CA2249889A1 - Retaining wall blocks - Google Patents
Retaining wall blocks Download PDFInfo
- Publication number
- CA2249889A1 CA2249889A1 CA 2249889 CA2249889A CA2249889A1 CA 2249889 A1 CA2249889 A1 CA 2249889A1 CA 2249889 CA2249889 CA 2249889 CA 2249889 A CA2249889 A CA 2249889A CA 2249889 A1 CA2249889 A1 CA 2249889A1
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- Canada
- Prior art keywords
- blocks
- block
- course
- geogrid
- retaining wall
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/02—Retaining or protecting walls
- E02D29/0225—Retaining or protecting walls comprising retention means in the backfill
- E02D29/0241—Retaining or protecting walls comprising retention means in the backfill the retention means being reinforced earth elements
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2200/00—Geometrical or physical properties
- E02D2200/16—Shapes
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2300/00—Materials
- E02D2300/0004—Synthetics
- E02D2300/0018—Cement used as binder
- E02D2300/002—Concrete
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- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Retaining Walls (AREA)
Abstract
A retaining wall block adapted for attachment to a geogrid sheet has an upper side with a first portion adjacent to the front side of the block and a second portion adjacent to the rear side of the block at a lower height. A row of projections on the second portion is adapted for engagement in apertures of a geogrid sheet. The top of the projections is at the same height as the first portion of the upper side of the block so that a block in an upper course is supported by both the first portion of the upper side and the projections on the lower block. The block may include an aperture adapted for receiving a fence post. The block may include removable pins, rather than projections that are integral with the blocks, to engage the geogrid.
Description
RETAINING WALL BLOCKS
Technical Field The present invention pertains to retaining wall blocks and, in particular, blocks for use with geogrid.
Back rg o In retaining wall systems for supporting embankments, terraces and the like, it is known to use geogrid materials to reinforce the soil mass supported by the wall. Geogrid typically takes the form of textile netting or extruded sheets of plastic material having a grid-like pattern of apertures. As a retaining wall is built and soil is filled behind it, geogrid is laid on the soil, usually horizontally, extending back from the blocks. It is commonly laid at several levels as the wall is con-structed.
It is known to provide attachment means, such as pins, on retaining wall blocks for attachment of the geogrid to the wall. See, for example, U.S. Patent No. 4,914,876 Forsberg.
In some prior art blocks, the pins that are used to anchor the geogrid extend into bores in the blocks of an adjacent course of blocks and thus also save the function of anchoring adjacent courses of blocks together. The pins in such systems are accordingly subject to the forces from both the adjacent blocks and from the geogrid, and are prone to breakage.
In some prior art retaining wall systems, the geogrid fits over the rearward portion, but not the forward portion, of the blocks in a course such that when a further course is laid on such course, the rearward portion of the blocks in the upper course is spaced from the blocks in the lower course by the thickness of the geogrid, while the forward portion of the blocks is not so spaced, causing an inclination of the blocks in the upper course. Such inclination, repeated for each layer of geogrid used in the construction of the wall, can result in the blocks of upper courses having a significant and undesirable tilt from the horizontal. The geogrid can also be abraded between the layers of blocks as the wall settles differentially, causing breakage of the geogrid that detaches it from the wall.
There is accordingly a need to provide a retaining wall block which permits anchoring of geogrid but which avoids the aforesaid drawbacks .
Summay of Invention According to the present invention, there is provided a retaining wall block comprising a body having a front side for forming a portion of an exterior surface of a retaining wall, a back side, upper and lower sides and left and right sides, the upper side of the block having a first portion adjacent to the front side at a first height above the bottom side, and a second portion adjacent to the back side at a second height above the bottom side, the second height being lower than the first height; and a plurality of projections on the second portion of the upper side adapted for engagement in apertures of a geogrid sheet, the projections having a height greater than the thickness of the geogrid sheet, the tops of the projections being at a height equal to the height of the first portion of the upper side of the block. The block also has mating engagement means on the upper and lower sides for engaging the block with blocks in vertically adjacent courses.
Preferably, the engaging means are male engaging means on the upper side of the block comprising two posts and female engaging means on the lower side of the block comprising a slot for receiving one such post from each of two adjacent blocks.
