DAA/ Bentley WaterGEMS V8i User’s Guide Technical Information Resources Glossary Bentley WaterGEMS V8i User’s Guide 1-i WaterGEMS. distribution network model created in Bentley WaterGEMS and performing a hydraulic transient entered manually to complete the layout. You may need to. WaterGEMS® is a hydraulic and water quality modeling solution for water distribution systems potential manual-input mistakes. BENTLEY WATERGEMS.

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The lump-sum area for which a flow is known must be a GIS polygon. From the pipe, the demand then is distributed to the nodes at the ends of the pipe by using a distribution strategy. An example of meter assignment. Deep Excavation A Practical Manual. The lump-sum area is a polygon for which the total lump-sum water use of all of the service areas and their demand nodes within it is known metered but the distribution of the total water use among the individual nodes is not.

Allocation Allocation uses the spatial analysis capabilities of GIS to assign geocoded possessing coordinate data based on physical location, such as an x,y coordinate customer meters to the nearest demand bentoey or pipe. The spatial analysis capabilities of GIS make these applications a logical tool for the automation of the demand allocation process. Because meter route A has 11 nodes, the demand at each node would be 5 gpm 0.

Discover the wateregms performance of DxO Optics Pro. You can base the water-use data for these lump-sum areas on system meter data from pump stations, treatment plants or flow control valves, meter routes, pressure zones and TAZ traffic analysis zones.

Log In Sign Up. Skip to main content. If the data relates to projected values, you can use it for demand projections. The lump-sum area in this case is a polygon feature class that represents meter route areas. The proportional distribution option by area or by population divides the lump-sum flow among the service polygons based upon one of two attributes of the service polygons — the area or the population.

Enter the email address you signed up with and we’ll email you a reset link. Automated construction of the service polygons may not produce the desired results, so you may need to adjust the polygon boundaries manually, especially at the edges of the drawing. The following are descriptions of the types of allocation strategies that you can apply using LoadBuilder. Sometimes you must use the flow distribution technique to assign unaccounted-for water to nodes and when any method that uses customer metering data as opposed to system metering data is implemented.


Do you use social media — such as Facebook or Twitter updates, YouTube videos, or discussion forums — for work-related purposes? Due to the difficulties associated with manually loading the model, you can use automated techniques developed to watsrgems with this task. This technique is unnecessary if all demands wattergems accounted for using one of the other allocation strategies.

For each of these meter route polygons, the total flow is known. The conversion required will depend on the source data used. Help Center Find new research papers in: Click here to sign up.

Bentley WaterGEMS V8i (SELECTseries 5)

In addition, you may not know the actual location of the service meter. Depending on how watergwms feature classes intersect, service areas may contain multiple demand types land uses that are added and applied to the demand node for that service polygon.

Remember me on this computer. You can use various data types with this technique, including future land use, projected population or demand density in polygon form with the polygons based upon traffic analysis zones, census watergejs, planning districts or other classifications.

You may need to translate the data contained within the source — such as population, land area, etc.

This strategy requires the definition of lump-sum area or population polygons in the GIS, service polygons in the model and their related demand nodes. The watergeme the percentage of the lump-sum area or population that a service polygon contains, the greater the percentage of total flow assigned to that service polygon.

Many of these data types do not include demand information, so further data conversion is required to translate the information contained in the future condition polygons into projected demand values.

Productivity Corner: Using Bentley WaterGEMS with GIS Data for Water Demand Allocation | Cadalyst

Actify SpinFire Professional v8. Whether in automatic or manual mode, numerous intelligent tools can help you perfect your images. Service polygons define the service area for each of the demand nodes figure 2. All exclusively from Cadalyst!


Bentley WaterGEMS V8i (SELECTseries 5)

The wstergems location of the meter in the GIS is not necessarily the point from which water is taken from the system, but it may be the centroid of the land parcel, the centroid of building footprint or a point along the frontage of the building.

Meter assignment can prove less accurate than the more complex allocation strategies because the nearest node is determined by straight-line proximity between the demand node and the consumption meter.

Distribution This strategy involves distributing lump-sum area water-use data among a number of service polygons service areas and, by extension, their associated demand nodes. AspenONE Engineering manuall v8. Assigning metered demands to nodes is a wahergems demand allocation technique, meaning that known point demands customer meters are assigned to network demand points demand nodes.

Note that you can use these data sources to assign current demands; the difference between the two being the data that is contained within the source. These techniques are similar to the flow distribution allocation methods, except that the type of watertems feature class that is used to intersect with the service feature class may contain information other than flow; for example, land use or population.

Meter assignment is the simplest technique in terms of required data because you don’t need to apply service polygons figure 1. Spatial allocation of demands is the most common approach to loading a water distribution model.

Point Demand Assignment A point demand assignment technique is used to assign a demand directly to a demand node. When using the nearest pipe meter assignment strategy, the demands at a meter are assigned to the nearest mmanual. Every step of the loading process is enhanced from the initial gathering and analysis of data from disparate sources and formats to the employment of various allocation strategies.

After an appropriate conversion method is in place, the service feature class containing the service areas and demand nodes is overlaid with the future condition polygon feature class.