the model uzytkowy concerns the construction podciagu mining znajdujacego application in strengthening the odrzwi housing lukowej in mining excavation.podciag (1) is made as prostka profile korytkowym and wyposazona is made in the bottom (5) profile korytkowego przelotowe openingsas for make way for zerdzi kotwi mocujacej this podciag (1) to earth.podciag (1) on its long is introduced and fixed permanently in the profile korytkowym elements supporting tissues, in form of okraglej pipes (2 '),reasonably wypuklego up piece coat buttoned okraglej pipes, which wierzcholek (9) projection plaszczyzne (p) laczaca upper krawedzie (10) arm (7) korytkowego profile.
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