The block preferably includes a groove in the upper side of the block for receiving an edge of a geogrid sheet. In one embodiment of the invention, the block also includes an aperture in the upper side adapted to receive a fence post, so that a fence can conveniently be constructed along the top course of blocks.
The invention also provides a retaining wall system comprising blocks as aforesaid and a geogrid sheet affixed thereto. The wall system comprises a first course of blocks, a geogrid sheet extending rearwardly from the first course such that the projections on the second portion of the upper side of the blocks in the first course extend through apertures along an edge of the geogrid sheet; and a second course of blocks positioned on top of the first course, the lower side of the blocks in the second course being supported by the first portion of the upper side and the projections of the blocks in the first course, and the female engaging means on the lower side of the blocks in the upper course engaging with the male engaging means in the upper side of the blocks in the lower course.
Technical Field The present invention pertains to retaining wall blocks and, in particular, blocks for use with geogrid.
Back rg o In retaining wall systems for supporting embankments, terraces and the like, it is known to use geogrid materials to reinforce the soil mass supported by the wall. Geogrid typically takes the form of textile netting or extruded sheets of plastic material having a grid-like pattern of apertures. As a retaining wall is built and soil is filled behind it, geogrid is laid on the soil, usually horizontally, extending back from the blocks. It is commonly laid at several levels as the wall is con-structed.
It is known to provide attachment means, such as pins, on retaining wall blocks for attachment of the geogrid to the wall. See, for example, U.S. Patent No. 4,914,876 Forsberg.
In some prior art blocks, the pins that are used to anchor the geogrid extend into bores in the blocks of an adjacent course of blocks and thus also save the function of anchoring adjacent courses of blocks together. The pins in such systems are accordingly subject to the forces from both the adjacent blocks and from the geogrid, and are prone to breakage.
In some prior art retaining wall systems, the geogrid fits over the rearward portion, but not the forward portion, of the blocks in a course such that when a further course is laid on such course, the rearward portion of the blocks in the upper course is spaced from the blocks in the lower course by the thickness of the geogrid, while the forward portion of the blocks is not so spaced, causing an inclination of the blocks in the upper course. Such inclination, repeated for each layer of geogrid used in the construction of the wall, can result in the blocks of upper courses having a significant and undesirable tilt from the horizontal. The geogrid can also be abraded between the layers of blocks as the wall settles differentially, causing breakage of the geogrid that detaches it from the wall.
There is accordingly a need to provide a retaining wall block which permits anchoring of geogrid but which avoids the aforesaid drawbacks .
Summay of Invention According to the present invention, there is provided a retaining wall block comprising a body having a front side for forming a portion of an exterior surface of a retaining wall, a back side, upper and lower sides and left and right sides, the upper side of the block having a first portion adjacent to the front side at a first height above the bottom side, and a second portion adjacent to the back side at a second height above the bottom side, the second height being lower than the first height; and a plurality of projections on the second portion of the upper side adapted for engagement in apertures of a geogrid sheet, the projections having a height greater than the thickness of the geogrid sheet, the tops of the projections being at a height equal to the height of the first portion of the upper side of the block. The block also has mating engagement means on the upper and lower sides for engaging the block with blocks in vertically adjacent courses.
Preferably, the engaging means are male engaging means on the upper side of the block comprising two posts and female engaging means on the lower side of the block comprising a slot for receiving one such post from each of two adjacent blocks.
The block preferably includes a groove in the upper side of the block for receiving an edge of a geogrid sheet. In one embodiment of the invention, the block also includes an aperture in the upper side adapted to receive a fence post, so that a fence can conveniently be constructed along the top course of blocks.
The invention also provides a retaining wall system comprising blocks as aforesaid and a geogrid sheet affixed thereto. The wall system comprises a first course of blocks, a geogrid sheet extending rearwardly from the first course such that the projections on the second portion of the upper side of the blocks in the first course extend through apertures along an edge of the geogrid sheet; and a second course of blocks positioned on top of the first course, the lower side of the blocks in the second course being supported by the first portion of the upper side and the projections of the blocks in the first course, and the female engaging means on the lower side of the blocks in the upper course engaging with the male engaging means in the upper side of the blocks in the lower course.
