(ii) In using the “extension below load” method, the whole pressure (or “extension beneath load”), akin to the stress at which the 0.2 per cent everlasting strain happens could be decided with adequate precision by calculating the elastic enlargement of the gauge size beneath appropriate load and including thereto 0. https://bar-178-rtp41581.blogspothub.com/26901910/bar-178-rtp-fundamentals-explained