Calculation - Basic
- Question
Answer
BASTIAN searches for constructions with data covering the frequency range as specified in the PREFERENCES dialog box. In case of measured data it may be that there are no data down to 50 Hz available. You may create a copy of a construction and extend the frequency range down to 50 Hz manually (using YOUR experience). A safer way is to ASK US to calculate input data for specific constructions or talk to the manufacturer about updates.
Furthermore, if impact sound transmission is selected only those constructions will be displayed which have impact data available, ranging down to 50 Hz (see manual). TURN OFF the hammer icon if only airborne sound data are entered, e.g. for small elements. This holds for additional layers as well. The other way around is also true, you must insert airborne insulation values to avoid having a blank list in the database chooser!
- Question
Answer
A) Doors as sound transmitting elements are only considered in case they are situated inside the separating element. Doors or windows inside flanking elements reduce the excited (sending side) or radiating area (recieving side) of the flanking element. This can be considered through the dialog box GEOMETRY DATA (Extras menu). Note, from then, all geometry data are entered manually.
B) If the intention is to consider flanking transmission by leakage or direct sound transmission, e.g. via a door-corridor-door path, calculate separately the assembled flanking transmission. Add this value as a fictive flanking element (system) to the database and select it in the calculation table.
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Answer
The value displayed in the table of the worksheet is the sound reduction index referring to the total (gross) area of the separating element. E.g. for a door of S=1,5 m2 inside a separating element with the total area Stot=15m2 the figure displayed in the table is 10*lg(1,5/15)=10 dB larger than the weighted sound reduction index Rw of the door.
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Answer
As default-configuration the sorting of the flanking paths is set to "Recieving side". This means, that as far as the separating element is concerned, all flanking paths Fd are added to the separating path Dd. This causes the sound reduction index via the separating element to change with each selection of a flanking element. If you select the sorting by junction (Menu Worksheet Sorting) all flanking paths will be added up below the corresponding flanking element leaving the path Dd for the separating element only (see manual).
- Question
Answer
A) Hold down the shift key and double click on one of the vertical borders of the table grid. The size of the column widths adapt to the open worksheet. Doubleclick only fits the columns to display all information which typically returns a too wide table to fit the window. Some data entries are long, which makes the worksheet too wide to be practical. Use SHIFT+d-click instead.
B) Hopefully, this function will be automated in future versions, we still ask for this.
- Question
Answer
A) Note that the manual is located in a separate folder on the BASTIAN CD.
Please copy this to all local drives where BASTIAN is installed, and make a shortcut on the desktop or in the START menu.
B) NB! Replace old manuals (PDF-files) when the current version is installed.