The invention also provides a retaining wall block compris-ing a body having a front side for forming a portion of an exterior surface of a retaining wall, a back side, upper and lower sides, and left and right sides; said upper side of said block having a first portion adjacent to said front side at a first height above said bottom side, and a second portion adjacent to said back side at a second height above said bottom side, said second height being lower than said first height, said second portion having a plurality of bores therein adapted to receive geogrid-engaging pins; a plurality of pins adapted to be received in said bores for engagement in apertures of a geogrid sheet, each of said pins having a lower part which extends into said aperture and an upper part which extends upward from said second portion of said upper side of said block, said upper part having a height greater than the thickness of said geogrid sheet, the top of said pin when said pin is in position in an aperture being at a height above the bottom side of said block equal to said first height. The block also has mating engagement means on the upper and lower sides for engaging the block with blocks in vertically adjacent courses.
Brief Description of Drawings Fig. 1 is a perspective view of a block according to a first embodiment of the invention;
Fig. 2 is a right side elevation view thereof, the left side elevation view being a mirror image thereof;
Fig. 3 is a top plan view thereof;
Brief Description of Drawings Fig. 1 is a perspective view of a block according to a first embodiment of the invention;
Fig. 2 is a right side elevation view thereof, the left side elevation view being a mirror image thereof;
Fig. 3 is a top plan view thereof;
Fig. 4 is a bottom plan view thereof;
Fig. 5 is a perspective view of a retaining wall according to the invention.
Fig. 6 is a right side elevation view of two courses of blocks with a sheet of geogrid attached therebetween;
Fig. 7 is a perspective view of a block according to a second embodiment of the invention;
Fig. 8 is a top plan view of the block of Fig. 7;
Fig. 9 is a bottom plan view of the block of Fig. 7;
Fig. 10 is a perspective view of a block according to a third embodiment of the invention;
Fig. 11 is a right side elevation view of the block of Fig. 10, the left side elevation view being a mirror image thereof; and Fig. 12(a), (b) and (c) are perspective views of geogrid-retaining pins for use in the third embodiment of the invention.
Description The retaining wall block according to the invention is preferably a molded block made of concrete or other composite materials.
Fig. 5 is a perspective view of a retaining wall according to the invention.
Fig. 6 is a right side elevation view of two courses of blocks with a sheet of geogrid attached therebetween;
Fig. 7 is a perspective view of a block according to a second embodiment of the invention;
Fig. 8 is a top plan view of the block of Fig. 7;
Fig. 9 is a bottom plan view of the block of Fig. 7;
Fig. 10 is a perspective view of a block according to a third embodiment of the invention;
Fig. 11 is a right side elevation view of the block of Fig. 10, the left side elevation view being a mirror image thereof; and Fig. 12(a), (b) and (c) are perspective views of geogrid-retaining pins for use in the third embodiment of the invention.
Description The retaining wall block according to the invention is preferably a molded block made of concrete or other composite materials.
Referring to Figs. 1 - 4, the retaining wall block 10 is a six-sided block having a front face or side 12, a rear side 14, an upper side 16, a lower side 18 and right and left sides 20, 22. When the blocks are assembled into a wall, the front side 12 of a block forms a portion of the face of the retaining wall. The upper side 16 has a first portion 24 adjacent the front of the block and a second portion 26 adjacent the rear of the block. Two posts 28 are positioned on the first portion 24 of the upper side, one adjacent each of the left and right sides of the blocks. Receiving slot 30 extends vertically through the block between its upper and lower sides, approximately between posts 28 and slightly nearer to the front side of the block. It is elongated in shape, in plan view. The posts 28 and slot 30 form male and female engaging means respectively for engagement of blocks in adjacent courses, as described below.
A plurality of projections 32 are positioned along the second portion 26 of the upper side 16 of the block in a row adjacent the rear side of the block. As shown in Fig. 2, the height H2 of the second portion 26 is less than the height H1 of the first portion of the upper side.
The height H3 of the projections 32 above the second portion is such that H2 + H3 = H1, i.e. the top surface of the projections 32 is at the same height as the first portion 24 of the upper side 16 of the block.
Block 10 preferably has bore 34 extending vertically therethrough in order to reduce the weight of the block.
The right and left sides 20, 22 preferably slope inwards in the rearward direction, giving the block a trapezoidal shape. This feature, plus the elongated shape of receiving slot 30, allows curved walls to be constructed while maintaining a close vertical fit between the faces of adjacent blocks.
