MSMA2 Ph Call 6012)-7102620

http://ift.tt/1MSLe3T Telephone call 6012-7102620 Manual Saliran Mesra Alam Malaysia (or MSMA), or in English the Urban Stormwater Management Manual for Malaysia is the urban drainage design standard first published by the Department of Irrigation and Drainage Malaysia (D.I.D) in 2000. Compliance with the requirements of MSMA when designing drainage system is required legally of all engineers in Malaysia. The Department of Irrigation and Drainage has completely referred to as the first edition of MSMA (also known as MSMA1) with the release of the second edition (known as MSMA2) about 11 years after its first edition. There are a lot of differences in the second edition include (taken from case studies done for Kuala Lumpur): 10 out of the 14 rainfall stations in Kuala Lumpur have its design rainfall gone up by up to 125%. The design flow using the Rational Method has gone up by up to 130% for commercial and city area. For a factory lot in Kuala Lumpur the Site Storage Requirement for On-Site Detention has gone up by up to 233%. The storage of a detention pond has gone up by up to 130%. The differences between the first and the second editions of MSMA give rise to the hike in the magnitudes of the main design parameters as follows: Longer storm data covering 100 more storm stations in Peninsular Malaysia. The rainfall intensities for most ARI's have increased. Compared to the first edition where it was divided into east and west coast of the Peninsula for the computation of the temporal pattern, West Malaysia is now divided into 5 regions. The dissimilar hydrograph peaks and shapes caused by the differences in temporal patterns. Not affected by rainfall durations and intensities, and whether a catchment is urban/rural in condition, the coefficient of runoff in the Rational Method is now set according to the types of landuse. This gives rise to differences in the estimated peak flow. The differences in the rainfall intensites, temporal patterns and the loss model used all affected the Time-Area Method in the second editon. For Kuala Lumpur it is noticed that the rainfall intensities have increased and the temporal pattern is more peaky, thus giving rise to a more peaky flow hydrograph. The Approximate Swinburne Method in the second editon gives higher Site Storage Requirement (SSR) than the Swinburne Method in the first edition. MSMA2 used the approximate method based on a set of approximation tables and this has resulted in an over estimation of the SSR's. The storage of a detention pond has gone up using the second editon compared to the first edition because of the rise in the rainfall intensities, temporal patterns and the selection of loss rate. In view of the many differences in computational methods between the first and second editions of MSMA, a tool is developed to help engineers to perform the computations using both editions precisely and to allow comparison be made of their differences quickly. The tool is a drainage design software developed for MSMA. The software is written by Ir. Dr. Quek Keng Hong- a practising engineer in Malaysia. MSMAware also includes more than a dozen rainfall stations and their temporal patterns in the East Malaysian state of Sarawak. MSMA2 : 00:00:05 MSMA2 00:00:05 MSMA software 00:00:06 MSMA workshop 00:00:07 MSMA training 00:00:08 MSMA seminar https://www.youtube.com/watch?v=61AgP_ky_9E MSMA2 Ph Call (6012)-7102620
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