US2159556A - Cribbing construction - Google Patents

Description

May 23, 1939. c HAB|CHT 2,159,556

CRIBBING CONSTRUCTION Filed July 6, 1937 Ivu-nim; E o d Patented May 23, 1939 UNITED STATES PATENT OFFICE 3 Claims.

This invention relates to certain new and useful improvements in cribbing for use in retaining wall, jetty and revetment construction.

One of its objects is to provide a reinforced concrete cribbing construction which is so designed as to provide for a distribution of the sustaining wall pressure in a longitudinal as well as a lateral direction, to thereby effectively reduce the lateral pressure to a minimum and at the same time afford for greater stability and safety of construction.

, Another object of the invention is to provide a cribbing structure which is simple, effective and economical in construction, and which can be readily installed.

Other features of the invention reside in the construction and arrangement of parts herein- III, II indicate the front and rear foundation blocks or base members, respectively, on which the cribbing structure is mounted and which may be made of concrete or other suitable construction. These foundation blocks are disposed at predetermined distances apart depending upon the size and use to which the cribbing is to be put.

The cribbing structure is preferably designed to provide a series of connected, equilateral-triangle-shaped units or truss members, with the front and rear faces or retaining walls thereof consisting of longitudinal beams or stretchers I2 and I3, respectively, arranged in superposed rela tion in parallel courses with intervening vertical spaces between them. The lowermost course of front stretchers is supported on the foundation blocks Ill and the several stretchers are anchored against lateral and longitudinal displacement by upright pins or posts I4 rising from the foundation blocks and extending through openings I5 formed adjacent the ends of the stretchers. Extending transversely and diagonally between the front and rear walls of the cribbing formed by the stretchers and in alternate planes relative thereto and constituting the spacing elements between superposed stretchers are ties or headers I6 which are disposed in criss-cross or intersecting fashion in the manner shown in Figures 1 and 3 to severally provide a plurality of adjoining equilateral-triangle-shaped truss members which effectively brace the cribbing in both lateral and longitudinal directions. At their opposite ends these headers preferably terminate in enlargements I'I having openings I8 therein through which the anchoring pins I4 extend to hold the headers in a fixed position. The lowermost set of headers, as shown in Figures 2 and 3, are supported at their front ends on the lower course of stretchers I2 while their rear ends are supported directly upon the foundation blocks I I with the lowermost course of the rear stretchers I3 supported on the enlargements of such headers. As shown in Figure 3, the stretchers abut one another substantially centrally of the headerenlargements I 1 whereby they are effectively supported with the enlargements forming uniform spacing elements between the stretcher-courses.

By preference the stretchers and headers are made of reinforced concrete and after the cribhing is completed the resulting spaces between its component parts are filled in with earth, stone, cinders or the like. This cribbing is particularly adapted for use in jetty and revetment construction.

If desired, the rear row of stretchers I3 may be eliminated and blocks of concrete or like material, similar to the base blocks II, placed at the intersecting points of the diagonal tie members I6, it being preferable in this case to use the stretchers at the top and bottom of the cribbing. For purposes of economy, the bays or openings formed between the front wall I2 of the cribbing and the tie members I6 may be filled with stone or rock-fill, while the remaining bays may be filled with dirt, so that the pressure from the rear of the cribbing is distributed both laterally and longitudinally against the stone-filled bays.

I claim as my invention:

1. A cribbing construction, comprising a front retaining wall composed of stretcher members, and diagonally-disposed header members arranged rearwardly of and in intersecting connected relation with said stretcher members to provide equilateral, triangular-shaped bays for receiving fill, the line of pressure being normal to the header-forming sides of the bays and in both longitudinal and lateral directions relative to the cribbing.

2. A cribbing construction, comprising a series of interconnected equilateral-trian-gie-shaped units consisting of longitudinal stretchers forming a retaining Wall and diagonal tie members extending rearwardly therefrom to provide likeshaped triangular bays for receiving fill, and means for connecting said stretchers and said tie members at their respective intersecting points.

3. A cribbing construction, comprising a series of superposed alternately arranged stretcher and header members, the stretcher members being disposed in front and rear longitudinal several members against relative displacement.

GEORGE C. HABICHT.

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