Referring to Fig. 5, a geogrid sheet 38 is a perforated structure with a plurality of rows of apertures 40. After one or more courses of blocks 10 are laid, and the earth is filled in back of them, the geogrid sheet 38 is attached to the upper course by placing the row of holes 40 that is adjacent an edge of the geogrid sheet over projections 32 of the blocks. The next course of blocks is then laid atop this course, in a conventional staggered arrangement, with each block in the upper course being supported by two adjacent blocks in the lower course. Posts 28 of the blocks in the lower course engage with the receiving slots 30 of the blocks in the upper course, a slot 30 of each block in an upper course engaging with two posts 28, one from each of two adjacent blocks in the course below. The slot 30 is positioned slightly nearer than the posts 28 to the front side of the block in order to have each successively higher course stepped back slightly from the one below. As seen in Fig.
6, because the height of the first or front portion 24 of the top side of a block is equal to the combined heights of the second portion 26 and the projections 32, the lower side 18 of a block in the upper course rests on the front portion 24 and the projections 32 of the blocks in the lower course. The blocks in the upper course thus prevent the geogrid sheet from slipping off the projections 32. The height of the projections 32 is greater than the thickness of the geogrid, so that the geogrid fits between the courses of blocks without interfering with their fitting together. The edge 42 of the geogrid sheet between courses can be accommodated within groove 36 where necessary, for example where the edge is long or ragged.
A second embodiment of the retaining wall block is shown in Figs. 7 - 9. The block 50 has a generally open construction for purposes of weight reduction. Block 50 functions in essentially the same manner as block 10. It has a pair of posts 128 on the upper side and receiving slot 130 on the lower side, to engage blocks in vertically adjacent courses. The top of projections 132 is at the same height as the first portion 124 of the upper side 116 of the block. The block 50 includes an aperture 52 in its upper side, which is intended to receive a fence post, permitting a fence to be conveniently built on the top course of the retaining wall.
Figs. 10 and 11 show a third embodiment of the invention.
Block 310 has a configuration the same as that of block 10, except that instead of projections 32 of block 10 to engage a sheet of geogrid, block 310 has a series of cylindrical bores along the second portion 326 of the upper side 316 of the block, adapted to receive pins 302 which engage the geogrid. A pin 302 is shown in detail in Fig. 12(a) and is preferably made of nylon or fibreglass. It has an upper portion 303, a shoulder 304 and a lower portion 305 . When placed in a bore 301, the shoulder rests on the surface of the upper portion 326 of the block around the top of the bore 301, with lower portion 305 inside the bore and upper portion 303 projecting upward such that the top of pin 302 is at the same height as the first portion 324 of the upper side 316 of the block. Thus, referring to Fig. 11, where H3 is the height of the top of pin 302 above the surface of second portion 326, H2 is the height of the surface of the second portion 326 and Hl is the height of the first portion 324, H2 + H3 = H1.
In building a retaining wall using blocks 310, pins 302 are placed in bores 301 and a sheet of geogrid is positioned such that the holes along an edge of the sheet are placed over pins 302. When the next course of blocks is laid, the lower side of the blocks in the upper course rest on the front portion 324 of the blocks in the lower course and contact the top of pins 302. The weight of the blocks in the upper course rests on the front portion 324 of the lower blocks, not on pins 302.
Alternate forms of pin are shown in Figs. 12(b) and 12(c).
Referring to Fig. 12(b), pin 402 has a shoulder 404 analogous to shoulder 304 of pin 302, but substantially smaller. Referring to Fig. 12(c) pin 502 has a lower ribbed portion 504 adapted to engage the walls of bore 301 of the block in a press fit.
If desired, the pins can comprise two separate pieces rather than a single component. A pin holder can be provided comprising a shoulder and a cup in which the pin sits, and the pin itself can be a straight cylindrical member.
As will be apparent to those skilled in the art in the light of the foregoing disclosure, many alterations and modifications are possible in the practice of this invention without departing from the spirit or scope thereof. Accordingly, the scope of the invention is to be construed in accordance with the substance defined by the following claims.
A plurality of projections 32 are positioned along the second portion 26 of the upper side 16 of the block in a row adjacent the rear side of the block. As shown in Fig. 2, the height H2 of the second portion 26 is less than the height H1 of the first portion of the upper side.
The height H3 of the projections 32 above the second portion is such that H2 + H3 = H1, i.e. the top surface of the projections 32 is at the same height as the first portion 24 of the upper side 16 of the block.
