SEWER Foul water network analysis and design module, which combines interactive drawing functions with powerful design functions.

What is Sewer?

Sewer is a foul water network analysis and design module, which combines interactive drawing functions with powerful design functions.

Why Choose Sewer?

DATABASE FILE FORMAT

The DBase file format allows rapid data access — find an entry in less than 0.25 seconds in a dataset of 20,000 records — and an un-limited model size. It also ensures compatibility with most geographic information systems and other programs.

GRAPHICAL FUNCTIONS

The graphical functions allow you to easily insert nodes and links, make changes to an existing layout by moving a node, change the flow direction or query a node or link with a click of the mouse. You can transfer the data between Sewer and our MAP module at any time.

BITMAPS AND CADASTRAL BACKDROPS

View the network with a bitmap or cadastral backdrop. Or display the site contours and slope shading to decide on optimum network layout.

MANHOLES AND CULVERTS

Manholes and culverts are displayed in WYSIWYG mode with user-defined line styles, colours and annotations such as manhole name, inlet level, depth, link type, link size, flow, velocity and capacity.

Combine new and existing culverts, consisting of multiple types and sizes, in one model. You can easily simulate the complex system of flows and overflows that are often found in modern towns and cities.

ERF CONNECTIONS DATA

The Sewer module now includes erf-connection functionality. Users can now graphically insert erf connections using the familiar Sewer user interface while the program automatically indicates the lowest point on each erf. The Erf connection database can then be analyzed to report results and warn the user where erf-connections are unable to drain to the main line.

HYDRAULIC AND GEOMETRIC RELATIONSHIPS, ATTENUATION CALCULATIONS

The design will take into account the hydraulic and geometric relationship between the different branches in the network. Attenuation is calculated at every manhole resulting in a solution, which is 30% to 100% more cost-effective than simply adding the inflow peaks together.

DYNAMIC TIME SIMULATION

The dynamic time simulation (unit inflow hydrographs) allows you to view the flow hydrographs of single or multiple culverts in order to gain an insight into the dynamics of the system.

The flexible pumps option allows you to simulate pump stations with up to 4 pumps.

DISPLAY ACCORDING TO CRITERIA

Once you have completed the analysis the network can be displayed according to specific criteria such as flow or calculated size much as a GIS system would.

GENERATE CONSTRUCTION DRAWINGS

Thereafter you can generate construction drawings such as layout plans and long sections or calculate quantities. The ground profile is automatically extracted from the supporting digital terrain model.

Sewer is the only analysis and design program for foul water networks which combines a powerful design engine with drawing and terrain modeling functions.

Back to top

Sewer Functions

 

DESIGN PARAMETERS

• Minimum and maximum velocity • Proportional flow depth • Minimum/maximum culvert slopes • Drops, defined steps, inverts common or soffits common in   manholes • Supports pipes, box culverts, portal culverts, and custom culverts   such as egg-shaped sewers • Define culvert types, sizes and flow characteristics • Fix culvert inlet level, slope or size • Limit the flow in any culvert and direct the excess flow to another   manhole • Stormwater infiltration as a percentage of inflow

 

	Unit Flow inflow method
• 10 inflow classes with average daily flow and equivalent population   per unit • Attenuation curve • Up to 5 inflow classes per manhole plus point source inflow

 

	Harmon Formula inflow method
• Design unit flow • Contributors per unit

 

	Unit Inflow Hydrograph
• Dynamic time simulation spans up to seven days • Up to 5 unit inflow hydrographs per manhole • Continuity or Time Shift routing • View the flow hydrographs of single or multiple culverts

 

	Pumps
• Pump station with up to 4 pumps with different characteristics and   control levels • Specify pipe diameter, roughness and minor loss coefficients

 

	Quick Long Sections
• Scroll through branch sections • Display up to 3 ground lines and selected design data • Graphically move manholes up or down

 

	Analysis and Design
• Comprehensive network analysis • Auto numbering of branches and manholes • Analyze the entire network, a sub-network or just a branch • Flows attenuated according to inflow method • Flow calculations use internal culvert dimensions for hydraulic   accuracy • Calculates culvert size, slope, inlet and outlet level, flow, capacity,   velocity, flow depth and hydraulic grade

 

	Quantities (SABS 1200)
• User-defined trench widths and depth increments • Excavation length and volume • Bedding, backfill and selected backfill volumes • Manhole depths • Culvert lengths • Sorted by culvert type and size

 

	Drawings
• Long sections of single or multiple culverts with crossing pipes on single or multiple sheets • Plan layout with manhole and culvert annotations, schedule, manhole coordinate and connectivity tables • Annotations such as manhole name, cover level, invert level, depth, culvert type, size, length, slope, flow, capacity, velocity and flow depth Back to top