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- Roof Plan to 3D Roof
The following is a powerful tool in the Revit arsenal for creating almost any roof for which you can draw a roof plan. This works for 45 degree bays as well as other nonstandard roofs.
1. Create a flat roof that extends past walls to desired overhang. Uncheck "defines slope" option.
2. Finish roof
3. Draw Roof Plan using detail lines on top of roof in roof view. ( I like to give my detail lines a new color to separate them from other lines.)
4. Click on Roof and choose "Add Valleys and Ridges…" button from options bar
5. Draw over the hip, valley and ridge lines to cut the roof into separate pieces. (Draw carefully as small mistakes in joining hips/valleys with ridge lines can create strange pieces of the roof.)
6. Calculate the ridge point elevations using the rise and run of the roof. (If a roof rises 6:12 and it is 20' from the ridge vertically to the edge of the overhang the rise will be 10')
7. Choose the "Add new points…." Button and enter the elevation change then click to the location of end of ridges.
8. View in 3D view.
9. You will probably have to move the roof down so that the roof sits on top of the walls.
10. If you have made mistakes the " Select and modify points and edges…" Button allows you to move things and the "Reset Shape" option takes you back to the flat roof.
- Temp Dimensions
Under the "Settings" drop down menu "Temporary Dimensions" one can control where the temp. dim. measures from. I prefer Faces for walls and Openings for doors and windows. This allows me to easily set a door or window a specific distance from the face of the wall i.e. 6".
- Multiple Copies
Revit has many options for multiple copies - Move, Copy and Array commands all create multiples copies. With Move you can select copy multiple from the options bar and use temp dimensions to place the objects. (Notice the "Constrain" option which acts like ortho in AutoCAD.) Similarly Copy allows multiple copies it checking it on the options bar. Array is a third option for multiples allowing linear and radial copies.
- Linetypes
Linetypes are controlled and created in the "Settings " drop down menu under "Line Styles". This is similiar to AutoCAD layers dialogue box in that the name, width, color and pattern of a line can be assigned here.
- Dimension Text
A new feature in Revit 2009 is the ability to add text to dimensions. By clicking on the dimension value a dialogue box comes up allowing replacing the value with text - not numbers. Or adding text above, below, before or after the Dim. value.
- Drafting Lines vs Model Lines
A common mistake by beginners is to use model lines when one only wants to see these lines in the view where they are created. For instance, when creating lines in a detail view. If you use "Detail Lines" found on the "Drafting" Tab, they will only show up in the view they were created in.
- Temp Dimensions
by Faith Allen