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Erosion Control with Erosaweb

Wayne Alexander • May 17, 2020

Protect stormwater swales with low-cost geocell

Able to handle high-velocity storm flows up to 6m/s, Erosaweb is the economic solution for a range of erosion-control applications including lining of stormwater swales. Priced under $8/sqm, Erosaweb is cost saving compared to much more expensive rock rip -rap or concrete-block systems.

Quick and easy to install, simply lay Erosaweb directly on a prepared sub grade, with a geotextile underlay to prevent scour, expand the panel to full size 4m x 6m and fix with 300mm long gal steel pins.

At this project at Melbourne's Sugarloaf Dam at Christmas Hills, contractor BPC Projects filled the invert of the cells with a cement -stabilised gravel and completed the upper level with soil. http://www.bpcprojects.com.au

Rainsmart (Souther Geosynthetics Supplies) Ellipse and STM Modules Polypropylene Chamber Product Data Sheet
By Wayne Alexander 27 Apr, 2022
DUX CG30 reinforces soft roadway subgrade
By Wayne Alexander 11 May, 2021
Have a look at the torture that DUX 600c heavy-weight non-woven geotextile puts up with during installation of large 1.0m diameter toe rock along the Maribyrnong River at Footscray. Part of $12M refurbishment work including construction of timber boardwalk. Expert installation by Simpson Constructions. Thanks to Project Manager Jason Ting for the great video.#DUX#geotextile#simcon#y content of your post goes here. To edit this text, click on it and delete this default text and start typing your own or paste your own from a different source.
By Wayne Alexander 29 Mar, 2021
DUX CG30 composite geogrid is currently being installed at PA Burns Reserve carpark reconstruction at Altona foreshore by contractor Elite Roads.The area is an old landfill, containing contaminated, uncompacted fill, so traditional “proof-rolling” was not possible. DUX CG30 geogrid together with a 150mm layer of Cement Treated (CT) crushed rock was chosen to help bridge across the soft ground. A further layer of 150mm of crushed rock and 30mm asphalt wearing course completed the pavement. DUX CG30 is a 30x30kN/m polypropylene bi-axial geogrid combined with a 150gsm non-woven geotextile. The geogrid locks into the aggregate and the geotextile provides the important separation function. Some 4,000sqm of CG30 was laid across the entire 100 carspace carpark.#DUX#geogrid#pavement#eliteroads# here. To edit this text, click on it and delete this default text and start typing your own or paste your own from a different source.
By Wayne Alexander 26 Jan, 2021
Geosynthetic Clay Liners ( known as “GCL”) are widely used in civil construction as alternative to compacted natural clays. GCL’s comprise bentonite, granular or powdered, sandwiched between two geotextile layers. Granular bentonite GCL’s are by far the most popular worldwide. A 5mm GCL can replace a metre thick CCL layer. The key advantage of a Granulated Bentonite GCL is that it creates less dust during installation than powdered bentonite and the bentonite is less likely to shift through the needlepunch reinforcement process resulting in a more consistent hydraulic performance. It is interesting to note that in Australia powdered bentonite is almost always specified, but this has nothing to do with functional requirements and a lot to do with good marketing. Standard industry specifications, such as USA GRI-GCL3 and GRI-GCL5 make no stipulation about the type of bentonite to be used. If you are paying more than $5/sqm for a GCL you should ask your designer why they are specifying powdered GCL’s only and restricting your market choices. Contact me on 0419 478 238 for more info on specifying GCL’s by properties relevant to function. 10,000sqm of DUX SPL40 Geosynthetic Clay Liner (GCL) has recently been installed by Waters Excavations at the Wentworth sewage ponds near Dareton, NSW. The leaking ponds required re-lining and SPL40 was installed together with a 300mm soil cover layer for surcharge. GCL’s are simple to install, simply roll out, overlap and paste joints and cover. DUX SPL40 GCL is a multi-component system made from a high-tensile PP woven base, internal sealing material consisting of granulated sodium bentonite and a robust PP non-woven as the top layer. A special precision-needling technique, based on state-of-the-art engineering, is used to join together the three components to produce a homogeneous, structurally continuous liner sheet.
By Wayne Alexander 13 Jan, 2021
A massive 12m high dump wall is currently under construction at Matthews Quarries Tyers site. High-strength DUX polyester geogrid is being installed in 500mm lifts to take the extreme lateral pressure off the concrete facing panels. DUX grid was supplied in a range of strengths up to 150kN/m. The simple, low-cost geogrid “wraparound” design ensured rapid construction. Southern Geosynthetics provided valuable design support for this demanding structure.
By Wayne Alexander 13 Jan, 2021
Over time coastal erosion had cut some 100m into the Port Fairy foreshore exposing an old landfill. As a stop-gap effort to combat the erosion Council approved the construction of a $1.1M rock rip-rap seawall. Over the last few seasons 15,000sqm of DUX 600c geotextile has been installed beneath large marine beaching by specialist contractor Earth and Water Technologies. DUX 600c is a heavy-weight 600gsm non-woven staple-fibre polypropylene geotextile. The high robustness, or “G” rating over 10,000, provides enormous strength and the staple-fibre structure ensures extremely high abrasion resistance, to resist wave action, making DUX 600c the ideal choice for all marine seawall applications. See the installation video on Youtube at https://www.youtube.com/watch?v=wYlRAS2uY8M
By Wayne Alexander 22 Dec, 2020
Rainsmart Ellipse and STM modules have recently been approved by City West Water for use for underground water storage, OSD and stormwater infiltration. This approval applies for all Melbourne Retail Water Agencies, please see the MRWA website product portal for more details, www.mrwa.com.au
By Wayne Alexander 14 Jun, 2020
Terravault 2 (TV2) is currently being installed throughout the Wangaratta Rail Trail project by contractor Excell Gray-Bruni. The TV2 triple modules are filled with organic soil and the open structure allows free growth of the tree roots, without damaging the surrounding paved areas. TV2 modules are super strong, with a crush strength greater than 65 tonne/sqm, allowing installation in areas subject to heavy vehicle traffic.
By Wayne Alexander 14 Jun, 2020
A Section 173 Agreement is a contract between a Council and a landowner that places restrictions on how the land may be developed, including stormwater management. For land subdivisional developments Onsite Stormwater Detention (OSD) may be required to be installed by the builders on each house lot; but this is difficult to enforce and is often omitted during building works. For this reason a number of eastern suburbs councils are now requiring OSD to be installed at the time of initial land subdivision.The Rainsmart Ellipse modular tank system is ideal for this application, allowing flexibility of layout and storage volume. The Ellipse system is strong, trafficable, quick and easy to assemble and install and at under $200/cm provides cost savings over competitor systems. At this project at English St, Seville, an Ellipse Double Module OSD tank was installed on each of seven lots, varying from 11kL to 23kL. #OSD#Ellipse#stormwater#
By Wayne Alexander 30 May, 2020
Richland Avenue, Coopers Plains was in very bad condition; the road was structurally sound but the old asphalt surface was severely oxidised and "crocodile" cracked. Complete reconstruction would have been very expensive. DUX 50/50-25 asphalt grid, together with a 40mm asphalt overlay proved the ideal, low-cost alternative. DUX grid prevents reflective cracking, protecting the new asphalt surface. In night works in May 2020, Brisbane City Works crews laid 4,200sqm of DUX Asphalt Grid, transforming Richland Avenue into a new road.
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