US888135A - Metal sheet-piling. - Google Patents

Description

PATENTED MAY 19, 1908.

R; B. WOODWORTH, METAL SHEET PILING.

APPLICATION IILBD DBGA, 1907.

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ROBERT B. WOODWORTH, OF PITTSBURG, PENNSYLVANIA.

ME TAL SHEE T-PILING.

Application filed. December 4;,

Specification of Letters Patent.

Patented May 19, 1908.

1907. Serial No. 405,036.

To all whom it may concern:

Be it known that I, ROBERT B. Wool)- WORTH, of Pittsburg, Allegheny county, and State of Pennsylvania, have invented a new and useful Improvement in Metal Sheet-Pd ing, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, forming part of this specification, in which- Figure 1 is a plan view showing a series of channel-beams constructed in accordance with my invention, as they are assembled in forming the sheet piling; Fig. 2 is a side elevation of the same showing the interlocking members of the piling in place upon the channel-beams employed in constructing the piling; Fig. 3 is a detail perspective view showing a single beam member provided with interlocking means in accordance with my invention.

The invention relates to metal sheet piling employed in constructing retaining walls for excavations, foundations, piers and in forming caissons, bulkheads, docks, wharves and similar structures used in submarine work, and it particularly relates to metal sheet piling which is built up from rolled structural shapes.

In interlocking sheet piling fabricatedfrom rolled metal shapes, there is considerable clearance necessarily present between the interlocking edges of the adjacent members in order to overcome irregularities in shopwork and to revent sticking or undue friction when driving the piles. Where the interlock is formed on each edge of alternate sections of piling, the alternate sections are of different cross sections, and the compressive strength of all sections is not-uniform. With sheet piling in which the interlocking members are formed on one horizontal edge of each section, the piling is not held in perfect alinement, and the blows of the hammer employed in driving the iles is uniformly distributed over the pile and is frequently the cause of crippling or buckling of the pile being driven which necessitates the withdrawal of the pile being driven together with the adjoining driven pile with which it is interlocked.

The object of my invention is to provide an im roved metal sheet piling formed from rol ed metal shapes in such manner that the above mentioned disadvantages are overcome and the dilliculties experienced in driving such piling are very largely overcome and prevented.

The invention consists in providing a metal sheet piling in which the separate members are of uniform weight and of symmetrical cross section, and in which improved interlocking means are provided by which the piling is better kept in alinement and by which the blow of the pile-driving hammer is equally and uniformly distributed to both sides of the sections of piling.

In the drawings, 2 represents the channelbeams forming the piling, the flanges on these beams being turned in opposite directions on alternate sections and theflanged edges of adjoining sections overlapping, as is shown in Fig. 1. One longitudinal edge of each section 2 is provided with a Zbar 3, which forms the interlock, this Z-bar extending substantially the whole length of the channel-beam. On the opposite edge of said channel section is a shorter Z-bar 4, forming a supplemental interlock by which the alinement of the piling structure is better maintained. The Z-bars 4 are comparatively short, and are preferably secured to the upper ends of each section with the end of the Z-bar flush with the end of the channelbeani, so as to receive and transmit the blow of the pile driver hammer to the one edge of the channel-beam and cause the impact of the hammer to be uniformly distributed.

Each section 2 of the j'iiling is provided with open holes 5 which are employed in withdrawing the piling after being driven when such piling is removed from the ground.

It will be noted that the short interlocking member 4 and the long interlocking member 3 are on opposite edges of the sections on alternate channel sections, so as to make alternate members left hand and right hand.

In driving the separate sections forming the sheet piling, the first channel-beam is driven into the ground until it has reached the desired depth. The second section, which is right or left hand, as is required, is

then placed in position to be driven, the Z-bars forming the interlock holding the channels in line. As the hammer of the pile driver strikes the top of the pile being driven, the impact is distributed equally over the entire section of the beam, the short Z-bar receiving its part of the blows and transmitting it to the edge of the beam on Which the Z-bar 4 is secured.

The above described operation is repeated With successive piling sections, until the de sired amount of sheeting has been formed. The piling may be driven so as to form a single Wall or in such manner as Will form a rectangular or circular inclosure as is desired, suitable corner connections being provided Where it is necessary to have a right angled turn in the inclosure.

The advantages of my invention Will be appreciated by those skilled in the art. By the use of a single 'Z-bar on each channelbeam Which extends its full length, the sections of the piling are of equal strength, While the compressive strength of each beam section is increased and liability of bending or buckling in driving is greatly lessened and overcome. The short sections of Z-bar assist in keeping the piling in alinement, While by making the top edges of the Z-bar flush With the channel-beams, the impact of the driving hammer is equally distributed over the channel-beam sections.

Variations in the arrangement and location of the parts may be made Without departing from my invention.

I claim:

1. In a sheet metal piling, a piling section of channel form having at one edge a Z-bar secured thereto and extending substantially the full length of the section and at its opposite edge a relatively short Z-bar, substantially as described.

2. In a sheet metal piling, a piling section of channel form having at one edge a Z-bar secured thereto and extending substantially the full length of the section and at its opposite edge a relatively short Z-bar, one end of the short Z-bar being flush With the top of the piling section, substantially as described.

3. Metal sheet piling composed of a series of channel-beams disposed alternately and interlocked along their flanged edges and beams having single Z-bars forming a continuous interlocking member and short Z-bars holding the channel-beams in regular alinernent, substantially as described.

4. Metal sheet piling having a series of alternately disposed channel-beams With overlapping flanged edges, an interlocking Z-bar secured to one edge of the beams and extending substantially the full length of the channel-beams, and a supplemental interlocking Z-bar on the opposite edge of the beam section, said supplemental 2-bar extending for a part of the length of the beam sections, substantially as described.

5. Metal sheet piling having a series of alternately disposed channel beams With overlapping flanged edges, an interlocking Zbar secured to one edge of the beams and extending substantially the full length of the channel-beams, and a supplemental interlocking Z-bar on the opposite edge of the beam sections, said supplemental Z-bar extending for a part of the length of the beam sections, and having its top end flush with the top of the channel beams, substantially as described.

In testimony whereof, I have hereunto set my hand.

ROBERT B. NOODWVORTH. W'itnesses:

GEO. W. RITOHEY, WM. BREEDEN.

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