Urban Stormwater Management Manual software Call 6012)710 2620

http://ift.tt/1PFJNLZ Ph Call 6012 710-2620 Manual Saliran Mesra Alam (referred to as MSMA), or in English the Urban Stormwater Management Manual for Malaysia is the stormwater drainage design procedure first published by the Department of Irrigation and Drainage Malaysia (D.I.D) in 2000. Compliance with the requirements of MSMA when building drainage system is required legally of all engineers in Malaysia. 11 years after its first publication, DID has completely revised the first edition of MSMA (or MSMA1) with the release of the second edition (or MSMA2). There are a lot of differences in the second edition including (taken from case studies completed for Kuala Lumpur): The design storm has risen by up to 126% for 10 out of the fourteen storm stations in Kuala Lumpur. For commercial and city area, the design discharge using the Rational Method has risen by up to 130%. For a factory site in Kuala Lumpur the Site Storage Requirement for On-Site Detention has risen by up to 234%. The storage volume of a detention pond has risen by up to 130%. The hike in the magnitudes of the main design parameters as described 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 storm intensities for most Average Recurrence Intervals have increased. Peninsular Malaysia is now divided into 5 regions for the derivation of the rainfall temporal pattern, compared to the first edition where it was divided into east and west coast of the Peninsula. The differences in temporal patterns give rise to dissimilar hydrograph peaks and shapes. Not dependent on storm durations and intensities, and whether a catchment is urban/rural in condition, the coefficient of runoff in the Rational Method is now determined according to the types of landuse. This resulted in differences in the estimated peak discharge. The Time-Area Method in the second editon is affected by the differences in the storm intensites, temporal patterns and the loss model used. For Kuala Lumpur it is noted that the storm intensities have increased and the rainfall temporal pattern is more peaky, thus giving rise to a more peaky discharge hydrograph. The Approximate Swinburne Method in the second editon gives higher Site Storage Requirement (SSR) than the Swinburne Method in the first edition. The approximate method in the second editon has given rise to an over estimation of the Site Storage Requirements. Compared to the first edition, the increase in the storm intensities, temporal patterns and the choice of loss rate have caused a rise in the storage volume of a detention pond using the second edition. In view of the many differences in computational procedures between the first and second editions of MSMA, a tool is developed to help engineers to carry out the computations using both editions accurately and to allow comparison be made of their differences quickly. A drainage design software has been designed for MSMA. Ir. Dr. Quek Keng Hong- a practising engineer in Malaysia is the programmer of the software. 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. URBAN STORMWATER MANAGEMENT MANUAL SOFTWARE : 00:00:05 Urban Stormwater Management Manual software 00:00:06 Urban Stormwater Management Manual training 00:00:07 Department of Irrigation and Drainage Malaysia 00:00:09 MSMA2 00:00:10 MSMA software Urban Stormwater Management Manual software Call (6012)710 2620
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