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spaces are measured 0.15m into the shaft. The distance is measured from the
inside of the wall and into the shaft. When a shaft is not in the same zone as
its adjacent spaces, the usable boundaries of the adjacent spaces are measured
to the inside of the wall.
NOTE The interaction between the spaces and zones will only work as described
if the zones are in the same drawing as the attached spaces.
Calculation Rules for AutoCAD Objects
You can use AutoCAD objects like closed polylines or rectangles to generate
a space that is deducted from an associative space (see Deducting Spaces from
an Associative Space on page 2935.) You could do this for example to represent
construction spaces or otherwise unavailable areas. Since AutoCAD objects
cannot be classified to control their behavior, the following standard behavior
is applied to enclosed deducted spaces formed by AutoCAD objects in SIS:
â– Net area: the enclosed area is deducted from the net area.
â– Usable area: the enclosed area is deducted from the usable area.
â– Gross area: the enclosed area is not deducted from the gross area.
Calculating Spaces Based on the SIS Standard | 3171
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