Summary of all features

  • Edit

Go to:

3D city modelling

  • 3D visualization of conceptual street design, block massing and open spaces
  • Drawing and editing of streets, spaces and buildings.
  • Import and export to DXF drawing format.
  • Import images files and place on ground plane.
  • Create models using different block templates - semi-detached/detached housing, terraced housing, mixed-use perimeter blocks, buildings and open spaces.
  • Generic 'mixed use' block template can be used to enter % of different land uses within the block.
  • Model can be organized into groups (like CAD layers) and phases (like CAD layers except with a start and end date).
  • Custom library of components can be created, which can be easily inserted into the model. For example, wind turbines with an electrical energy generation rate or housing developments with known quantities can be stored in this library.

City design analysis

  • Create custom library of land use types.
  • Set land use of individual floors within buildings, or subdivisions within floors.
  • Set average unit area within floors or subdivisions and estimate number of units.
  • Keep track of plot ratio, residential density, average unit size, plot size, block area, habitable room density and number of storeys.
  • Set opening times and population/occupancy rates for different land uses.
  • Create custom attributes for environmental ratings, ownership type, conservation value or any other indicators.
  • Histogram showing the quantity of each land use type in the model (can be filtered by group and/or phase). 
  • Pie charts showing the mix of residential unit types.
  • Overall average dwelling size.
  • Overall net residential density in residential units and people. 

Sustainability analysis

  • Set default electrical and other energy consumption and generation rates, as well as refuse generation and water consumption rates, for any land use.
  • Specify target recycling rates and see instant calculation of estimated quantity of recycled material.
  • Set rates by day, week, month or year, and to apply as a total, or per person, per unit area or per unit.
  • Specify embodied carbon in kgCO2e/sqm and see estimated totals for the model.
  • Specify operational carbon rates for energy and resource use, and assumptions for car travel, and total carbon emissions in kgCO2e/year will be calculated.
  • Pie chart summary of total built-up area, parks/green space, woodland and water in the model.
  • Summary of different types of trees by number.
  • Pie chart showing the mix of residential units achieving a specified environmental criteria.
  • Summary of overall quantities of residential and non-residential development (by floorspace or unit numbers) which have achieved specified environmental criteria (e.g. Code for Sustainable Homes Level 3).
  • Summary of % of rectangular blocks where the long axis lies within 15 degrees of the east-west axis.
  • Summary of % of rectangular blocks where the long axis is at least 1.5 times longer than the short axis.

Liveability / Quality of life analysis

  • Chart showing relative activity over the 24 hour cycle, based on opening times and estimated population. Can be used to quickly identify times in the day where a masterplan is busy or quiet.
  • Overall public realm density.
  • Sports / recreation space per person.
  • Number of people per doctor.
  • School provision in number of spaces.
  • Average number of parking spaces per residential population.
  • Average distance to hospital emergency department.
  • Average number of parking spaces within 5 minutes' walk.
  • Total number of trees.
  • Dwellings within 750m, 500m and 300m of an area of public green space of specified area.
  • Buildings within a specified distance of a public green space of specified area.
  • Green space per person.
  • Green space per 1000 residents.
  • Number of dwellings within a specified number of minutes' walk from any speciifed land use (e.g. green space), based on user-defined walking speed assumption (by default 400m = 5 mins' walk).
  • Calculation of average distance and maximum distance from a dwelling to any specified land use or object in the model.
  • Set thresholds for average distance and maximum distance, and warnings will be generated if these thresholds are exceeded. For example, you can say that no dwelling should be more than 300m away from a bus stop, and blocks which do not comply with this will be highlighted.
  • Calculation of the total length of frontages with certain densities of entrances (as a broad measure of the vitality and safety perception of a street). Entrance density is measured in entrances per 100m and the categories are 'greater than 15', 0-15, 6-10, 3-5, 'less than 3' and '0'. These categories correspond to Grade A, B, C, D and E frontages, as defined in the UK Urban Design Compendium.
  • Calculation of % of total street frontage where there are entrances every specified distance or less.
  • Average population per entrance (this is a crude measure of how well maintained public areas within apartment blocks may be, and whether formal management may be needed for residential development).
  • Average overall entrance spacing.
  • Overall ratio of residential to non-residential GFA.
  • Overall ratio of residential non-residential population.
  • Total quantity (in units and GFA) of development in different block typologies, and on different floors.
  • Number and % of blocks with 1, 2 or more different ownership types within the building, as a measure of diversity of tenure.

