AU2007201302B2 - Channel Gully - Google Patents
Channel Gully Download PDFInfo
- Publication number
- AU2007201302B2 AU2007201302B2 AU2007201302A AU2007201302A AU2007201302B2 AU 2007201302 B2 AU2007201302 B2 AU 2007201302B2 AU 2007201302 A AU2007201302 A AU 2007201302A AU 2007201302 A AU2007201302 A AU 2007201302A AU 2007201302 B2 AU2007201302 B2 AU 2007201302B2
- Authority
- AU
- Australia
- Prior art keywords
- channel
- unit
- gully
- lintel
- precast
- Prior art date
- 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
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C11/00—Details of pavings
- E01C11/22—Gutters; Kerbs ; Surface drainage of streets, roads or like traffic areas
- E01C11/221—Kerbs or like edging members, e.g. flush kerbs, shoulder retaining means ; Joint members, connecting or load-transfer means specially for kerbs
- E01C11/223—Kerb-and-gutter structures; Kerbs with drainage openings channel or conduits, e.g. with out- or inlets, with integral gutter or with channel formed into the kerb ; Kerbs adapted to house cables or pipes, or to form conduits
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Sewage (AREA)
Abstract
- 12 The present invention is directed to a precast one piece channel gully unit for installation along the sides of a highway or freeway. The channel gully unit is prefabricated off-site and merely installed along the highway or freeway. The unit is 5 cast in a multi-part mold assembly so that the parts of the mold assembly can be disassembled and easily removed after the unit is formed. The unit has a channel portion that abuts the highway or freeway and an integral lintel portion extending along one side of the channel portion. An elongate inlet formed beneath the lintel portion and located between the channel portion and the lintel portion is part of a 10 passageway to a storm water drain. Figure 1 3 0-
Description
A CHANNEL GULLY FIELD OF INVENTION The present invention relates to storm water gullies. The present invention 5 has particular but not exclusive application as roadside gullies especially along highways and freeways. BACKGROUND OF THE INVENTION Type 28 channel gully units are installed along the sides of highways and 10 freeways to remove storm water from roadways to storm water drainage pipes. The type 28 channel gully unit has a lintel portion that is inclined downwards toward the highway or freeway. The inclined lintel portion provides a relatively gradual slope for the tyres of a vehicle to ascend the channel gully should the vehicle accidentally traverse the channel gully. The gradual slope provided by the lintel portion 15 minimizes the impact and possible deflection to a vehicle traveling at a high speed across the channel from the highway or freeway. The minimal impact and deflection reduces the likelihood of damage to the vehicles or accidents occurring should a vehicle be driven too close to the sides of the highway or freeway. It is difficult to cast the channel gully units in situ at the site of installation 20 because the formwork required for constructing the channel gully unit is complicated. As the lintel portion of the channel gully unit is inclined, the opening that lies beneath the lintel portion and through which storm water drains is relatively narrow. Because of the gully configuration the inner straight walls of the channel gully unit must be cast first and the formwork for these straight walls removed before the lintel portion is 25 cast. Casting the channel gully unit in stages extends the time required to construct the channel gully. The concrete poured to form the channel gully also requires -2 several days to cure completely to achieve integral strength. As certain lanes of the highway or freeway may need to be closed to separate the construction site from traffic, a prolonged construction time leads to extended periods of traffic delays on the highway or freeway. If the channel gully is exposed to traffic before the curing 5 process is completed, vehicles that traverse the newly constructed channel gully will damage the channel gully. One approach adopted to overcome the problems associated with the in situ casting of the channel gully units has been to cast only part of the channel gully at the site of installation and subsequently bolt on a prefabricated lintel portion. This 10 approach has been viewed by the relevant authorities as posing a safety hazard. The impact exerted on the channel gully by vehicles traveling at high speeds can dislodge the attached lintel portion and thereby cause damage to the vehicles or accidents occurring on the highway or freeway. 15 OBJECT OF THE INVENTION It is an object of the present invention to provide a one piece precast channel gully unit. SUMMARY OF THE INVENTION 20 The present invention was developed through experimentation to form a one piece precast channel gully unit. Because the openings in the channel gully unit are relatively narrow, a one piece mold could not be used to form the precast channel gully unit as the mold could not be removed without damaging the newly formed channel gully unit. Consequently, a different approach was developed to use a 25 multi-part mold assembly.
