MSMA seminar Phone 6012 710 2620

http://ift.tt/1IOhskY Tel Call 6012-7102620 Manual Saliran Mesra Alam (referred to as MSMA), or the Urban Stormwater Management Manual for Malaysia is the stormwater drainage design standard first released by the Department of Irrigation and Drainage Malaysia (D.I.D) in 2000. It is compulsory for all engineers in Malaysia to design drainage works to fullfil the requirements of MSMA. The Department of Irrigation and Drainage has completely revised 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. With reference to the case studies done for Kuala Lumpur, there are a lot of alterations in the second edition including the following: For Kuala Lumpur it was found that the design storm has gone up by up to 126% for ten out of the fourteen rainfall stations. The design discharge using the Rational Method has gone up by up to 129% for commercial and city area. For a factory site in Kuala Lumpur the Site Storage Requirement for OSD has gone up by up to 235%. Detention basin has gone up by up to 129% in the storage. The hike in the magnitudes of the main design parameters as outlined above can be due to the differences between the first and the second editions of MSMA as follows: Longer rainfall data covering 100 more stations in Peninsular Malaysia. The rainfall intensities for most ARI's are higher. West Malaysia is now grouped into 5 regions for the determination of the storm temporal pattern, compared to previously where it was divided into east and west coast of the Peninsula. The dissimilar hydrograph peaks and shapes caused by the differences in temporal patterns. The coefficient of runoff in the Rational Method is now fixed according to the types of landuse, and not dependent on storm durations and intensities, and whether a catchment is urban/rural in condition. Differences in the estimated peak discharge is observed . The Time-Area Method in MSMA2 is affected by the differences in the storm intensites, temporal patterns and the loss model used. The storm intensities for Kuala Lumpur have increased and the storm temporal pattern is more peaky, giving rise to a more peaky discharge hydrograph. The Site Storage Requirement (SSR) based on the Approximate Swinburne Method in MSMA2 is higher than that using the Swinburne Method in the first edition. The second editon used the approximate method based on a set of approximation tables and this has resulted in an over estimation of the Site Storage Requirements. The storage of a detention basin has gone up using MSMA2 compared to the first edition because of the increase in the storm intensities, temporal patterns and the choice 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 accurately and to allow comparison be made of their differences speedily. A stormwater design software is developed for MSMA. The software is written by Ir. Dr. Quek Keng Hong- a professonal engineer in Malaysia. MSMAware also covers the East Malaysian state of Sarawak where more than a dozen storm stations and their temporal patterns are included into the software. MSMA SEMINAR : 00:00:05 MSMA seminar 00:00:06 MSMA courses 00:00:07 culvert design software 00:00:08 culvert analysis program 00:00:09 On-Site Detention Software MSMA seminar Phone 6012 710 2620
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