Sorry it's a bit later than I promised Damien, I had photo upload issues, the page that usually came up to load them had disappeared but all's ok now.
These are the pallets I am using, they are 24ft long by about 7ft 6ins. wide. The long timbers are 3&3/4 x 2&3/4 but have a joint at about 20ish ft., some good timber. We get 20 of these on the delivery lorry at a cost of £250 making them the bargain price of £12.50p each
The base and roof trusses.
here I am checking the height and location of the roof trusses. The frame leaning up is for the end (left hand side of the photo).
I am a bit further on now but being hampered by the weather, I'll get some more shots soon