# Chimney

The 'Chimney' function allows chimneys to be defined in various ways. The dialog box consists of two sub-dialog boxes.

### **Chimney:**

**Ident number**: A reference number can be entered for the chimney. These can be components of the component type 'rod' or 'profile rod'. If the reference number contains a profile, the chimney will receive exactly that cross-section profile. This allows, for example, original chimney cross-sections from any manufacturer to be entered and displayed.

**Length**: If an identification number that provides a cross-section was used, this field is disabled. Otherwise, the longer edge of the chimney can be entered. In this direction the flues are also distributed when more than one flue is specified.

**Width**: If an identification number that provides a cross-section was used, this field is disabled. Otherwise, the shorter edge of the chimney can be entered.

**Bottom Edge Height**: Height at which the chimney begins. Offset chimneys can be created by first entering the lower section and then, offset, the upper section. The upper section begins at the height where the lower section ends.

**Top Edge Height**: Absolute height at which the chimney ends.

**Chimney Height**: Height of the chimney from its bottom edge to the top edge. This value can be entered as an alternative to the 'Top Edge Height'.

**Height Above Roof**: Distance by which the chimney protrudes above the roof covering. This value can be used as an alternative to 'Top Edge Height' or 'Chimney Height'. To access a disabled field, delete one of the two higher values (Top Edge Height, Chimney Height).

**Number of Flues**: If an identification number was used, this field is disabled. Otherwise, 0, 1 or 2 flues can be set. The flues serve only for the visually improved representation of the chimney. The flues are automatically distributed evenly along the chimney length.

**Flue Diameter**: Enter the desired diameter of the flues.

**Texture set**: Texture set for the representation of the chimney.

**Rafter Replacements**: In this field you select a setting for the automatic replacement of rafters. Using the edit icon at the right end of the field you can view and change the setting.

**Tie Beam/Brace Replacements**: In this field you select a setting for the automatic replacement of tie beams and braces. Using the edit icon at the right end of the field you can view and change the setting.

**Beam Layer Replacements**: In this field you select a setting for the automatic replacement of the beam layers. Using the edit icon at the right end of the field you can view and change the setting.

### **Sheathing:**

**Roof Layers / Beam Layers**: Sheathing for the individual layers in the roof surfaces and the ceiling fields.

**Tie Beams / Braces**: Separate sheathing for the tie beams and braces.

**Tolerance**: A tolerance can be set for each chimney to determine whether a rafter, a brace or a ceiling beam is replaced even if it penetrates the opening. If an element protrudes into the opening by no more than the set tolerance, it will not be replaced.

The 'OK' button places the chimney; the 'Align' button additionally aligns it obliquely to any chosen line.

With the following dialog box the chimney can be rotated by 90° with the right mouse button. When placing, any point can be chosen using all known snap and input functions (snap functions with the middle mouse button, coordinate entries via numeric input).

## Rafter replacement

At the top edge of the dialog box there is again the option to save the dialog box settings under any desired name. Under this name the setting can then be selected and used in the chimney input.

Any number of rafter replacements can be saved in one setting. However, this only makes sense if replacements are required in different positions. To switch from one replacement to the next, click the wide switch with double arrows at both ends. In the middle of the switch you can see how many replacements there are in the current setting (right number) and which of these replacements you are currently viewing (left number). This provides the option to define replacements for multiple rafter levels in a roof.

**Position**: In this field you select the position in which the replacement should be generated.

**Ident number**: Here you enter the reference number of the replacement timbers and filler timbers, or you check the checkbox at the right end of the field. If you enable this checkbox, the reference number field is deactivated because the reference number of the replaced rafters is then adopted automatically.

**Width**: Enter the width of the replacement timbers and filler timbers here, or set the check mark in the checkbox so that the width is adopted from the replaced rafters.

**Height**: Enter the height of the replacement timbers and filler timbers here, or set the check mark in the checkbox so that the height is adopted from the replaced rafters.

**Depth position**: This field allows the depth position of the replacement and filler timbers within the above-selected position to be influenced. With the options 'flush top', 'flush bottom' and 'center', the replacement timbers can be positioned automatically in the position accordingly. With the 'value' the timbers can be positioned freely and even pushed out of the position.

**Orientation**: The orientation of the replacement and filler timbers tilts the timbers in line with the roof slope or installs them plumb in the roof.

**Replacement direction**: For chimneys that are installed at an angle to the rafters, you can determine here whether the replacements should nevertheless be generated parallel to the chimney (= angled to the rafters) or whether they should continue to be generated perpendicular to the rafters.

**Connection**: Connection between the replacement timbers and the rafters. It is possible to select between the stored settings of different joint treatments.

## Collar beam/cheek beam replacement

At the top edge of the dialog box there is again the option to save the dialog box settings under any desired name. Under this name the setting can then be selected and used in the chimney input.

**Ident number**: Here you enter the reference number of the cheek-beam replacement timbers, or you check the checkbox at the right end of the field. If you enable this checkbox, the reference number field is deactivated because the reference number of the replaced cheek beams is then adopted automatically.

**Width**: Enter the width of the replacement pieces, or check the checkbox here as well so that the width is adopted from the replaced collars.

**Height**: Enter the height of the replacement pieces, or check the checkbox here as well so that the height is adopted from the replaced collars.

**Replacement direction**: For chimneys that are installed at an angle to the rafters, you can determine here whether the cheek-beam replacements should nevertheless be generated parallel to the chimney (= angled to the rafters/cheek beams) or whether they should continue to be generated perpendicular to the rafters/cheek beams.

**Connection**: Connection between the replacement pieces and the collars. A selection can be made between the saved settings of different connection treatments.

## Beam layer replacement

At the top edge of the dialog box there is again the option to save the dialog box settings under any desired name. Under this name the setting can then be selected and used in the chimney input.

**Position**: In this field you select the position in which the replacement should be generated.

**Ident number**: Here you enter the reference number of the replacement timbers and filler timbers, or you check the checkbox at the right end of the field. If you enable this checkbox, the reference number field is deactivated because the reference number of the replaced beams is then adopted automatically.

**Width**: Enter the width of the header members, or check the checkbox here as well so that the width is adopted from the replaced beams.

**Height**: Enter the height of the header members, or check the checkbox here as well so that the height is adopted from the replaced beams.

**Depth position**: This field allows influencing the depth position of the headers within the position selected above. With the options 'flush at top', 'flush at bottom' and 'centered', the header members can be positioned automatically within the position accordingly. With the 'value', the members can be freely positioned and even pushed out of the position.

**Replacement direction**: For chimneys that are installed at an angle to the beams, you can determine here whether the replacements should nevertheless be generated parallel to the chimney (= angled to the beams) or whether they should be generated parallel to the X-axis of the ceiling field.

**Connection**: Connection between the header members and the beams. You can choose from the stored settings of different connection treatments.
