Call Now On
+44 (0)1255
423 601

Click Here
To Contact Us
  • Recent News

  • Categories

  • Blog Archives

  • Search

Archive for the ‘Duct & Gully Covers’ Category

How do composite materials compare to steel for engineered flooring and gully covers?

December 28th, 2013 | Articles, Duct & Gully Covers, News | 0 Comments

Without question, steel is one of the most useful and well-loved materials in the construction industry. Typically, it is used where absolute strength is required, such as flooring and gully covers, as its performance in tension and under loading is remarkable. However, steel does still have a number of drawbacks…

Firstly, steel, like concrete, is heavy. As with concrete elements, therefore, steel parts will usually require heavy lifting gear or significant manpower to get them into position when creating engineered flooring. Secondly, as steel is obviously good at conducting heat, it can be extremely cold in the winter – something that can be a problem when it comes to items that are designed to be held, such as hand railing. Thirdly and finally, steel is very slippery when wet. Though many people are aware of this issue and opt for a chequered plate ‘anti slip’ finish, in reality this offers little in the way of friction when wet.

Once again, if any of these downsides pose a problem for you or your build, composite products could well be the perfect solution. Although steel is still regarded as the best material to use for elements such as structural beams, composite engineered flooring alternatives are not only exceedingly strong, but also far easier to manoeuvre, meaning a much less expensive installation. Unlike steel, it is also easy for composite products to be adapted to provide one of the highest anti-slip surface finishes ever tested. Plus composite elements such as handrails and gully covers are also far warmer to the touch during the winter and reduce the risk of freeze burns in the workplace.
Arguably the biggest advantage of composite materials over steel, however, is the ease with which they can be cut to size. Although it is possible to cut steel to size on site, it requires special equipment and individuals trained in metalwork. Further, once steel has been cut, it really should be regalvanised, which will mean it will have to be transported off site and then back on, costing you both time and money. On the other hand, composite materials, though tough, can be modified with ease on site using standard power tools and won’t require extra treatments.

For more on the many advantages of composite materials when it comes to creating engineered flooring and gully covers, just visit our home page, where you’ll be able to obtain a free copy of my new guide, “How to Choose Composite Building Products”.

How do composite materials compare to concrete for contract flooring?

December 17th, 2013 | Articles, Duct & Gully Covers, News | 0 Comments

Concrete is an extremely strong material, and performs extremely well in compression, making it ideal for contract flooring. However, related to this principal quality is concrete’s main drawback – namely its weight. Even small slabs can be difficult, if not impossible, to lift by hand, meaning jobs such as fitting concrete trench covers will require both a lot of time and significant manpower (if not heavy machinery) – all of which can prove costly. What’s more, difficulty moving slabs in and out of position will also make maintenance and routine inspections unnecessarily problematic. Further still, if a load limit is exceeded for some reason, concrete may crack – something that will often lead to a whole site being closed to vehicles because of an inability to guarantee their safety.

Using fibreglass for contract flooring, these problems simply do not exist. Whilst it is possible to fit fibreglass slabs of up to 100mm without the need for any heavy machinery, they are tested to support loads of up to 40 tonnes. The reason such a light material is able to provide such extraordinary strength is because of its engineered construction. Rather than being solid fibreglass, these slabs are pultruded into a truss-like profile, resulting in a strong and consistent final product weighing up to 80% less than steel and concrete alternatives. What’s more, when fibreglass passes its load limit it will deflect rather than crack before returning to its original form.

For more on the many advantages of composite materials when it comes to contract flooring and other building projects, just visit our home page, where you’ll be able to obtain a free copy of my new guide, “How to Choose Composite Building Products”.

Dura Slab – on target for Norwich City Football Club

April 2nd, 2012 | Duct & Gully Covers, News, Products | 0 Comments

Stuart Burns at Carrow Road

Dura at Norwich City

Getting the right result for our customers has always been priority number one for the team at Dura Composites.

Our goal is to provide winning solutions to each and every one of them regardless of who they are or the nature of the job.

But every now and then a client comes along that sparks more than just a professional interest.

