Highway Noise Barrier

Environmental Barrier

Description of Structure

The highway noise barrier fences are acoustic barriers in accordance with Clause 2504 of the specification for Highway Works. (1998 consolidation version) and Departmental Standard HA 66-95 – Environmental Barriers: Technical Requirements.

The fence has been laboratory tested in accordance with BS EN 1793:1998 (Parts 1-3) and has reached performance category B3 or A3.

The installation will be carried out by an installer registered to BS 9001:2000 Sector Scheme Document 2 C (The Design, Supply, Installation and Repair of Environmental Barriers (Structural))

Structural Type

The supporting posts of the noise barriers acoustic fencing are vertical cantilevers in structural steel sections embedded into mass concrete foundations of 1m depth x 0.45m diameter.

The infill panels are constructed using timber rails spanning horizontally between the supporting posts and vertical timber boards spanning continuously over the rails.

Absorptive panels will have a rockwool infill with a protective membrane over the face.

Foundation Type

The barrier will be founded in the existing ground on mass concrete foundations.

Articulation Arrangements

The posts act as vertical cantilevers and the panels act as simply supported one-way spanning slabs.

Proposed Arrangements for Inspection and Maintenance

Design life – 40 years, no major maintenance for 20 years. The environmental barrier should be inspected for maintenance during normal routine highway boundary inspections.

Materials and Finishes

Environmental Barrier:

The posts of the acoustic fencing are UB section steel Grade S275JR to BS EN 10025:1993, and will be galvanised to BS EN ISO 1461:1999, after fabrication. The posts will be embedded into isolated mass concrete foundations to a depth of 1m x 0.45 m diameter. The concrete mix for the foundations will be ST5 and there are no special requirements for resistance to ground sulphates for this site.

The timber components of the barrier will be treated using Tanalithe “E” (Green). The top will be finished with a once weathered capping. The reflective face of the fence will consist of 150mm*22mm vertical boards and 65mm cover strips, nailed through into the rails and gravel board using galvanised annular ring shank nails.

All timber to be preservative treated to BS 5589:1989.

Technical

*For Quixolid, 1100 mm / **Not available from stock in RAL 7016
Fence height (m)	Panel Size WxH (mm)	No. “V” Bars per panel	Overall Length of Post	Post Size (mm)	No. Clips Per Post	No. Clips Per Corner
1.2	1230 x 3005	2	1800	60 x 60	3	6
1.5	1530 x 3005	3	2100	60 x 60	4	8
1.8	1730 x 3005	3	2400	60 x 60	4	8
2.0	1930 x 3005	3	2700	60 x 60	4	8
2.4	2330 x 3005	4	3150	60 x 60	5	10
3.0	2930 x 2445	5	3900	60 x 60	6	12

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Unlike many commercial fencing contractors who only provide the manufacturer’s warranty for materials, we also cover our installation.

You can trust that our work will hold up for a decade longer than anyone else’s.

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Based on 59 reviews

Wonderful job these guys did - Daniel & Liam the installers were professional, polite and advised what the process was going to be.

Graeme F.

Terry and Sam have done some really fabulous work for us. Totally reliable and give a full service experience for the customer. Will always go the extra mile to make sure the job is just right.

Karen J.

I bought 2 beautiful benches which were advertised at a much lower price than anywhere else on the web. They arrived promptly with a courier.
A couple of components were missing but were replaced with no fuss following one simple email to Jade Wallace, whose customer service was second to none.
Thoroughly impressed by this company and it’s EASY customer care.

Marion S.

Very pleased with the service from Knight Fencing. From the visit
to see property and receiving my quote, to the work carried out
both men very polite and experienced . All work excellent.

Lucy D.

We recently bought the Hutton Six Seater Round Picnic Table from Knight Fencing and are really pleased with it. It's sturdy, good-looking, and feels like it's built to last. Assembling it took about an hour, but the instructions were super easy to follow.

We had one small hiccup - we cross-threaded a bolt by mistake. But, it wasn't a problem as they'd included some spare parts in the pack, so we sorted it out quickly.

If you're near Sidlesham, do swing by their display area. It's full of tough garden furniture, different types of fences and gates - worth a look. Plus, if you're in the PO postcode area, delivery is free.

All in all, I can definitely recommend Knight Fencing and their Hutton picnic table. It's a good buy and they're excellent to deal with :)

The P.

I am very pleased with my hit and miss fence and my new handrails, work was completed in the promised time, everything was left clear and tidy, all by very friendly, helpful and professional experts. Recommended.

Michael P.

Knight installed new fencing for my rear garden. Looks great and I am very pleased with their service.

Sam K.

I couldn’t be happier with my new fence! From start to finish, the team was professional, efficient, and attentive to every detail. They offered expert advice on the best materials and design for my property, and the installation was seamless. The quality of the craftsmanship is outstanding, and it has truly transformed the look of my garden. I highly recommend this company to anyone looking for reliable, high-quality fencing. Excellent service and amazing results!

Mrs C.

Great and efficient response to a post that needed replacing. Thank you Terry.

Laura S.

Terry from Knight Fencing completed a 22m 6ft high fence and gate installation for us in April 25. From the initial quote Terry went above and beyond to suggest clever solutions to how we wanted the fence put in, eventually helping us to settle on a trellis to keep the view from the end of the garden. When completing the work he and Sam arrived promptly and worked so hard all day to get the work done. They have done an incredibly professional job, the fencing looks fantastic and they left the garden, if anything, tidier than it was before they arrived! I would highly recommend them and thank you for doing such a great job, we can now enjoy the garden without worrying about our dogs escaping!