603 - 5885 1250 (4 lines) info@mes100.com

 

  1. Project file MiTS 1(PondCAD) here
  2. Project file MiTS 2 here
  3. Software Report here
  4. Manual Excel Spreadsheet here
  5. Linear interpolator here

*kindly informed that you will need to download the manual excel spreadsheet and software report

Objective

  1. Comparison between software calculation and manual calculation. To ensure that the results are the same
  2. Software extract the correct value from Table in MSMA 2

Project Development details

Area: 1 ha (0.75 ha for impervious, 0.25 ha for pervious)

Terrain condition : Lowlying

MSMA 2nd Edition

 

OSD Sizing Procedure (MSMA 2 – Simplified Method)

Manual Excel Spreadsheet MiTS Software

Design Criteria

Design Manual: MSMA 2

Method: Simplified Method

Type of OSD = Below Ground

Proposed Development

Location: Kuala Lumpur

Region: Region 1 – West Coast

Impervious = 0.8 ha ; Pervious = 0.2 ha

Terrain = Lowlying

3. Permissible Site Discharge (PSD) & Site Storage Requirement (SSR)

Table 5.A1

Interpolate;

PSD = 65.3 l/s/ha

SSR = 499 m3s

Table 5.A1

Table 5.A1

Table 5.A2

Interpolate:

PSD : 62.1 l/s/ha

SSR : 487.23 m3s

Inlet : 196.67 l/s/ha

Table 5.A2

Table 5.A2 

4. OSD Tank Sizing

 

 

5. Inlet & Outlet Sizing

Table 5.A3

Table 5.A3;

Interpolate

Volume (m3) : 500 m3

Inlet & Overflow Dia. (mm): 510 mm

Outlet Dia. (mm) : 195 mm

Table 5.A4;

Interpolate

i) Determine the Overflow Pipe Diameter using Inlet Flow obtained from Table 5.A2 as discharge : 0.1967    m3/s

Pipe diameter = 448 mm

ii) Determine the Outlet Pipe Diameter using PSD value obtained from Table 5.A2 as discharge 0.0621

Pipe diameter = 294 mm

Table 5.A3

 

 

 

 

 

 

 

 

 

 

Table 5.A3

Table 5.A4