Duct Sizing Settings dialog

Used to define design data and set size criteria for a duct system in duct system sizing computing and sets tool options and reporting options for presentation and reporting.

Opens when the Settings button on the Duct System Sizing dialog is accessed.

Setting	Description
Design Data	The unit system and the system data in the form of physical and environmental parameters and their limits are set here. Unit System - Displays the native unit system applied to design data parameters. The unit system gets set to one of the below options: Imperial Metric The design file unit is selected by default. Note: The currently set units are displayed in bracket against the duct design data and for size and dimension fields. Duct Design Data — Various physical parameters of a duct system are defined here. Limit Duct Velocity — Duct velocity limit is set here. Enter a new value to override the default value, as required. This is the Main Duct Velocity value displayed in the header on the Duct Sizing - Section summary dialog. Material Type — The material type for duct is set here. Select the material type that is best suitable for your project. Roughness - Displays the roughness value for the selected duct material. Air Temperature — Sets the value of air temperature for proposed air flown though duct. Overwrite the default value to actual in design. Atms Pressure — Sets atmospheric pressure value. You can override the default value to suit the one best for your site. Air Density - Sets air density value. You can override the default value that fits the best for your source equipment.
Size Criteria	The size criteria allows defining shape and dimension of the duct system as well as setting incremental step or standard range to restrict taking aberrant sizes in computing. Circular Ducts — Sets nearest incremental steps or apply a standard range criteria that restricts the diameter within a given range and apply the step value for next higher dimension. Nearest Increment — When selected, the Increment Step can be set to define the value for the step. This value is taken as an increment to define next higher diameter. Increment Step can set it to either 1 or 2. "1" indicates all the standard calculated values and "2" indicates only even values from the calculated list of values. Standard Range — Enabled when Nearest Increment is deselected. When selected, you can feed the values for minimum diameter, maximum diameter and step value to increment the diameter within the range. Min Dia — Sets the minimum value of diameter, the range starting from. Max Dia — Sets the maximum value of diameter, the range end. Step — Sets the increment step value for the diameter taken in computing duct sizing. The Step can set it to one of the positive integers: i.e. increment of 1 or 2. Equivalent Diameter Equation — Sets one of the standards that provide equivalent diameter values computed using the standard equation. The available options are: CIBSE ASHRAE Rectangular and Oval Ducts — Sets shape, increment step value and range of aspect ratios taken in computing. Shape — Sets the non-round duct shape. The available options are: Rectangular Oval Increment Step — Sets the increment step value for the dimension of duct taken in computing. Increment Step can set it to either 1 or 2. "1" indicates all the standard calculated values and "2" indicates only even values from the calculated list of values. Max Aspect Ratio — Sets the maximum value of aspect ration (width to depth, in case of rectangular) for the duct size calculation. Min Aspect Ratio — Sets the minimum value of aspect ration for the duct size calculation. The Aspect Ratio is ratio of width to depth (w/d) of rectangular or oval ducts.
Reporting Options	Sets the report style and adds a logo image in report heading. Reporting Style — The selected reporting style inherits the report presentation according to the format defined in the style. The available style options are: Apex Aspect Civic Corporate Office Normal Solstice These style sheets inherit internal style attributes and shades defined for title, caption, table data and page info. Logo — Defines the image as logo to appear on every report head. Browse — Opens the folder to select an image file that is to be assigned as logo. This image may serve as company logo or brand printed in the headers on each sheet of report.
dialog controls	OK — Saves the current settings and closes the dialog. Cancel — Closes the dialog without changing any settings.