COMPOSITE RISK MODELS OF OGEE TYPE SPILLWAY
COMPOSITE RISK MODELS OF OGEE TYPE SPILLWAY
| dc.contributor.author | IMAN, YUSSUFF MUMMUNNI | |
| dc.date.accessioned | 2014-11-28T11:00:05Z | |
| dc.date.available | 2014-11-28T11:00:05Z | |
| dc.date.issued | 1990-01 | |
| dc.description | A Thesis Submitted to the Postgraduate School, Ahmadu Bello University In Partial Fulfillment of the Requirements for the Award of the Degree of Master of Science in Water Resources and Environmental Engineering Department of Water Resources and Environmental Engineering, Ahmadu Bello University, Zaria, Nigeria. | en_US |
| dc.description.abstract | In the existing design methods, consideration is given only on the stochastic process of flood flows imposed on the structure to account for hydrologic risk and the capacity of the structure is treated as deterministic. This thesis presents composite risk models which integrated hydrologic and hydraulic risks in the design of spillway structure. Both static and dynamic risk models were developed and applied to Ogee Type Spillway. While the static model concentrates on the occurrence of single (worse) flood magnitude, the dynamic model takes into account the repeated nature of the random flood magnitude imposed on the structure. Results show that risk evaluated by the conventional method which only considers hydrologic risk underestimates the risk of failure and this becomes significant when return period and safety factors are large. Risk, safety factor, service life, and return period relationships were established and these can be incorporated into optimisation model for determining minimum cost spillway systems. | en_US |
| dc.identifier.uri | http://hdl.handle.net/123456789/5724 | |
| dc.language.iso | en | en_US |
| dc.subject | COMPOSITE R, | en_US |
| dc.subject | RISK, | en_US |
| dc.subject | MODELS, | en_US |
| dc.subject | OGEE, | en_US |
| dc.subject | SPILLWAY. | en_US |
| dc.title | COMPOSITE RISK MODELS OF OGEE TYPE SPILLWAY | en_US |
| dc.type | Thesis | en_US |