Block 10 preferably has bore 34 extending vertically therethrough in order to reduce the weight of the block.
The right and left sides 20, 22 preferably slope inwards in the rearward direction, giving the block a trapezoidal shape. This feature, plus the elongated shape of receiving slot 30, allows curved walls to be constructed while maintaining a close vertical fit between the faces of adjacent blocks.
Referring to Fig. 5, a geogrid sheet 38 is a perforated structure with a plurality of rows of apertures 40. After one or more courses of blocks 10 are laid, and the earth is filled in back of them, the geogrid sheet 38 is attached to the upper course by placing the row of holes 40 that is adjacent an edge of the geogrid sheet over projections 32 of the blocks. The next course of blocks is then laid atop this course, in a conventional staggered arrangement, with each block in the upper course being supported by two adjacent blocks in the lower course. Posts 28 of the blocks in the lower course engage with the receiving slots 30 of the blocks in the upper course, a slot 30 of each block in an upper course engaging with two posts 28, one from each of two adjacent blocks in the course below. The slot 30 is positioned slightly nearer than the posts 28 to the front side of the block in order to have each successively higher course stepped back slightly from the one below. As seen in Fig.
6, because the height of the first or front portion 24 of the top side of a block is equal to the combined heights of the second portion 26 and the projections 32, the lower side 18 of a block in the upper course rests on the front portion 24 and the projections 32 of the blocks in the lower course. The blocks in the upper course thus prevent the geogrid sheet from slipping off the projections 32. The height of the projections 32 is greater than the thickness of the geogrid, so that the geogrid fits between the courses of blocks without interfering with their fitting together. The edge 42 of the geogrid sheet between courses can be accommodated within groove 36 where necessary, for example where the edge is long or ragged.
A second embodiment of the retaining wall block is shown in Figs. 7 - 9. The block 50 has a generally open construction for purposes of weight reduction. Block 50 functions in essentially the same manner as block 10. It has a pair of posts 128 on the upper side and receiving slot 130 on the lower side, to engage blocks in vertically adjacent courses. The top of projections 132 is at the same height as the first portion 124 of the upper side 116 of the block. The block 50 includes an aperture 52 in its upper side, which is intended to receive a fence post, permitting a fence to be conveniently built on the top course of the retaining wall.
Figs. 10 and 11 show a third embodiment of the invention.
Block 310 has a configuration the same as that of block 10, except that instead of projections 32 of block 10 to engage a sheet of geogrid, block 310 has a series of cylindrical bores along the second portion 326 of the upper side 316 of the block, adapted to receive pins 302 which engage the geogrid. A pin 302 is shown in detail in Fig. 12(a) and is preferably made of nylon or fibreglass. It has an upper portion 303, a shoulder 304 and a lower portion 305 . When placed in a bore 301, the shoulder rests on the surface of the upper portion 326 of the block around the top of the bore 301, with lower portion 305 inside the bore and upper portion 303 projecting upward such that the top of pin 302 is at the same height as the first portion 324 of the upper side 316 of the block. Thus, referring to Fig. 11, where H3 is the height of the top of pin 302 above the surface of second portion 326, H2 is the height of the surface of the second portion 326 and Hl is the height of the first portion 324, H2 + H3 = H1.
In building a retaining wall using blocks 310, pins 302 are placed in bores 301 and a sheet of geogrid is positioned such that the holes along an edge of the sheet are placed over pins 302. When the next course of blocks is laid, the lower side of the blocks in the upper course rest on the front portion 324 of the blocks in the lower course and contact the top of pins 302. The weight of the blocks in the upper course rests on the front portion 324 of the lower blocks, not on pins 302.
Alternate forms of pin are shown in Figs. 12(b) and 12(c).
Referring to Fig. 12(b), pin 402 has a shoulder 404 analogous to shoulder 304 of pin 302, but substantially smaller. Referring to Fig. 12(c) pin 502 has a lower ribbed portion 504 adapted to engage the walls of bore 301 of the block in a press fit.
If desired, the pins can comprise two separate pieces rather than a single component. A pin holder can be provided comprising a shoulder and a cup in which the pin sits, and the pin itself can be a straight cylindrical member.
As will be apparent to those skilled in the art in the light of the foregoing disclosure, many alterations and modifications are possible in the practice of this invention without departing from the spirit or scope thereof. Accordingly, the scope of the invention is to be construed in accordance with the substance defined by the following claims.
