US1481244A - Cribbing - Google Patents

Description

`Patenteefl dan. l5, i924.

UNEF-E@ ,STAT

JOHN S. HUNTOON, OF DETROIT, MICHIGAN, ASSIGNOR TO MASSEY CONCRETE PROD- .UCTS CORPORATION, OF CHICAGO, ILLINOIS, A CORPORATION F VIRGINIA. Y

CRIBBING.

Application. mea may 27, 19252. serial No. 564,082.

' new and useful Improvements in Cribbing,

of which the following is a full, clear, concise, and exact description, reference being such as used in connection with fills and emv had to' the accompanying drawings, forming a part of this specification.

This invention relates to improved cribbing for use in constructing retain-ing walls bankments of railways. y

The cribbing of the present invention consists of few dissimilar parts and may be manufactured at a central point and transported to the position where the retaining wall is -to b e constructed, and the construction of the retaining wall may be accomplished by a minimum number of relatively unskilled workmen.

In the embodiment of the invention disclosed in the present application, but two 'different types of strips or slabs are employed, all of the headers or anchor slabs be- -ing alike, and all Aof the stretchers or facer slabs being alike.- In the vconstruction of the retaining wall, the headers are arranged in substantially` parallel tiers at right angles tothe longitudinal axis 0f the wall, and the stretchers are arranged in tiers at substantially right angles to vthe headers, a tier vof stretchers being rovided adjacent. to each end of the hea`ers. In constructing the retaining wall, the strips or slabs are placed one upon another as a rail fence or pen, having but a single rail on a side, would beconstructed. In other words,.,the head-- ers will be supported .upon the stretchers, one at each end, and the stretchers in turn will be supported upon the ends of the headers. rIhis arrangement permits the retaining wall to be constructed `by -a minimum number of men-in fact, thewall may be constructed by one man if the individual slabs are of a size to be readily handled by one man.

In the drawings, Figure 1 is a face view of a portion of a wall with the ends of certain of the headers being broken away to show the abutting relation of the stretchers;

Figure 2 is la vertical section through a each end of the headers 10.

wall adjacent to one of the tiers of headers;

.Figure 3 is a side view of dividual header slabs;

Figure 4 is a section substantially 'on the hne 4`4: of Figure 3;

Figure 5 is a section substantially on the line 5 5 of Figure 4;

Figure 6 is a sectional view of one of the stretcher strips showing the location of the reinforcing rods` therein, vand Figure 7 is a section on the -line 7 7 of Figure 6.

Referring now to the drawings, in which like reference characters indicate like parts 1n `the several views', l0 indicates a header and 11 a stretcher. The headers 10-10 are arrangedin substantially vertically extend- .ing tiers parallel to eachv other, and the stretchers 1 1-11 are arranged in tiers, there being one tier of the stretchers adjacent to The headers l0 are formed at each end with oppositely 'disposed ianges l2, so that the extremity of the header isI substantially T-shaped. Extending .throughout the length of the header 10 is a plurality of reinforcing rods 13, one of the rods 13 being positioned adjacent to each corner of the header. It should be noted that the stretchers and headers will preferably be formed of concrete, 0r similar material, asis usual in structures of this character. The rods 13 adjacent to the ends of the header will be one of the inv extended at right angles and into the flanges l2. This structure is clearly disclosed in Figure 4 of the drawings; The stretcher slabs 11 are similarly reinforced, each having a plurality of rods 14 imbedded vtherein and extending longitudinally thereof. Theserods, as shown in Figure 7, are positioned, one adjacent to each corner of the slab, and the ends thereof are turned at right angles, as shown in Figure 6, so that the reinforcing rods may be anchored at their ends within the stretcher slab.

In constructing the retain-ing wall, the headers l0 are disposed with the iiangeslz? extending in a vvertical direction, and an end of one of the stretcher slabs ll is disposed between each one of the headers l0 and the next adjacent one.

Referring now to Figure 2, it will be noted thatJ beginning at the bottom, the stretcher slabs 11 are disposed below the 'ing header bar.

SEB

lowermost header bar 10. rl`hese will preferably be so arranged that the o-ne at the right is slightly lower than the two at the left so that the face of the wall will be slightly rearwardly inclined. The lowermost header bar is positioned upon the lowermost stretchers 11 with the flanges 12 thereof projecting downwardly. immediately ad'acent to the outer edges of the stretcher sla s. A pluralityv of header bars 10 is arranged in substantially the same plane and spacedapart horizontally ,distances suhstantia-lly equal to the lengtn of the stretcher slabs 11. placed upon the header bars, one at each end immediately adjacent to the inner sides of the flanges 12. Except atthe ends of the wall, the slabs 11v are arranged with their adjacent ends abutting substantially over the central longitudinal axis of the support Another course of headers 10 will then be placed upon the stretchers 11. This process of placingl the headers 10 on the stretchers '11, and then a course of stretchers l11 on the headers 10, will be repeated until the desired height of wall is obtained.

