Extra "Primitives"

I made these to save you some Boolean Twiddling and wire frames cluttering up your window. I cannot count the times I made one or the other of them myself.

In Bryce 3D or 4, import xtra_primitives.obp into the obects popup menu on the Create Palette and from there into your scene.
You can scale, rotate, reposition and group them for Boolean operations just like Primitives.
Just like Bryce Primitives, they feature a low Polygon count, and their proportions conform to the same scale conventions, i.e. multiples of 10.24 Bryce Units, wherever it was feasible.

The ones in the bottom row of the picture should be useful for stretching to make girders for all kinds of construction work - or walls for houses (you can always cut Boolean Windows into them)