Last time we looked at how to use some of the tools used to create walls, slabs (floors) and simple flat rooves. This time I’m going to show you another way of making a flat roof and one method to create a pitched roof. There are still many, many ways of working with BricsCAD BIM, but this should give you a good starting point.

New Commands covered this time:

This time we will focus on new techniques for commands you already know.

Flat Roof

I created a flat roof by extruding some of the existing walls, tidying up the join and extruding a floor.

How to do this:
  1. Draw a line across the top.
  2. IMPRINT the line on the top face of the far wall shown (yellow). Delete the source object?: yes.how to make a roof BricsCAD BIM example project
  3. Select the top surfaces shown (orange).how to make a roof BricsCAD BIM example project
  4. EXTRUDE up.
  5. Use TCONNECT – ‘Connect to nearest’ to close the gap.
    Note: If you are not sure how to do this, check Part 1.how to make a roof BricsCAD BIM example project
  6. Draw a RECTANGLE in the gap.
    Note: Use DUCS to align the rectangle with the top face of the lower layer walls.how to make a roof BricsCAD BIM example project
  7. EXTRUDE the rectangle up to create a flat roof.how to make a roof BricsCAD BIM example project

Sloped Roof

I used a polysolid to create a base for my roof, edited it and then connected the exterior and interior walls to the roof.

How to do this:
  1. Use POLYSOLID to draw a roof.
    Note: Hit Shift to change the UCS.how to make a roof BricsCAD BIM example project
  2. MIRROR the roof. how to make a roof BricsCAD BIM example project
  3. Use LCONNECT to join the solids.how to make a roof BricsCAD BIM example project
  4. Use PUSHPULL to set the correct overhang.how to make a roof BricsCAD BIM example project
  5. SLICE the walls shown (blue).
    Note: If you are not sure how to do this, check part 5.how to make a roof BricsCAD BIM example project
  6. Repeathow to make a roof BricsCAD BIM example project
  7. Select the top faces of the wall solids (orange).
  8. Connect to Nearest.how to make a roof BricsCAD BIM example project
  9. Shorten the overhang of the roof with PUSHPULL.how to make a roof BricsCAD BIM example project
  10. LCONNECT to tidy the join.how to make a roof BricsCAD BIM example project

Finishing up

Use BIMCLASSIFY to assign the appropriate BIM information to the newly created roof: ‘BIM Roof’. If you can’t remember how, check part 8.

how to make a roof BricsCAD BIM example project

Next Time

Now it’s taking shape! Now the building has a roof. Join us next time when we look at how to windows and doors using BricsCAD BIM.

Don’t have BricsCAD yet?

Easy to try, easy to buy, easy to own. That’s BricsCAD. Try all of our products, for free for 30 days at www.bricsys.com. Freedom of choice, plus perpetual (permanent) product licenses that work with all languages, in all places. You’ll love what we’ve built for you with BricsCAD.

Keep Reading

  1. Moving from 2D to 3D CAD
  2. 3D Drawing from engineering plans
  3. Drawing everything but the kitchen sink
  4. More Advanced Modeling
  5. The Shower
  6. The Sink
  7. The Toilet
  8. Walls and Floors
  9. The Roof

Note: This series is intended as a guide to demonstrate how to use different aspects of 3D modeling tools. It may not always demonstrate the fastest way of getting the result. Keep coming back to see if we cover a faster technique at a later date.