IN determining which branch of structural engineering should be treated in this paper,
cognisance was taken of the fact that during the last few months, several requests have
been made for information regarding roof trusses which have been fabricated and erected
by means of welding. It seemed, therefore, that the subject would be of sufficient interest to members to be given here, especially as the introduction to welded construction might be made more easily by way of welding roof trusses, and by incorporating them into other forms of construction until experience of the process has been gained, when further portions or the whole structure, could be undertaken with confidence.