THE APPLICATION OF DESKTOP COMPUTER PROGRAM TO THE DESIGN OF STORM SEWER SYSTEMS FOR URBAN RESIDENTIAL LAYOUTS

A. A. Adegbola; B. S. Raji

A. A. Adegbola Ladoke Akintola University of Technology, Ogbomoso, Oyo State, Nigeria
B. S. Raji Ladoke Akintola University of Technology, Ogbomoso, Oyo State, Nigeria

Keywords: storm sewer systems, preliminary designs, conventional analysis, basic equations

Abstract

The application of desktop computer to the design of storm sewer systems for urban residential layouts was investigated and outlined. The preliminary design was at full flow conditions, and manning’s formula was used for routing storm runoff through the system. The hydraulic analysis was based on the standard step-back water computational technique, which applied bernoulli’s energy equation to estimate frictional losses in the system. He determination of the appropriate pipe sizes was by trial and error procedure, which ran for several man-hours, for a multi-branch system. A desktop computer program was developed for the calculation of the pipe discharges and rainfall intensities for a selected portion of mokola residential area, Ibadan from the basic equations. The program proceeded to determine suitable pipe inlets and outlets. The computer outputs were compared with the results obtained using the conventional charts and tables in analyzing the selected area. The results produced using the Q-Basic program were more accurate, and were obtained in a few seconds.

Author Biographies

A. A. Adegbola, Ladoke Akintola University of Technology, Ogbomoso, Oyo State, Nigeria

Department of Civil Engineering

B. S. Raji, Ladoke Akintola University of Technology, Ogbomoso, Oyo State, Nigeria

Department of Civil Engineering