Where the retaining wall is of considerable height, say over ten or twelve feet, a secondary or supplemental courselof headers and another course of stretchers may be added, as indicated at the right in Figure 2.

The headers of the'rear course will preferably be arranged immediately adjacent to the headers of the forward course with the ends sufficiently overlapping so that the stretchers 11 at the rear of the first course of headers may be positioned between the flanges 12 at the rear ends ofthe headers of the rst course and the flanges 12 at the forward ends of the headers of the second course. The rear ends of the headers of the Second course alternate with stretchers, as clearly shown in Figure 2.

In case an exceptionally high retaining wall is to be constructed, it may be desirable to provide a third or even a fourth n course of the headers, each of which will bear the same relation to the preceding course as the course at the right in Figure 2 bears to the course at the left. It is to be understood, of course,.that each succeeding supplemental course ofheaders will usually be of less height than the preceding course. The supplemental courses of headers and the stretchers associated therewith act to anchor the forward course and preventthe pressure of the dirt or other substance'baclr of the wall from forcing the wall out of position.

lt is, of course, to be understood that after the retaining wall has been built, the spaces in and about the headers and stretchers will be filled with dirt or other substance, as is usual with arrangements of this character.

The fact that the stretchers are positioned The stretcher slabs 11 are then The interlocking relation of the forward ends' of the header bars of the rear course with the forward face of the adjacent stretcher slabs firmly anchors the rear course to the forward course. lWith the present ar rangement, it is obvious that the greater the weight brought to bear on the several slabs.

forming the retaining wall, the more firmly they become locked together.

While in the drawings and in the preceding description, the disclosure has been limited to certain definite details, it is to be understood that applicant contemplates certain departures from the specific details disclosed and the invention, therefore, is to be limited merely by the scope of the appended claims. 4

Having thus described my invention, what I claimv as new and desire to secure by Letters Patent of the United States is:

1. A retaining wall having a'vertical tier of stretchers of constant rectangular cross section throughout, a vertical tier of headers alternating with the stretchers and disposed at right anglesthereto and providedrwith T heads lapping and projecting beyond the respective adjacent upper and lower stretchers at one side of the tier of-'stretchers, and a second vertical tier of headers parallel with the first tier of headers and in the same respective horizontal planes therewith and projecting at the opposite side of the tier of stretchers, each of lsaid second headers having an end portion lying between successive stretchers and provided with a T head lapping and projectin beyond said successive stretchers at the si( e of the tier opi .posite the heads of the first mentioned headers. 1

2. A retaining wall comprising two vertical parallel tiers of substantially horizontal headers, the adjacent heads of the two tiers being overlapped horizontally, the overlapped ends having T heads, and a vertical tier of substantially horizontal stretchers of constant rectangular section throughout alternating with the headers and disposed at substantially right angles thereto and lving between and engaged by the T heads of the respective adjacent upper and lower headers and projecting beyond said stretchers.

3. A retaining wall comprising two spaced vertical tiers of substantially horizontal and parallel stretehers of constant rectangular cross section throughout, a vertical tier of headers alternating with the stretchers and extending across and between the same at substantially right angles thereto, each header being provided lat each end with a T head lapping and projecting beyondlthe adjacent upper and lower stretchers atthe outer sides thereof, a third vertical tier of stretchers'in parallelism with the first mentioned tier of stretchers, and a second vertical tierof headers parallel with the first' mentioned headers and extending transversely between the successive members of the third tier, of stretchers and also one of the first mentioned tier of stretchers, each of said headers having a T head at each end thereof lapping and projecting beyond'the adjacent upper and lower stretehers, the heads at the outer ends of said headers lying at the outer side of the thirdtier of stretchers, an'd theheads at the other ends of the said headers lying at the inner sides of the adjacent tier of stretchers.

4. In a retaining wall, spaced parallel .stretchers of constant cross section throughout, a header lying upon the stretchers transversely thereof and provided at each end with a vertically ldisposed T head having -of the headers, and similarly engaged.

In witness whereof, I hereunto ysubscribe my name this 19th day of May, 1922.

JOHN s. HUNTooN.

Witnesses: A

D. A. HULTGRUS, STUART WHITE.

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