features may be investigated for a specific problem, but in general some or all of the properties mentioned above are of primary importance in an earth embankment or foundation project of any magnitude" (p. 1).

"The intent of this report is to provide technical and practical information which will be of value to those responsible for preparation, review or accomplishment of specifications for the establishment of vegetative ground cover. [...] The report is concerned primarily with establishment of turf grasses in the continental United States. A brief discussion of maintenance practices is included as such practices have a direct bearing on the successful establishment of the desired ground cover" (p. 1).

The purpose of the investigation reported herein was to develop data on the suitability of Prepakt concrete for mass concrete dams and for reinforced concrete construction. Prepakt concrete is made by packing the forms with coarse aggregate and then pumping in a cement base intrusion mixture (grout) to fill the voids.

Report on tests of permeability and triaxial of mass concrete as well as tests of permeability, pore pressure, and uplift in gravity dams.

Report of a hydraulic model investigation "to determine the most economical method of providing protection for Cumberland and Ridgeley against floods somewhat greater than the flood of March 1936 Specifically, the model was used to determine: the proper sections and grades of channels required to pass the design flood with maximum reductions in flood stages; the minimum heights of levees and walls; and the channel treatment required at bridges to insure the safe passage of floodwaters with minimum alterations to the structures" (p. 4).

This report provides a review of the design and performance of the embankment and foundation of Blakely Mountain Dam in Arkansas. "This study is one of a series of similar studies of the foundation and soil mechanics features of earth dams [...] In these studies field experience is analyzed and performance of the completed structures is compared with design predictions to provide information for use in the design and construction of future projects" (p. 1).

"The purpose of this report is to present the results of a study of the performance of the three relief well systems [along the Missouri River] during the July 1951 and April 1952 floods, and to compare their performance with design predictions. [...] The report includes observed uplift and well-flow data, descriptions of relief well operations during the floods, and an analysis of the effectiveness of the well systems together with discussion and comments on several experimental and test wells" (p. 2).

This report contains general background information about the John H. Kerr project, which comprises a retaining structure, Buggs Island Dam, and a backwater protection structure, Island Creek Dam. It also provides more detailed information about the design, construction, and prototype observation of each of the dams.

"This report describes studies and analyses made to determine the load-carrying capacities of the pavements at Simmons Army Airfield with respect to various aircraft landing gear assemblies and pavement life categories. The report includes data obtained from design specifications, in-place and laboratory tests performed during construction of the pavements, and in-place and laboratory tests performed for evaluation purposes" (p. 1).

"This report contains a summary of construction of procedures and field observations made during and after construction of Benbrook Dam, a brief review of the original design data, and comparisons of design predictions with performance data" (p. 1). It is part of a series to compare field experience and performance of existing structures with design predictions.

This report provides a summary and analysis of field observations and performance of the Tom Jenkins Dam in Ohio, compared with original design predictions.

"The purpose of this report is to consolidate data gathered by the Corps of Engineers in various geologic investigations, and to augment this material with pertinent information garnered from the extensive investigations and studies [of the Mississippi River deltaic plain and its associated offshore area]" (p. 1). The report focuses primarily on those materials that are most important from an engineering standpoint.

This report reviews the performance of the Lookout Point Dam located on the Middle Fork of the Willamette River in Oregon. "This study is one of a series of similar studies of the foundation and soil mechanics features of earth dams [...] In these studies original design data are reviewed, construction experience is summarized, and performance fo the completed structures is compared with design predictions to provide information for use in the design and construction of future similar projects" (p. 1).

"A technique is described whereby desert areas selected for terrain comparison are mapped in terms of general terrain factors, geometry factors, ground factors, and vegetation" (p. vii).

Report of findings from various tests: "Model investigations of the surges occurring in sewer lines and of the flow conditions in a typical pumping plant, used to dispose of drainage during high river stages, were conducted as a part of the local flood protection project for Louisville, Kentucky. Studies conducted on a 1:32 scale simplified model of the Southern Outfall Sewer provided general information on the relative amount of relief from surges to be expected from the pumping station and manholes in the sewer line upstream" (p. v).