Summary: "Prototype tests of an acoustic flowmeter system were made in a 24-ftdiam power penstock at Oahe Dam to evaluate the system prior to permanent installation in the outlet works at Summersville Dam. Comparative discharge measurements included acoustic, penstock pressure-momentum (Gibson), turbine model test ratings, scroll-case pressure differential (Winter-Kennedy flowmeter), and surge tank volume changes. The acoustic flowmeter measurements were very consistent and many of the comparisons were within 1%. The location of the measuring section for a single-path acoustic flowmeter must be selected to give a known or measurable relation between the flow pattern of the whole section and that along the acoustic path" (p. xi).

First part of an appendix that accompanies a study meant to develop a model for predicting the cross-country performance of military vehicles in various conditions. This volume describes a segment of tests to determine the ability of vehicles to negotiate lateral obstacles (e.g., trees, boulders, holes, mounds, etc.).

"The primary objective of this study was to obtain information on the environmental characteristics of rice fields in the United States and the effect of these characteristics on ground mobility for comparison with similar characteristics of rice fields in Southeast Asia as data from the latter become available" (p. vii).

This report is the first in a series and provides the methods and data obtained from field tests to compare soil types to evaluate highly-compacted soils in foundations that are subjected to dynamic loads. "The specific purpose was to determine the effect of load contact area and static contact pressure on the elastic properties of foundations as determined by means of a small-scale vibratory tests" (p. vii).

Summary: "This report maps the distribution of soils which border the Mississippi between river mile 189 and Head of Passes in southeast Louisiana with special regard to their engineering significance. The subsurface disposition of depositional environments and their associated soil types are shown on 34 subsurface profiles. The text describes the physiographic and geologic development of the area studied, summarizes physical and engineering characteristics of the engineering soil types mapped, and discusses some of the effects of geologic factors on river migration" (p. vii).

Summary: "This appendix presents the procedures for digital implementation of the segmented tire model, developed in the basic report for an analog computer. Two procedures are required: (a) determination of the segment spring coefficient from measured load-deflection test results, and (b) computation of the resultant force vector transmitted to the axle. Digital programs for both procedures were written in Fortran IV for a GE-420 system, and are included" (p. xi).

This report provides information about slope stability problems which will arise if a new canal is excavated through the types of weak shale encountered along the present Panama Canal. It includes a discussion about the general problem and possible approaches, a review of previous experience, and a description of the new study.

"This appendix discusses the methods used to classify soils for the preliminary Thailand study and presents pedological soil profile descriptions" (p. B1).

"This report summarizes the preliminary results of a current U. S. Army Engineer Waterways Experiment Station (WES) study of the feasibility of using bamboo as an expedient reinforcement for temporary, reinforced concrete structures. The report contains an extensive review of the literature, a description of the test procedures, results of an investigation of the most important engineering properties of bamboo, descriptions of tests of 26 bamboo-reinforced structural elements (20 simply supported beams with 6-ft (1.83-m) spans, and 6 simply supported two-way slabs of varying length, width, and depth), and conclusions and tentative recommendations for the design of bamboo-reinforced structures" (p. xiii).

A report on the construction of underground cavities.

A report on the cost and constructibility of the construction of underground cavities.

Report providing the results of a hydraulic model investigation of the Cannelton Lock proposed for construction on the Ohio River. It includes detailed information about the tests and suggested dimensions and features of the final lock.

Results of hydraulic model investigations to study the proposed filling an demptying system for the Cordell Hull Luck on the Cumberland River and Tennessee. It also included tests of a multiport system and provided suggestions for improvement in the design.

Report on investigations into the construction of a lock in the Arkansas River including results of model tests and recommendations.

Results of a hydraulic model investigation based on locks in the Arkansas River before the construction of additional locks. "Model studies of the filling and emptying system proposed for use at the low-lift locks in the Arkansas project were conducted to confirm the adequacy of the original design hydraulic system, and to develop, if needed, improvements in the system" (p. 2).

Report providing results of hydrualic model investigations to test a new type of lock filling and emptying system to determine the final suggested construction for the Millers Ferry Lock in the Alabama River.

This report is an airphoto analysis of soil types including maps and illustrations.

This report is concerned with that part of the Texas Water Project located in the Cypress Creek and Sulphur River Basins and within the New Orleans District (NOD) of the U. S. Army Corps of Engineers. The geological reconnaissance reported herein was performed for the NOD to provide a basis for estimating costs and determining the feasibility of construction of 5 dams and reservoirs, 1 tunnel, 15 pump stations, and about 110 miles of transmission channel and the enlargement of 2 existing reservoirs.

Summary: "This report provides data on the alluvial aquifer of the Lower Mississippi Valley in the area between Cape Girardeau, Missouri, and Port Gibson, Mississippi. Maps are presented of the Tertiary surface on which the alluvial aquifer rests as well as the geology of this surface and the areas where hydrologic recharge to the alluvial aquifer may occur. A set of piezometric-surface maps, together with hydrographs of observation wells, river stages, precipitation rates, and data on the hydrologic properties of the alluvium, makes it possible to calculate changes which take place in the aquifer. Further data are presented on the chemical quality of groundwater. The relevance of these data to engineering problems is discussed" (p. ix).

Report describing the results of experiments to test samples of rubber, synthetic rubber, and polyvinylchloride (PVC) to determine their suitability for use in nonmetallic waterstops. During the tests, each of the samples was exposed to various conditions and environments before evaluation.

Partial summary: "To assess the durability of concrete and other materials used in concrete construction when exposed to natural weathering, the Corps of Engineers maintains severe-, mild-, moderate-, and non-weathering exposure stations at various locations in the United States. Specimens from actual structures and experimental specimens in which the amounts or kinds of components are varied are exposed until they fail or until testing is completed, whichever occurs first. The specimens are inspected periodically, and tested to determine their dynamic modulus of elasticity and pulse velocity. [...] Volume 1 contains the active evaluations" (p. ix).

This volume describes the final results from completed investigational programs intended to test the performance of various concrete materials exposed to weathering.

Report discussing the results of a series of tests in Galveston Bay to: "(a) develop plans for relocation and stabilization of the jetty channel on an alignment and at a depth suitable fro the safe passage of supertankers; (b) determine means for protecting the north jetty from the undermining action of tidal currents; (c) determine the shoaling characteristics of the relocated and deepened jetty (inner bar) channel and develop plans for minimizing shoaling in the relocated channel; and (d) determine the best locations for additional anchorage areas adjacent to the jetty channel or in Bolivar Roads" (p. ix).

Partial summary: "Soil moisture, soil strength, and other relevant data were collected in Thailand during two wet seasons and one dry season for use in the development of methods to predict soil trafficability for off-road ground contact vehicles in Southeast Asia. Data were collected at 75 test sites distributed in eight geographic areas which had differences in soils, weather regimes, terrain, and land use" (p. xi).