US1962830A - Steel sheet piling of z-shaped sheet piling iron - Google Patents

Description

June 12, 1934. M, METZLER 1,962,830

STEEL SHEET FILING OF Z-SHAPED SHEET FILING IRON Filed May 14, 1931 /n venfor:

Patented June 12, 1934 STEEL SHEET PILING F Z-SHAPED SHEET PILING IRON Martin Metzler, Dortmund-Gartenstadt,

Ger-

many, assignor to the firm Vereinigte Stahlwerke Aktiengesellschaft, Dusseldorf, Germany Application May 14, 1931, Serial No. 537,465

In Germany 1 Claim.

The invention relates to an improvement in steel sheet pilings.

The steel sheet pilings of U and Z-shaped sheet piling iron as they are known to-day, employ webs which are positioned in an obtuse or acute angle or vertically to the flanges limiting them in the width. Using that method only an incomplete static utilization of the cross section is attained, because the flanges add the greatest part to the moment of resistance.

According to the invention sheet piling irons consisting of outer web or flange like portions and connecting webs, such as Z-irons, are used in which the outer web like portions extending substantially parallel to the plane of the piling are prolonged at both sides of the axis of the piling to a desired extent beyond the connecting webs which extend substantially vertically to the axis of the piling. Due to this elongation of the outer web portion a more efiicient utilization of the material is obtained. It may be remarked that by characterizing the outer web like portions as extending substantially parallel to the plane of the piling and the connecting webs as extending substantially vertically to the axis of the piling, it is not intended to strictly define the invention to this position but thereby only the approximate position of said parts shall be referred to for the purpose of making clear the spirit of my invention.

The invention is more clearly described by way of example in the accompanying drawing, the figure of which shows a cross-section of a sheet May 15, 1930 piling which is formed of Z-shaped sheet irons which are constructed according to the invention.

In the figure the single Z-shaped irons which are connected by means of interlocking joints d consist of the outer webs or flanges a which are parallel to the plane or axis of the wall, and the connecting webs b which lie vertically to the axis of the piling. The outer webs a are elongated beyond the connecting webs I) over a length 0 which may be as desired and depends only on the static requirements. For example the elongated parts of the adjacent sheet irons may touch in extreme cases. However, it is an important fact that in the latter case the elongations or protruding parts are not provided with interlocking joints. It is not necessary that the protruding webs or flanges of a sheet piling iron are symmetrical. The sheet piling iron may be rolled out of one piece or set together in any desired manner as for instance by welding. There may also be used any well known interlocking joints and the connections may be produced by means of intermediate parts.

What I claim and desire to secure by Letters Patent of the United States is:

Corrugated sheet piling composed of rectangular Z-irons connected by interlocking joints, the webs thereof extending parallel to the plane of the piling being prolonged at both sidesof the axis of the piling beyond the webs extending vertically thereto.

MARTIN METZLER.

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