-3 In one aspect the present invention broadly resides in a precast one piece channel gully unit for installing along highways or freeways including a channel portion; a lintel portion extending along one side of the channel portion and inclined 5 downwards towards the channel portion; and an inlet located beneath the lintel portion and adjacent the channel portion, the inlet is in communication with a storm water drain. In another aspect the present invention broadly resides in a precast one piece channel gully unit for installing along highways or freeways including 10 a channel portion; a lintel portion extending along one side of the channel portion and inclined downwards towards the channel portion; and an inlet located beneath the lintel portion and adjacent the channel portion, the inlet is in communication with a storm water drain wherein the unit is 15 prefabricated off-site with a multi-part mold assembly. The multi-part mold is assembled before casting the channel gully unit and is preferably disassembled in stages to avoid damaging the unit after the one piece channel gully unit is formed. More preferably the assembled mold is inverted to disassemble. 20 The channel portion preferably has an upper channel surface that is inclined in a direction that is opposite relative to the incline of the lintel portion. The upper surface is located opposite to the inclined lintel portion. The inlet is preferably an elongate opening. Preferably, a runnel portion is located within the inlet and the runnel portion 25 adapted to divert water to the storm water drain. The runnel portion preferably has a -4 base wall that is adjacent the upper channel surface. More preferably, a side of the base wall is substantially flush with a section of the upper channel surface. The runnel portion preferably has a back wall that extends from the base wall to an under side of the lintel portion. 5 The base wall of the runnel portion preferably has an inclined surface that slopes downwards towards the back wall. Preferably, the base wall slopes downwards towards the storm water drain. The channel portion preferably has a channel opening that is in communication with the storm water drain. Preferably, a removable grill is located 10 over the channel opening. A plurality of units are preferably connected to form a continuous channel gully along the highways or freeways. It is one option to connect the units by applying mortar between adjoining units. Alternatively, a precast channel gully unit can be formed with at least one recess located in each opposing end walls of the 15 unit. A separately provided dowel is attachable to the recess formed in the units enabling the dowel to connect the two units together. It is another option that each unit has an intergral dowel on one end wall and a recess on an opposing end wall for connecting adjoining units together. In another aspect the present invention broadly resides in a method to form a 20 one piece channel gully unit as described above wherein the method includes assembling a multi-part mold assembly; pouring a concrete or like material into the assembled mold; allowing the concrete or like material to cure and form the unit in the assembled mold; and 25 disassembling the mold after the unit has been formed.
-5 Preferably the mold is inverted to disassemble. The mold is inverted to disassemble to avoid damaging the lintel and the channel walls. In a different aspect the present invention broadly resides in a mold to a one piece channel gully unit as described above wherein the mold has multiple parts, the 5 parts are assembled in a configuration that allows the unit to be formed in an inverted position relative to the installed position of the unit whereby the configuration enables the parts to be accessible for easy disassembly after the unit has been formed. 10 BRIEF DESCRIPTION OF THE DRAWINGS In order that the present invention can be more readily understood and put into practical effect, reference will now be made to the accompanying drawings wherein: Figure 1 is a diagrammatic view of a precast one piece channel gully unit 15 according to a preferred embodiment of the present invention; Figure 2 is a diagrammatic cross sectional view of the channel gully unit of Figure 1, the phantom lines showing the oppositely inclined slopes. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT 20 With reference to Figures 1 and 2, there is shown a precast one piece channel gully unit 10. The channel gully unit 10 has a channel portion 12 and a lintel portion 14. The channel portion 12 and the lintel portion 14 extend parallel to one another along the length of the channel gully unit 10. An elongate inlet 16 is formed beneath the lintel portion 14 and is located between the channel portion 12 and the 25 lintel portion 14.
