On the basis of calculating the stresses in some locations the doors visit (Manhole) have moved along the pipes in about ~ 19 mm (at the highest temperature conditions during the year) so that when the design was considered to be measures to increase the rigidity of the door at the door location visits visits (see details in the drawing XG11 visits door-0000-002_Pipeline Standard Manhole-RB). Also according to reports from the geological conditions, soil surface layer shows that subsidence is large, empty large natural number system, modularity of the small distortions. So transpose along the tube at the visit will not affect the texture at the location of the visit.a few
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