Claims (9)
1. A retaining wall block comprising:
(a) a body having a front side for forming a portion of an exterior surface of a retaining wall, a back side, upper and lower sides, and left and right sides;
(b) said upper side of said block having a first portion adjacent to said front side at a first height above said bottom side, and a second portion adjacent to said back side at a second height above said bottom side, said second height being lower than said first height;
(c) a plurality of projections on said second portion of said upper side adapted for engagement in apertures of a geogrid sheet, said projections having a height greater than the thickness of said geogrid sheet, the top of said projections being at a height above said bottom side of said block equal to said first height; and (d) mating engaging means on said upper and lower sides for engaging said block with other such blocks in vertically adjacent courses.
(a) a body having a front side for forming a portion of an exterior surface of a retaining wall, a back side, upper and lower sides, and left and right sides;
(b) said upper side of said block having a first portion adjacent to said front side at a first height above said bottom side, and a second portion adjacent to said back side at a second height above said bottom side, said second height being lower than said first height;
(c) a plurality of projections on said second portion of said upper side adapted for engagement in apertures of a geogrid sheet, said projections having a height greater than the thickness of said geogrid sheet, the top of said projections being at a height above said bottom side of said block equal to said first height; and (d) mating engaging means on said upper and lower sides for engaging said block with other such blocks in vertically adjacent courses.
2. A retaining wall block comprising:
(a) a body having a front side for forming a portion of an exterior surface of a retaining wall, a back side, upper and lower sides, and left and right sides;
(b) said upper side of said block having a first portion adjacent to said front side at a first height above said bottom side, and a second portion adjacent to said back side at a second height above said bottom side, said second height being lower than said first height, said second portion having a plurality of bores therein adapted to receive geogrid-retaining pins;
(c) a plurality of geogrid-retaining pins adapted to be received in said bores for engagement in apertures of a geogrid sheet, each of said pins having a lower part which extends into said bore and an upper part which extends upward from said second portion of said upper side of said block, said upper part having a height greater than the thickness of said geogrid sheet, the top of said pin when said pin is positioned in a bore being at a height above the bottom side of said block equal to said first height; and (d) mating engaging means on said upper and lower sides for engaging said block with other such blocks in vertically adjacent courses.
(a) a body having a front side for forming a portion of an exterior surface of a retaining wall, a back side, upper and lower sides, and left and right sides;
(b) said upper side of said block having a first portion adjacent to said front side at a first height above said bottom side, and a second portion adjacent to said back side at a second height above said bottom side, said second height being lower than said first height, said second portion having a plurality of bores therein adapted to receive geogrid-retaining pins;
(c) a plurality of geogrid-retaining pins adapted to be received in said bores for engagement in apertures of a geogrid sheet, each of said pins having a lower part which extends into said bore and an upper part which extends upward from said second portion of said upper side of said block, said upper part having a height greater than the thickness of said geogrid sheet, the top of said pin when said pin is positioned in a bore being at a height above the bottom side of said block equal to said first height; and (d) mating engaging means on said upper and lower sides for engaging said block with other such blocks in vertically adjacent courses.
3. A retaining wall block according to claim 1 wherein said pin has support means between said first and said second parts of said pin, or on said second part of said pin, for supporting said pin on said second portion of said upper side of said block.
4. A retaining wall block according to claim 1 or 2 wherein said mating engaging means comprises male engaging means on said upper side and female engaging means on said lower side.
5. A retaining wall block according to claim 4 wherein said male engaging means comprises two posts and said female engaging means comprises a slot for receiving one said post from each of two said blocks.
6. A retaining wall block according to claim 1 or 2 further comprising a groove in said upper side of said block for receiving an edge of said geogrid sheet.
7. A retaining wall block according to claim 1 further comprising an aperture in said upper side adapted to receive a fence post.
8. A retaining wall system comprising blocks according to claim 1 and geogrid affixed thereto, said wall system comprising:
(a) a first course of said blocks;
(b) a geogrid sheet extending rearward from said first course such that said projections on said second portion of said upper side of said blocks in said first course extend through apertures along an edge of said geogrid sheet; and (c) a second course of said blocks positioned on top of said first course, said lower side of said blocks in said second course being supported by said first portion of said upper side and said projections of said blocks in said first course, and said engaging means on said lower side of said blocks in said upper course engaging with said engaging means in said upper side of said blocks in said lower course.