-6 The lintel portion 14 is inclined downwards towards the channel portion 12 whereas the channel portion 12 has an upper channel surface 18 that slopes downwards toward the inlet 16. The inclination of both the lintel portion 14 and the upper channel surface 18 are relatively acute and preferably approximately 15 5 degrees. The direction of the slope of the upper channel surface 18 is opposite relative to the incline of the lintel portion 14. Storm water is directed by the oppositely inclined slopes to flow into the inlet 16 that forms part of a passageway to a storm water drain. The channel portion 12 has a channel opening 20 that also forms part of the 10 passageway to the storm water drain. The channel opening 20 provides an alternative pathway for storm water to be directed to the storm water drain. A removable grill 22 is placed over the channel opening 20 to cover the gap formed by the channel opening 20 in the channel portion 12. A runnel portion 24 for diverting water to the storm water drain is located 15 within the inlet 16. The runnel portion 24 has a base wall 26 and a back wall 28. One side of the base wall 26 is substantially flush with the upper channel surface 18 and the opposed side of the base wall 26 abuts the back wall 28. The back wall 28 extends from the base wall 26 to an under side 30 of the lintel portion 14. The base wall 26 has an inclined surface that slopes downwards towards the back wall 28. 20 The inclined surface of the base wall 26 also slopes downwards towards the storm water drain. The channel gully unit is installed along the sides of a highway or freeway with the channel portion 12 positioned to abut the roadside of the highway or freeway. The upper channel surface 18 is positioned to be substantially continuous with the 25 surface of the highway or freeway. Storm water on the highway or freeway can flow -7 directly into the channel opening 20 or into the inlet 16. The oppositely inclined slopes of the channel portion 12 and the lintel portion 14 as well as the relatively small angles of inclination of the slopes cause minimal deflection to vehicles that accidentally traverse the channel gully. 5 Several precast channel gully units are connected together to form a continuous channel gully along the highway or freeway. Mortar can be applied to each end wall 32 to connect adjoining channel gully units together. Alternatively, the precast channel gully unit can be formed with a recess on each end side wall of the unit so that a dowel can be attached to the recesses of two adjoining units to connect 10 the units together. The channel gully unit 10 is installed along the sides of a highway or freeway but is prefabricated off-site in a factory. This avoids the need to cast the channel gully unit 10 in situ along the sides of the highway or freeway. No formwork is required at the site of installation and the construction work on the highway or 15 freeway is limited to the connecting together a number of precast channel gully units. This reduces the closure times of lanes on the highway or freeway and therefore minimizing traffic disruptions. The channel gully unit 10 is cast as a one piece unit in a multi-part mold assembly. The multi-part mold assembly is assembled and then concrete or another 20 suitable material that coalesces upon curing is poured into the assembled mold. The concrete is allowed to cure to form a one piece channel gully unit in the assembled mold. After the unit has been formed the mold is dissembled. The use of a multi-part mold assembly allows the mold to be dismantled into smaller parts after the channel gully unit has been formed. The parts of the mold 25 assembly can then be moved around the tight corners of the formed unit for removal -8 from the unit without damaging the unit. The multiple parts of the mold assembly are assembled in a configuration that allows the channel gully unit to be formed in an inverted position relative to the installed position of the unit. This configuration enables the multiple parts of the mold assembly to be removed progressively and be 5 accessible for easy disassembly after the unit has been formed. ADVANTAGES An advantage of the preferred embodiment of the present invention is that casting of the channel gully unit can be done off-site away from the traffic of a 10 highway or freeway. The precast channel gully unit is then brought to the highway or freeway only for installation. The time required for installation of the precast channel gully unit is greatly reduced compared to casting the channel gully unit in situ on the highway or freeway. This means that the lanes on the highway or freeway do not need to be closed for long periods in order to isolate the construction site and there 15 is minimal disruption to traffic flow. The construction of formwork at the construction site is also no longer needed. Another advantage of the preferred embodiment of the present invention is that the channel gully unit is formed as a single piece. A multiple step casting procedure with a curing period for the concrete in between each casting step is 20 avoided. As the channel gully unit is formed as a single piece another advantage of the preferred embodiment of the present invention is that the integrally formed lintel portion is a stronger structure compared to a lintel portion that is bolted onto the channel gully unit. A further advantage of the preferred embodiment of the present invention is 25 that the use of a multi-part mold assembly reduces damage to the unit. This is -9 because the ability to dismantle the mold into smaller parts after the channel gully unit has been formed allows the parts of the mold to be moved around tight corners of the formed unit. 5 VARIATIONS It will of course be realised that while the foregoing has been given by way of illustrative example of this invention, all such and other modifications and variations thereto as would be apparent to persons skilled in the art are deemed to fall within the broad scope and ambit of this invention as is herein set forth. 10 Throughout the description and claims this specification the word "comprise" and variations of that word such as "comprises" and "comprising", are not intended to exclude other additives, components, integers or steps.
Claims (8)
1. A precast one piece channel gully unit for installing along highways or freeways including 5 a channel portion; a lintel portion extending along one side of the channel portion and inclined downwards towards the channel portion, the channel portion has an upper channel surface that is inclined in a direction that is opposite relative to the incline of the lintel portion wherein the incline of both the lintel portion and the upper channel surface 3 are at an acute angle of approximately 15 degrees; and an inlet located beneath the lintel portion and adjacent the channel portion, the inlet is in communication with a storm water drain.
