Roof Tool Settings

For a description of generic settings common to all tools in the Toolbox, see Working in Tool Settings Dialog Boxes.

For general information on how to create and edit roofs, see Roofs.

Roof Geometry and Positioning Panel

RoofGeoPanel.png 

Pivot Offset: Enter a value here for the offset of the pivot line from the Roof’s Home Story.

Home Story

See Home Story.

The Roof pivot height is physically linked to its Home Story. If you later modify the Home Story’s position (e.g. redefine the floor level), the Roof will change its position.

Absolute Pivot Elevation [to Project Zero]: Enter a value here for the elevation of the pivot line, as measured from the Reference level (by default, this Reference level is Project Zero). Click the pop-up arrow to change the Reference level, if needed.

Note: Reference levels are defined at Options > Project Preferences > Reference Levels.

Roof Structure: Click one of these icons to define the Roof as either Basic or Composite, then choose an attribute that reflects its structural properties:

For a Basic Roof: use the pop-up to choose its Building Material.

BMPopupRoof.png 

Roof Thickness: Enter a value for the thickness of the roof pane, measured either perpendicularly or vertically to the face of the roof. Click the pop-up arrow to choose a way to measure the roof thickness.

RoofThicknessOption.png 

Note: The thickness of a composite Roof is the total value of the individual skins as set in Options > Element Attributes > Composites. If you are creating a composite Roof, the thickness field is consequently not editable here.

For a Composite Roof: use the pop-up to choose its Composite structure.

CompPopupRoof.png 

Note: This pop-up shows only those Composite Structures whose “Use With” control includes Roofs. Composites are defined at Options > Element Attributes > Composites. 

Roof Geometry Method: When defining default settings before creating a Roof, choose either Single-plane or Multi-plane Roof geometry.

RoofGeometry.png 

If Multi-plane is selected here, the Multi-plane Geometry panel of Roof Settings is activated.

See Roof Multi-plane Geometry Panel.

Roof Pitch: Enter a value for the pitch (slant angle) of the roof.

Note: The pitch can be measured in degrees, in percentages, or (if you are using imperial units) in the amount of roof rise per 12 feet or 12 inches of horizontal run. Click the arrow icon next to the Roof Pitch field to display these unit choices.

If your Roof Settings refer to a Multi-plane Roof, then the pitch unit set here is also used when setting the pitch of individual Roof levels.

See Roof Multi-plane Geometry Panel.

RoofPitch001.png 

The Roof pitch is typically positive, but it can also be a negative value, in which case the resulting Roof is “reversed”: its roof plane will slope downward.

Edge Angle: Choose an angle (perpendicular, vertical, custom) for all roof edges.

If you choose custom, enter the desired angle value in the field at right.

Note: You can set a different custom edge angle for any single edge(s). If you have done so, a yellow “custom” icon appears alongside the edge type setting control in Roof Settings.

See Customize Edge of Roof or Roof Hole.

CustomRoofEdgeYellow.png 

Roof Floor Plan and Section Panel

See Element Display in Floor Plan and Section

See also Use Symbolic Display in Floor Plan for Single-plane Roofs and their Skylights (as in ARCHICAD 14 and before)

Cover Fills

See Assign a Cover Fill.

Roof Model Panel

This panel controls the 3D display of the roof.

Override Surfaces: Click the toggle button of any or all three pop-ups if you wish to override the surface assigned to this element (in its Building Material). You can override the surfaces of the Roof’s top and bottom, and/or all Roof edges.

See also Override Surfaces With Surface Painter.

Note: The top surface override, if it is a vectorial hatching, can also be applied as a cover fill for the Roof (by checking the “Use Fill from Surface” box in Floor Plan and Section panel of Roof Settings).

Moreover, if the cover fill has a customized fill origin (via Link to Fill Origin option), the 3D Model will reflect that fill orientation too.

For a composite Roof, the “top” surface is the first listed skin of the composite, in Composite Settings.

Click the chain icon to assign the last surface chosen to all parts of the element. Deselecting the chain icon will restore the surfaces that you originally set for each part of the element.

Note: The chain icon is available when all the surfaces use overrides.

If you have customized any of the Roof’s Edge surfaces or Top/Bottom surface (in the Custom Edge Settings or Custom Plane Settings dialog boxes), a yellow “custom” icon appears alongside the surface setting control in Roof Settings, indicating that one or more edge surfaces have been changed from the general setting.

See Customize Edge of Roof or Roof Hole. See also Customize Roof Plane

Custom Texture Alignment: If this message is activated, it indicates that the currently selected roof (already placed in the project) has been assigned a custom 3D texture. In this case, the Reset Texture button is also activated. Click to restore the origin of the Texture of the selected roof.

For more information, see Align 3D Texture.

Trimming body: Use this control to define the geometry of the Roof’s trimming body. The trimming body will cut other elements in accordance with this geometry, when you trim another element to this Roof.

Pivot lines down

Contours down

Note: To see these trimming bodies while you work (in the 3D window only), turn on Trimming Bodies in the View > On-Screen View Options menu.

PivotandContour.png 

For more information, see Trim Elements to Roof or Shell.

Roof Multi-plane Geometry Panel

This panel is active only if you have selected a Multi-plane Roof, or if the Multi-plane Geometry Method is selected (Geometry and Positioning Panel) of Roof Default Settings.

Roof levels: Use these controls to add one or more levels to a Multi-plane Roof.

By default, a Multi-plane roof has one level.

Click Add to add another Roof level.

In the table, adjust the pitch of any roof level as needed.

Elevation refers to the point at which the new level begins:

AddRoofLevel.png 

Eaves overhang:

Offset: Enter a value for the distance of the eaves overhang from the pivot polygon. This value is applied to the Roof as a whole.

You can adjust this value for any particular roof plane in the Customize Roof Plane dialog box.

See Customize Roof Plane.

If you do so, the value in Roof Settings (applied to the roof as a whole) does not change, but a yellow “custom” icon appears alongside the eaves overhang control in Roof Settings, indicating that the eaves overhang value for one or more roof planes has been changed from the general setting.

If you later change the Eaves overhang “offset” value in Roof Settings, the yellow “custom” icon changes to red. This means that the Roof’s eaves overhang is going to change: do you want to apply this change to the custom-overhang planes too? If so, check the box at the bottom of Roof Settings (Apply changes to custom planes and/or edges too). If you do not check the box, your custom eaves offsets remain the way you set them.

EavesOverhang.png     CustomEavesRed.png

Manual: The overhang value control changes to “Manual” if you edit the roof contour graphically.

See Edit Roof Contour.

At any time, you can undo these manual edits by clicking “Offset” and entering a fixed value for the eaves overhang.

Curve resolution

Choose an option for dividing the segments of curved planes in this Roof.

By arc: Divides the curved plane(s) into the given number of segments.

By circle: Divides a full circle into the given number of segments, and applies that geometry to the curved plane(s) of the Roof.

You can customize the curve resolution setting for any individual Roof plane.

See also Customize Roof Plane.

See Add a Tower to the Roof.

Skylights treat segments as curves: When a Roof plane with a curved pivot line changes its geometry, ARCHICAD can adjust any skylights in the plane in one of two ways:

Position skylight as onto a curved surface: this is the default setting, with the checkbox enabled in the Multi-plane Geometry panel of Roof Settings. Skylight geometry is adjusted so that it smoothly adjusts to a curved surface.

Position skylight as onto a flat plane: if you uncheck the checkbox, ARCHICAD will adjust the Skylight geometry so that it fits flat onto the Roof plane.

See also Position Skylight to Curved Roof Plane.