(a) a first course of said blocks;
(b) a geogrid sheet extending rearward from said first course such that said projections on said second portion of said upper side of said blocks in said first course extend through apertures along an edge of said geogrid sheet; and (c) a second course of said blocks positioned on top of said first course, said lower side of said blocks in said second course being supported by said first portion of said upper side and said projections of said blocks in said first course, and said engaging means on said lower side of said blocks in said upper course engaging with said engaging means in said upper side of said blocks in said lower course.
9. A retaining wall system comprising blocks according to claim 2 and geogrid affixed thereto, said wall system comprising:
(a) a first course of said blocks;
(b) a geogrid sheet extending rearward from said first course such that the upper part of said pins in said bores extend through apertures along an edge of said geogrid sheet; and (c) a second course of said blocks positioned on top of said first course, said lower side of said blocks in said course being supported by said first portion of said upper side and touching said top of said pins, and said engaging means on said lower side of said blocks in said upper course engaging with said engaging means in said upper side of said blocks in said lower course.
(a) a first course of said blocks;
(b) a geogrid sheet extending rearward from said first course such that the upper part of said pins in said bores extend through apertures along an edge of said geogrid sheet; and (c) a second course of said blocks positioned on top of said first course, said lower side of said blocks in said course being supported by said first portion of said upper side and touching said top of said pins, and said engaging means on said lower side of said blocks in said upper course engaging with said engaging means in said upper side of said blocks in said lower course.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2249889 CA2249889A1 (en) | 1998-10-09 | 1998-10-09 | Retaining wall blocks |
| KR1020007005623A KR20010032384A (en) | 1998-10-09 | 1999-10-08 | Retaining Wall Blocks |
| PCT/CA1999/000922 WO2000022241A1 (en) | 1998-10-09 | 1999-10-08 | Retaining wall blocks |
| AU59645/99A AU5964599A (en) | 1998-10-09 | 1999-10-08 | Retaining wall blocks |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2249889 CA2249889A1 (en) | 1998-10-09 | 1998-10-09 | Retaining wall blocks |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2249889A1 true CA2249889A1 (en) | 2000-04-09 |
Family
ID=4162893
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2249889 Abandoned CA2249889A1 (en) | 1998-10-09 | 1998-10-09 | Retaining wall blocks |
Country Status (4)
| Country | Link |
|---|---|
| KR (1) | KR20010032384A (en) |
| AU (1) | AU5964599A (en) |
| CA (1) | CA2249889A1 (en) |
| WO (1) | WO2000022241A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6679656B1 (en) * | 2002-12-13 | 2004-01-20 | Redi-Rock International, Llc | Connection for geogrid to concrete block earth retaining walls |
| ES2396781B1 (en) * | 2011-01-27 | 2014-01-07 | Ingenieros Y Asociados Cvii, S.L. | PIECE FOR THE FORMATION OF GROUND CONTAINING WALLS. |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4914876A (en) | 1986-09-15 | 1990-04-10 | Keystone Retaining Wall Systems, Inc. | Retaining wall with flexible mechanical soil stabilizing sheet |
| US5505034A (en) * | 1993-11-02 | 1996-04-09 | Pacific Pre-Cast Products, Ltd. | Retaining wall block |
| US5540525A (en) * | 1994-06-06 | 1996-07-30 | The Tensar Corporation | Modular block retaining wall system and method of constructing same |
| US5816749A (en) * | 1996-09-19 | 1998-10-06 | The Tensar Corporation | Modular block retaining wall system |
-
1998
- 1998-10-09 CA CA 2249889 patent/CA2249889A1/en not_active Abandoned
-
1999
- 1999-10-08 AU AU59645/99A patent/AU5964599A/en not_active Abandoned
- 1999-10-08 KR KR1020007005623A patent/KR20010032384A/en not_active Application Discontinuation
- 1999-10-08 WO PCT/CA1999/000922 patent/WO2000022241A1/en not_active Application Discontinuation
Also Published As
| Publication number | Publication date |
|---|---|
| AU5964599A (en) | 2000-05-01 |
| WO2000022241A1 (en) | 2000-04-20 |
| KR20010032384A (en) | 2001-04-16 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Dead |