oak frame completed at last

We have finally completed the oak frame for the back porch - still have the roof to put on it, but this is a start.  Most of the frame is either jointed or fastened together with oak pegs. We have found that any screws used to hold stuff together temporarily tend to shear off when we try to get them out again. Apparently this is because of the tannin in the wood.

I always imagined that oak frames would be fairly simple, but here is one-half of one the corner window sill joints. We have routed out a groove for the window units, and will fit the units so there is apparently no extra 'frame' showing, ie the window units fit directly into the oak frame. They won't, of course, but that is what it will look like.
The gaps under the window sills will be filled in with stonework to match the back wall of the house, which will also stabilise the whole structure. We are going to use slate paving slabs from the garden to lay on the floor.