That’s why as a massive football fan myself it’s been an absolute pleasure recently working with Premier League high-fliers Norwich City Football Club.

The Canaries needed a modern alternative to the heavy steel covers that once covered the TV camera pits surrounding the pitch at Carrow Road.

This video demonstrates how Dura Slab provided the perfect solution and explains why this lightweight, high-strength, anti-slip product is proving so popular across a range of different applications.

Dura Slab Has British Safety Standards Appoval

October 26th, 2011 | Duct & Gully Covers | 0 Comments

Dura Slab BS EN124 Approved

Dura Slab is BS EN 124 approved. This European standard applies to gully tops and manhole tops for vehicular and pedestrian areas. In order to reach this approval a Dura Slab panel of 74mm thickness and 1280mm span was subjected to a load equivalent to two thirds of the Class B test load, 83.3kN, and then reduced to zero.

Duct Covers, Gully Covers, Structural Flooring & Trench Covers

This load cycle was repeated four further times and then the permanent set measured which must not exceed 1/100th of the span. The panel was then further loaded to the Class B test load, 125kN, which was maintained for 30 seconds. Following the final load cycle of the BS EN124 test, loading was continued to cause failure. The panel finally failed at a load of 152kN. The panel was found to meet the load requirements for a Class B 125 cover.


British Standard Compliant

Dura Slab can be BS EN 124 approved. This European standard applies to gully tops and manhole tops for vehicular and pedestrian areas. In order to reach this approval a Dura Slab panel is subjected to a repeated load as per BS EN 124 standards. The test is continued to evaluate absolute failure

Dura Slab Load Capacities


Dura Slab Load Capacities

Dura Slab Load Capacities

All data is theoretical. A safety factor of 2.5 has been used to determine which BS EN 124 Classification can be met at each span.

Why use Dura Slab?

September 13th, 2011 | Duct & Gully Covers | 0 Comments

Fibreglass Trench, Gully CoversANTI-SLIP

Dura Slab flooring features a gritted surface that provides outstanding anti-slip protection for personnel – in wet and oily environments. The grit is embedded in the top surface of each panel prior to curing. This combination of integral construction, plus depth of the embedded grit, creates a long-lasting maximum anti-slip top surface.


The ability of our Dura Slab flooring to guard against deterioration from industrial chemicals and environmental factors mean that it is a logical and cost-effective alternative to carbon steel, aluminium, wood or other conventional materials. The panels will not corrode even when exposed to continuous submersion, splash, spills, fumes or gases.


Dura Slab is available in various resin systems, two of which meet the Class 1 flame spread rating of 25 or less, in accordance with ASTM E-84 Tunnel Test Method and to British Standard Part 7 Class 1. classification.


The non-magnetic properties allow the panels to be used in sensitive installations where the inherent magnetic properties of other materials would prove unsuitable.


The construction of Dura Slab Flooring means that even after repeated impacts there is no permanent deformation. The material structure allows deflection, however, once the load is removed, the panel will return to its original shape.


The non sparking qualities of Dura Slab are ideally suited for those installations where hydrogen or other combustible gases may be found. This prevents explosion or fire resulting from sparks produced from accidental dropping of tools onto the panel surface.


The use of Dura Slab virtually eliminates maintenance. This can drastically reduce costs since painting is not required, and UV inhibitors protect against degradation from the sun which means the material does not need replacing.


Dura Slab panels weigh about one-quarter as much as steel grating. Two men can easily handle full panels, without the need for hoists, pulleys or dollies. If the panels need to be moved for cleaning, maintenance or utility access, there is less chance of back injuries. The lightweight design of the material therefore reduces installation costs.


The design procedures associated with Dura Slab are entirely different from those associated with traditional materials. The prime consideration in designing with fibreglass is allowable ‘deflection’ as opposed to ultimate ‘loading’ used with steel and aluminium. The reason for this is the inherent elasticity of reinforced plastic, permitting far greater deflection than steel, without the danger of structural failure or permanent deformation.


A minimum of 38mm bearing support can be provided under the edges of Fibreglass panels. This complies to industry standards.


