03344nas a2200433 4500 20260817163539.0 011298s1986 th r 000| 0eng d .b10098811 AIT Thesis no.EV-86-11 Mamoon, Abdullah Al Assessment of effectivity of design models for sewerage and drainage systems Bangkok : Asian Institute of Technology, 1986 78 p. Thesis ; no. EV-86-11 A research study submitted in partial fulfillment of the requirements for the degree of Master of Engineering, School of Environment, Resources and Development Thesis (M.Eng.) - Asian Institute of Technology, 1986 The efficiency of computer based modelling is assessed by testing the Dynamic programming model developed at AIT by SROIKEEREE (1985) on microcomputers. considering elevation. pipe diameter and time of flow as state variables. The model is applied to some large and small real networks simulating actual field conditions. Capital cost savings of 2.10 - 7.7 % were found by using model design rather than convetiona1 design. Inclusion of time of flow as a state variable reduced cost to about 1 % more than compared to those from models considering only elevation and diameter. Behavior of the model seems to be dependent mostly on topographic conditions. Introducing the diameter into the state variables reduced least-cost by about 17 % in an artificial network. The model is capable of designing storm. sanitary and combined systems effectively and its operation does not require much skill. One important feature of this model is the use of microcomputers which could be readily available specially in developing countries and can be easily installed in design offices engaged in sewer system design. Besides this. the model also showed sensitivity to maximum and minimum velocity. sewer cover and cost functions etc. Results obtained from this study demonstrate the great likelihood of the acceptance of model based design by sewerage and drainage engineers instead of conventional design. Dynamic programming Drainage Orth, H.M., Chairperson I, Fude, Examination Committee Hanaki, K., Examination Committee The Royal Netherlands Government, Scholarship Donor Asian Institute of Technology. Thesis ; no. EV-86-11 Full-Text http://203.159.5.9/ait-thesis/detail.php?q=B19636 .b10098811 mnait x 240411 2 951012 m a x 0 mnait mnait mnarc 22 40 20 Barcode : 30050120804215 CREATED : 2014-03-28 RECORD # : i12782245 LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 Barcode : 30050120224075 CREATED : 2016-09-05 RECORD # : i12972927 LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 Barcode : 30050121074156 CREATED : 2023-04-04 RECORD # : i13442065 LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 9073 9073 0 0 0 0 MAIN MAIN mnait 2026-08-17 50.00 0 AIT Thesis no.EV-86-11 30050120804215 2026-08-17 16:35:39 3 2026-08-17 22 0 0 0 0 MAIN MAIN mnarc 2026-08-17 0 AIT Thesis no.EV-86-11 30050120224075 2026-08-17 16:35:39 2026-08-17 40 0 0 0 0 MAIN MAIN mnait 2026-08-17 50.00 0 AIT Thesis no.EV-86-11 30050121074156 2026-08-17 16:35:39 1 2026-08-17 20