. . . have a look at how the experts do it!
That long steel across the front of the building, supported by two uprights, is there because the distance across the new frontage is too long for one timber to span.
And when it comes to the complicated matter of constructing the joists for the ceiling, have a look at the children’s room:
I love the fact that the ceiling will have a slope at the playground end (see bottom left of the picture). Gordon says the kids won’t notice, and of course they won’t. But there is something about going into a visually pleasing space that immediately lifts the spirit – whether or not you want to analyse what it is. And my analysis is that this is sheer artistry.