2. A precast one piece channel gully unit for installing along highways or freeways including a channel portion; a lintel portion extending along one side of the channel portion and inclined downwards towards the channel portion, the channel portion has an upper channel surface that is inclined in a direction that is opposite relative to the incline of the lintel portion wherein the incline of both the lintel portion and the upper channel surface are at an acute angle of approximately 15 degrees; and an inlet located beneath the lintel portion and adjacent the channel portion, the inlet is in communication with a storm water drain wherein the unit is prefabricated off-site with a multi-part mold assembly, the multi-part mold is - 11 disassembled in an inverted position to avoid damaging the unit after the one piece channel gully unit is formed.
3. A precast one piece channel gully unit as claimed in claim 1 or claim 2 5 wherein the inlet is an elongate opening.
4. A precast one piece channel gully unit as claimed in any one of claims 1 to 3, wherein the inlet has a runnel portion to divert water to the storm water drain, the runnel portion has a base wall that is adjacent the upper channel surface, a side of 3 the base wall is substantially flush with a section of the upper channel surface and the runnel portion has a back wall that extends from the base wall to an under side of the lintel portion.
5. A precast one piece channel gully unit as claimed in claim 4 wherein the base wall of the runnel portion has an inclined surface that slopes downwards towards the back wall.
6. A precast one piece channel gully unit as claimed in claim 4 or claim 5 wherein the base wall of the runnel portion slopes downwards towards the storm ) water drain.
7. A method to form a one piece channel gully unit as claimed in any one of the claims 1 to 6, the method includes assembling a multi-part mold assembly; pouring a concrete or like material into the assembled mold; - 12 allowing the concrete or like material to cure and form the unit in the assembled mold; and disassembling the mold after the unit has been formed wherein the mold is inverted to disassemble to avoid damaging the lintel and the channel walls. 5
8. A precast one piece channel gully unit as substantially described herein with reference to and as illustrated by the accompanying drawings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU2007201302A AU2007201302B2 (en) | 2007-03-27 | 2007-03-27 | Channel Gully |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU2007201302A AU2007201302B2 (en) | 2007-03-27 | 2007-03-27 | Channel Gully |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| AU2007201302A1 AU2007201302A1 (en) | 2008-10-16 |
| AU2007201302B2 true AU2007201302B2 (en) | 2013-01-24 |
Family
ID=39876418
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AU2007201302A Active AU2007201302B2 (en) | 2007-03-27 | 2007-03-27 | Channel Gully |
Country Status (1)
| Country | Link |
|---|---|
| AU (1) | AU2007201302B2 (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB897467A (en) * | 1960-03-30 | 1962-05-30 | Safeticurb Ltd | Improvements in or relating to kerb blocks |
| US5720467A (en) * | 1995-11-29 | 1998-02-24 | Del Zotto; William M. | Modular curb and sewer casting form |
-
2007
- 2007-03-27 AU AU2007201302A patent/AU2007201302B2/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB897467A (en) * | 1960-03-30 | 1962-05-30 | Safeticurb Ltd | Improvements in or relating to kerb blocks |
| US5720467A (en) * | 1995-11-29 | 1998-02-24 | Del Zotto; William M. | Modular curb and sewer casting form |
Also Published As
| Publication number | Publication date |
|---|---|
| AU2007201302A1 (en) | 2008-10-16 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FGA | Letters patent sealed or granted (standard patent) | ||
| HB | Alteration of name in register |
Owner name: THOMGROUP PTY LTD Free format text: FORMER NAME(S): C-M CONCRETE PRODUCTS PTY LIMITED |
|
| PC | Assignment registered |
Owner name: PRECAST CIVIL INDUSTRIES PTY LTD Free format text: FORMER OWNER(S): THOMGROUP PTY LTD |
|
| MK14 | Patent ceased section 143(a) (annual fees not paid) or expired | ||
| NA | Applications received for extensions of time, section 223 |
Free format text: AN APPLICATION TO EXTEND THE TIME FROM 27 MAR 2019 TO 27 APR 2020 IN WHICH TO PAY A RENEWAL FEE HAS BEEN FILED |
|
| MK14 | Patent ceased section 143(a) (annual fees not paid) or expired | ||
| NB | Applications allowed - extensions of time section 223(2) |
Free format text: THE TIME IN WHICH TO PAY A RENEWAL FEE HAS BEEN EXTENDED TO 27 APR 2020 |