▁movement ▁of ▁the ▁connected ▁parts . ▁ ▁They ▁can ▁be ▁found ▁in ▁ax ial - load ▁bearing ▁walls , ▁cur tain ▁walls , ▁tr uss es , ▁roof s , ▁and ▁flo ors . ▁Mov ement - Allow ing ▁connections ▁are ▁designed ▁to ▁allow ▁def lection ▁of ▁the ▁primary ▁structure ▁in ▁the ▁vertical ▁direction ▁due ▁to ▁live ▁load , ▁or ▁in ▁the ▁horizontal ▁direction ▁due ▁to ▁wind ▁or ▁se ism ic ▁loads , ▁or ▁both ▁vertical ▁and ▁horizontal ▁directions . ▁ ▁One ▁application ▁for ▁a ▁vertical ▁movement - allow ing ▁connection ▁is ▁to ▁isol ate ▁non - ax ial ▁load ▁bearing ▁walls ▁( d ry wall ) ▁from ▁the ▁vertical ▁live ▁load ▁of ▁the ▁structure ▁and ▁to ▁prevent ▁damage ▁to ▁finish es . ▁A ▁common ▁clip ▁for ▁this ▁application ▁is ▁an ▁L - sh aped ▁top - of - wall ▁clip ▁for ▁walls ▁that ▁are ▁inf ill ▁between ▁flo ors . ▁These ▁cli ps ▁have ▁sl ots ▁per pend icular ▁to ▁the ▁b end ▁in ▁the ▁clip . ▁ ▁Another ▁common ▁clip ▁is ▁the ▁by pass ▁clip ▁for ▁walls ▁that ▁by pass ▁outside ▁the ▁edge ▁of ▁the ▁floor ▁structure . ▁When ▁these ▁cli ps ▁are ▁L - sh aped , ▁they ▁have ▁sl ots ▁that ▁are ▁parallel ▁to ▁the ▁b end ▁in ▁the ▁clip . ▁If ▁the ▁structure ▁is ▁in ▁an ▁active ▁se ism ic ▁zone , ▁vertical ▁and ▁horizontal ▁movement - allow ing ▁connections ▁may ▁be ▁used ▁to ▁accommod ate ▁both ▁the ▁vertical ▁def lection ▁and ▁horizontal ▁dr ift ▁of ▁the ▁structure