Photographic Study of Water Column Separation
The phenomenon of water column separation during hydraulic transient conditions in pipelines having small pressures at normal running conditions has been reported by a number of authors....

A Model to Predict Mean Annual Watershed Discharge
A method was developed for the estimation of long term discharge characteristics of small watersheds. It was shown that, besides the annual precipitation and the annual mean temperature,...

Water Features on Topographic Maps
Topographic maps are a prime source of information for planning the improvement of man's environment with respect to water. In order to utilize the tremendous amount of hydrologic...

Photogrammetry Aids Solution of Environment Problems
Photogrammetrists are engaged in the recognition, location, and description of environmental problems and the surveillance of completed environmental projects. Various types of aerial...

Applications of Extraterrestrial Surveying and Mapping
Extraterrestrial surveying and mapping is part of the profession of civil engineering. The ASCE Committee on Extraterrestrial Surveying and Mapping is preparing articles and bibliographies,...

Regional Control Supplied by Photogrammetry
Where second-order geodetic control has a spacing of 3 miles to 5 miles, the positions and elevations of a virtually unlimited number of premarked ground points within a control figure...

Channel Rectification Engineering Survey Program
Accurate surveys and adequate maps are essential for planning, design, and construction of channel rectification and other works for a major river project; to insure the complete project...

Aerial Color Analysis of Water Quality
A new technique utilizing color photography in aerial water analysis is described. The technique termed the scene color standard (SCS) technique, uses natural objects in the photographic...

Absolute Orientation of Photogrammetric Model
An iterative approach by linearized equations is employed to tackle the problem of absolute orientation. As the space model is similar to the photographed object, the scale determination...

Explicit Approach to Exterior Orientation
Until recently, exterior orientation methods, which have made their debut in photogrammetric literature, have been developed by treating the problem as a nonlinear one. Therefore, iterative...

Aerial Photography for Water Resources Studies
The fundamentals of color and color-infrared photography are reviewed. Illustrations are presented to show the use of color and color-infrared aerial photography to study siltation and...

Bridge Engineer Looks at Esthetics of Structures
It should be mandatory that bridge engineers consider esthetics since there is so much emphasis being placed upon the effect of construction on the environment. Factors to be considered...

Remote Photographic Acqisition of Data
Meteorological instruments are often remotely located where frequent visits by technicians to obtain readings are impractical. In such cases, an economical device to record data automatically...

Apollo 11: Soil Mechanics Results
Data were extracted from astronaut observations, television coverage of the moon walk, and returned photographs and samples. It has been determined that the upper few centimeters of the...

Coastal Erosion in North Carolina
Aerial photography and wave refraction procedures were used to study coastal erosion along the entire 330 miles of the North Carolina coast. The aerial photography method made use of...

Modern Day Surveys for Highway Location and Design
Spin-offs of space technology and defense oriented research projects present the highway engineer with adequate means of surveying to demand requirements. Descriptions are presented for...

Applications of Airborne Remote Sensing Technology
Aerial photography has been used for nearly a century. Recent developments in aerial photography, such as color film, color infrared film, and multiband photographic systems, have greatly...

Reconnaissance for Dam Sites in Remote Areas
River reconnaissance studies generally separate into three stages: literature search, interviews with knowledgeable people, and field investigations. The reconnaissance engineer should...

Optimization of Sub-Systems with Timelapse Photography

Economic Location of Locks
Engineers and economic planners must locate navigation locks on new waterway improvements or when relocating locks on existing waterways in such a manner as to decrease operating costs...

 

 

 

 

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