Technical specification of NetSystem 4

Product	NetSystem 4
Type of article	PRODUCT INFORMATION
Source for translation	NS4.7

System-hardware requirements

• operating system MS Windows 8, Windows 7, Vista, XP
• 2 GHz dual core processor
• 2 GB RAM for Win XP or 3 GB RAM for Win8, Win7 or Vista
• minimum screen resolution 1280x1024
• Microsoft.NET Framework 4 is required
• Internet access for activation and updating of the software and directories is recommended
• installation and later usage with the same user righs is recommended

List of standards and methods used for sizing and calculations

Net-san

Gravity sewerage

1. Stream of stormwater (Qd):
   • PN EN 752-4 Standard
   • Karl and Klauss R. Imhoff: Urban Drainage and Wastewater Disposal.
2. Hydraulic calculations of partly filled pipes (Qs, Qd):
   • flow calculation due to Bretting’s formula.
   • pressure drop calculation due to Prandtl-Colebrook formula.
3. Self-defecation:
   • due to the method of boundary shear stress.
4. Pipe diameter sizing:
   • considering sum of streams (Qs and Qd) and fill ratio.
5. Network arrangement:
   • authorized method which meets required minimum and maximum depth gradient and collisions with other networks.
6. Local friction:
   • considering roughness of pipes taken from catalogue data or from ATV-DVWK A110P standard.

Pressure sewerage

1. Pumping stations:
   • based on: Karl and Klauss R. Imhoff: Urban Drainage and Wastewater Disposal and authorised method.
2. Hydraulic calculations of completely filled pipes:
   • due to Colebrooke-White’s formula, Qs and Qd values are directly added up.
3. Pipe diameter sizing:
   • considering the maximum speed (Vmax) and the maximum unconsolidated frictional resistance (Rmax) values.
4. Network arrangement:
   • authorized algorithm considering the boundary conditions (min/max cover and declines), and collisions.
5. Local friction:
   • not considered.

Water pipeline

1. Calculations of pipes completely filled:
   • due to Colebrooke-White’s formula.
2. Pipe diameter sizing:
   • considering the maximum speed (Vmax) and the maximum unconsolidated frictional resistance (Rmax) values.
3. Network arrangement:
   • authorized algorithm considering the boundary conditions (min/max cover and declines), and collisions.
4. Local friction:
   • enabled by the ability of declaring dzeta value for water pipe network junction.