| Author | Wiroj Sangvaree |
| Call Number | AIT Thesis no. 79 |
| Subject(s) | Bed load--Measurement
|
| Note | A thesis submitted in partial fulfillment if the requirements for the degree of Master of Engineering in the SEATO Graduate School of Engineering, Bangkok, Thailand. |
| Publisher | Asian Institute of Technology |
| Abstract | A laboratory study was made to determine the effect of the measure of gradation (d) of the bed materials to the flow resis¬ tant factors (n, C, f, k) in the alluvial channel. Investigations were also made to determine the representative roughness height "k” of the gravel. Two kinds of gravel, namely a uniform and a graded gravel, were chosen for this study. Both have the same median diameter of 0.0510 ft (15-55 1™) but differ considerably in the measure of gradation. The measure of gradations of the uniform gravel and the graded gravel were 1.047 and I.967 respectively. Twelve experimental runs for the graded gravel and thirteen runs for the uniform gravel were performed in a 40-foot long, 1-foot wide tilting flume. The flume slope was kept constant throughout the study but the discharge was varied between 0.31 to 1.J5 cfs corresponding to the change in depth of 0.291 to 0.682 ft. The results of this investigation indicates that the measure of gradation does have an effect on the flow resistance factors. The resistance to flow of the graded gravel is greater than that of the uniform gravel. The average apparent roughness heights for both gravels are shown to be greater than D50 and Dr65 |
| Year | 1964 |
| Type | Thesis |
| School | Student Research Before 1979 |
| Department | Other Field of Studies (No Department) |
| Academic Program/FoS | Thesis (Year <=1979) |
| Chairperson(s) | Dr. Niwat Daranandana; |
| Examination Committee(s) | Dr. Norbert L. Ackermann;Dr. John A. Roberson;Dean Milton E. Bender Jr. |
| Degree | Thesis (M.Eng.) - SEATO Graduate School of Engineering |