Top Notch Railing and Grating for Zeekoegat WWTW

Tshwane’s Zeekoegat wastewater treatment works (WWTW) stage 1 upgrade and expansion project is one of the latest developments under construction which bears testimony to the excellent service and product quality that Andrew Mentis offers. Main contractor on this project is Concor Civils, a Murray & Roberts Construction company.

The project commenced in October 2010, and sees the construction of a new 40 Mℓ/day BNRAS (Biological Nutrient Removal Activated Sludge) module to boost the existing capacity of the WWTW. Completion is scheduled for early 2013.

Towards the end of 2011 structural steel specialist Vital Steel Projects was sub-contracted by Concor Civils to fabricate, supply and erect all structural steel components for the Zeekoegat expansion. A large portion of this contract includes handrailing and stainless steel floor grating.

Vital Steel Projects was first established in 1995 and is based in Olifantsfontein. It caters to both small and large structural steel projects across the SADC region.

“When it comes to handrailing or stainless steel floor grating, Andrew Mentis is our supplier of choice. We have dealt and worked with the company for over 10 years. They always provide an excellent service and their product quality is superior,” says Chris Garside, Vital Steel Projects general manager.

Andrew Mentis’ contract includes the supply of galvanised and stainless steel handrailing systems, as well as 3CR12 stainless steel floor grating for the inspection pits

Andrew Mentis’ Rectagrid RS40 floor grating is the ideal solution for wastewater treatment plants due to its corrosion resistance. It is manufactured using a pressure locking system pioneered by the company. Quality control during the manufacturing process ensures that close tolerances are maintained, and that the round transversal bar fits tightly through the pierced bearer bar.

“Our manufacturing process produces unquestionable locking characteristics guaranteeing the structural integrity of the product, and further enhancing its integrity in a corrosive environment such as that found in wastewater treatment works,” says Elaine van Rooyen, marketing manager of Andrew Mentis.

“Load bearing capacity is vital when floor grating in used in environments where personnel safety is of primary concern, and the integrity of manufacture is non-negotiable. The transversals are positively and permanently locked to the bearer bars and the locking method at the intersections is designed to use the full depth of the bearer bar when calculating loads,” she adds.

The advantages offered by the company’s stainless steel tubular handrailing outweigh competitors’ products in every regard. It is corrosion resistant, maintenance free, has stain-resistant properties and is ideal for damp environments, making it ideal for the Zeekoegat WWTW. The stanchions’ base plates are designed to allow moisture to drain from the stanchion itself, enhancing the corrosion-resistant benefits.

“The Zeekoegat project is a prime example of the levels of service Andrew Mentis is prepared to give its customers,” Garside continues.

“Wastewater treatment plants such as Zeekoegat require hard-wearing materials, but that does not mean quality and aesthetics have to be compromised, and Andrew Mentis handrailing systems have clean, modern lines.”

Mentis’ 304 stainless steel and 3CR12 handrailing systems are completely different to the company’s standard mild steel handrailing system. The stanchion is 44.5 mm in diameter with a 2 mm wall thickness and is formed from one length of tube. The centre hole for the knee rail is drilled and then flared on both sides. The top is also flared and a half round cap is welded into place. The base plate is 8 mm thick and welded to the tube.

“Andrew Mentis handrailing is often a standard industry requirement because of its superior quality. And the company goes the extra mile to customise product to meet specific application requirements, and they always deliver within the timeframes they promise,” Garside notes.

Category: Floor Grating, News


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