Movement engineering and street design analysis

  • Create library of street types - combinations of any of the following streetscape elements: pavements, vehicle lanes (travel or curb lanes), reservations (medians), on-street parking lanes, cycle lanes or bus lanes.
  • Edit widths, colours and ground level of streetscape elements.
  • For non-vehicle elements, add trees at pre-defined spacing.
  • Add element-specific capital cost and maintenance values.
  • Total length of cycle lanes, and % of the total length of the route network.
  • Total length of bus lanes, and % of the total length of the route network.
  • Accessibility measure - % of the pedestrian network which is less steep than 1:50, between 1:50 and 1:20, between 1:20 and 1:12, and steeper than 1:12.
  • Average width of all streets, cycle lanes, bus lanes, pavements and vehicle lanes.
  • Total numbers of parking spaces at ground level, on-street, basement, above ground level, parking in City Items (imported CAD objects).
  • Average number of parking spaces per dwelling.
  • Average parking requirement per dwelling.
  • Total number of parking spaces existing in the model.
  • Total requirement for parking spaces in the model.
  • Net surplus or deficit of parking spaces.
  • Total number of cycle parking spaces existing in the model.
  • Total requirement for cycle parking spaces.
  • Net surplus or deficit of cycle parking spaces.
  • Number of parking spaces in 'Car Park' land use types can be specified as an exact number, or as a rate in units of area (e.g. sqm) per parking space.
  • Default trip generation rates can be set for each land use for daily trips, AM peak in, AM peak out, PM peak in and PM peak out. These can be specified as an absolute number, or as a number of trips per person, unit area, unit or parking space. Defaults can be overriden for individual elements in the model.

Viability modelling and analysis

  • Assign costs and values to any land use, block, route, tree, junction or other element in the model. 
  • Cost and values can be set as absolute values, or can be set as a rate per unit area of GFA, unit area of NFA, residential unit, non-residential unit, any unit, non-residential person, resident, any person, hour of activity/day, metre of length (routes only), number of habitable rooms, parking space, vehicle trips per day, total length of vehicle routes, kg of embodied CO2, emissions of CO2 in kg/year, electrical energy consumption, gas energy consumption, other energy consumptions, electrical energy generated, water consumption, refuse generation or quantity of refuse recycled.
  • Costs and values can also be set as a % of construction cost, sale value, rental value or sale and rental value.
  • Default cost and values can be entered for any element type or land use, or this can be overriden for each individual element in the model.
  • Value items can be capitalized at an annual % rate e.g. £20/sqf capitalized at 6% per year in perpetuity.
  • Total costs and values can be viewed for the whole model, or can be filtered to show only defined groups or phases.
  • Costs and values can be residualized against a target net value, IRR, profit on cost or profit on value.
  • Costs and values can be set to occur at a fixed point in time, or assigned to user-defined phases, or set to occur at trigger points. For example, the cost of a new piece of road infrastructure can be set to occur when the quantity of development in the model exceeds 200 houses. The actual timing of the cost will then vary depending on changes to the planning model, allowing timings to be fine-tuned to improve the financial performance of a scheme over time.
  • Pie charts to display relative quantities of costs and values per group, phase or land use type.
  • Line chart to show quantity of costs and values over time, as well as cumulative net position as an approximate measure of cash flow over the length of a project.
  • All data from the financial model can be exported to Excel or a text file for more detailed analysis if required.

Outputs

  • CityCAD models are saved in an open, unencrypted XML format called 'URB'. An option to save in compressed URB (CURB) format is also available - this is a GZip compression that usually offers substantial reductions in file size.
  • Images can be exported from CityCAD in PNG, JPG, BMP, TIFF and GIF format, or exported to the clipboard.
  • Plan diagrams can be exported or printed to scale as images. The shading of blocks, city items and routes is customizeable, and there are options for including or excluding a legend, scale bar, north marker, any imported images, a scale grid, imported DXF base maps and other graphic options. Lines can be anti-aliased and blocks in hidden groups or phases can be indicated with a dotted line.
  • Sections through the massing of blocks and routes can be taken and exported as an image.
  • The 3D model can be exported as a KML file, with customizeable options for location (WGS84 latitude and longitude) and placemarks.
  • The 3D model can be exported as a 3D DXF CAD model, with building floors and routes organized into DXF blocks.
  • The 3D model can be exported as a 2D DXF plan, with an option to flatten the model, moving all geometry to the XY plane.
  • A simplified '3D Outline Export' option is available to export only block outlines and route centrelines, which can be then imported into civil engineering CAD applications for detailed earthworks and road corridor design.
  • Data in the model can be output to a multi-sheet Excel spreadsheet file, or to individual CSV files.
  • Data can also be visualized in the 3D model using the customized shading features. For example, you can set the model to highlight blocks where the average unit size is below a certain quantity, or where the costs are above a certain level.