Blaw-Knox Company (Pittsburgh, Pa.) · Blaw-Knox Co. · leaf 19
asily attached and positive in insuring good verticalalignment of the panels. An extra horizontal liner isattached to any one of the courses (the top course inFig. 21) to give a bearing for the vertical liners.This extra horizontal liner is attached by linerties to the middle angles of the panels… … Twenty BLAWFORMS FOR LIGHT WALLS AND FOUNDATIONS one key to every twelve square feet of form, the labor of placing thesebeing almost negligible. Assembled in this way, with a No. 12 tie wire in every place pro-vided, the form is strong enough to be filled with wet concrete for aheight of eight feet…
Building materials · Concrete · Formwork
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