Dura Slab can provide significant savings over the use of most other materials when taking into account ‘life cycle costs’. This is due to the fact that heavy installation equipment is eliminated, there is zero maintenance plus the fact that access can be provided for servicing simply by lifting the panels.


The non-conductive properties make Dura Slab panels ideally suited for work platforms and flooring situated in electrically hazardous locations.


Fibreglass weighs considerably less than conventional materials, and is easier and less expensive to transport, install and remove. Only simple hand tools are required for installation and removal, eliminating the need for costly equipment and labour costs associated with heavy lifting, cutting and welding equipment.


The high glass-to-resin ratio of Dura Slab flooring provides superior strength and load-bearing characteristics. With structural integrity protected by its unique corrosion resistance capabilities, fibreglass lasts longer than traditional materials.


Breaking strength under a lateral force is exceptional. The uni-directional continuous fibreglass reinforcement offers numerous advantages, including rigidity, shock-resistance and no permanent deformation after overloading. These factors provide excellent mechanical strength and a generous factor of safety. Fibreglass is designed for maximum safety in intensive industrial use.


Dura Slab can be supplied with a specially formulated carbon, black surface, which will eliminate hazardous static electricity when properly grounded. This anti-static property is most advantageous in high tech electronic industries where sophisticated equipment may be damaged due to static electricity. It also provides a safe environment in combustible areas by not allowing static sparks. It can be used in railway fuel stations, circuit board manufacture, oil refineries, underground mining operations, ammunition factories etc. The surface electric resistance is 1 x 105½ to 5 x 105½.


Many plant operations have a need for slightly elevated flooring. Fixed or adjustable pedestals can be used for applications up to a height of 600mm.


Composite structural materials have demonstrated a proven ability to withstand the harsh side effects of corrosive conditions better than galvanised steel. For many years, composites have been reliably used in traditionally corrosive industries such as chemical processing, plating and marine construction. While the cost of material is an important criteria in the design of a project, it does not reflect the total cost of the project. Beyond material purchase price, the engineer also should consider the related costs of installation, maintenance over time and replacement of debilitated materials.

Fibreglass Trench, Gully Covers to B.S. EN124

August 1st, 2011 | Duct & Gully Covers | 0 Comments

Gully Covers, Duct Covers, Structural Flooring & Trench CoversDuct Covers

Dura Slab is ideal for new constructions and replacements for duct covers but is also well suited for refurbishment applications to replace old, heavy & cumbersome traditional flooring materials and covers. The characteristics of Dura Slab make it more favourable for duct covers rather than using steel, timber or concrete systems due to its lower weight, anti-slip surface, ease of installation and absence of maintenance.

Gully Covers & Trench Covers

Dura Slab ideal for gully covers & trench covers is tested to B.S. EN124. This European standard applies to gully covers, trench covers and manhole tops for vehicular and pedestrian areas. In order to reach this approval a Dura Slab panel of 74mm thickness and 1280mm span was subjected to a load equivalent to two thirds of the Class B test load, 83.3kN, and then reduced to zero.

Gully Covers, Duct Covers, Structural Flooring & Trench CoversStructural Duct Covers

Dura Slab is a fibreglass structural flooring system manufactured using a unique construction technique that provides an incredible strength to weight ratio. Dura Slab structural flooring panels are manufactured by the pultruded fibreglass process to provide a composite structural flooring structure that is stiff, strong, light-weight, non-corrosive with an anti-slip walking surface.

Gully Covers

Gully covers are lightweight, high strength, anti slip and easily removed for access. Gully covers can easily be lifted by one to two or four man teams using standard lifting keys.

Dura Slab gully covers are lightweight, high strength composite flooring products which have been engineered for use as gully covers where incredible strength to weight is important.

Gully Covers, Duct Covers, Structural Flooring & Trench CoversDuct, Gully & Trench Covers

Dura Slab flooring panels are generally supplied with angular quartz grit embedded into the top surface to provide an excellent anti slip walking surface. When maintenance is required, the duct, gully and trench covers can easily be removed by a one or two man team using standard lifting keys.