One of our newest equine additions showing off on the front lawn!
For those times when a binomial square is not enough The Troutbeck School shows you how to build your own trinomial cube of (a + b + c) out of lego. There is a nice long step by step guide on the school site:
http://thetroutbeckschool.com/how-to-build-a-trinomial-cub…/
The porch foundations were a bit more complicated than the main tree house. The porch is supported by what I may call an inverted 3D roof truss which spans between two tree stumps. Below you can see Didymus balancing on the mid point of the truss (temporarily supported at each end).

Didymus balancing on the inverted 3D truss
To make matters more interesting you can see that the last tree stump (on the right – below) was way too short.

Inverted 3D truss

The last stump was too short!
Thus we used an “Alpine” style cross made of simbi (metal) by Soko. This anchored the centre of the truss firmly into the tree stump with the help of some cement. So technically the tree house still doesn’t touch the ground (yet) – it just has a steel-cement support in one tree stump.

Metal cross inserted into hollowed out tree stump

Cement being added into the stump

Now a well anchored inverted 3D truss foundation

Porch floor and steps up to main house

Porch window

Looking north through the porch

Working on the stairs up

The banisters

Looking north again – with roof in place

Porch roofing structure and lintels

Its taking shape now
(Just in time for the phantom rainy season – its a drought year)
Roofing continues with a layer of Alububble insulation followed by the fish scale tiling.

Edmore the roofer

A roll of Alububble

A layer of Alububble insulation goes on first

Yes that is a tree sticking out through the roof

Rear view with Alububble in place

‘Chimney’ starts with green fish scale tiling

Chimney frame being hauled up

and lowered into position

Chimney frame in position

You get the idea

Looking good
Edmore sighting his lines for the roofing trusses – actually the rafters. Its the foundations that are inverted roofing trusses!

Edmore sighting his lines for the roof

Sight lines where the rafters will join the tree

In the tree tops with spirit level!

Gouging holes for the roof beams

More gouging

Trees were harmed in the making of this production

Walls and rafters, trees and trusses

Fufura (giant butterflies)

Roofing slats going on the the rafters

Trusses and rafters

Roofers in action

Roofers in action

Didymus

Is that a tree in your roofing?

Nice view of the ongoing construction