Flood Defence

Flood Defence 1defence flood 2

The test procedure adopted is that outlined in FM 2510: Approval Standard for Flood Abatement

Equipment section 4.3:

Test Description Condition* Duration
Hydrostatic Load 100 percent x h ± 0.6cm 22hr
Dynamic Impact Load Impact at weakest point of system N/A
Post Hydrostatic Load 100 percent x h ± 0.6cm 1hr
Dynamic Impact Load Impact at the system connection to the supporting structure N/A
Post Hydrostatic Load 100 percent x h ± 0.6cm 1hr

 

On-Site Flood Testing

on site flood testingTo give full confidence in the performance of our flood defence products we offer on-site flood testing. The specific means of testing varies on each project and product and includes utilising a temporary bund to simulate a flood event or fixing a specialist rig to the outer frame of a product to test it in isolation.

Blast Testing

Performance testing for products designed to resist explosive loadings is a key element in the Defence Doors design process. Generally testing is undertaken in line with the method from ISO 16933:2007 – Glass in Building – Explosion Resistant Security Glazing – Test and Classification for Arena Air Blast Loading. Other standards for blast testing include:

  • GSA-TS01-2003, US General Services Administration, Standard Test Method for Glazing and Window Systems Subject to Dynamic Overpressure Loadings
  • ASTM International, F 1642-04, Standard Test Method for Glazing and Glazing Systems Subject to Airblast Loadings
  • BS EN 13123-2:2004, Windows, doors and shutters – Explosion Resistance – Requirements and Classification – Part 2: Range Test

Our doors have been tested using a 100kg TNT equivalent explosion at a 25m range. The doors performed to category I remaining closed and fully operable post-blast.

We have also had a range of blast windows tested under the same conditions, performing to ISO 16933:2007 Hazard Rating A (No Break).

Beyond type testing of doorsets, each blast product we design is subject to an independent check of the calculations used during the design phase. This verifies the product can withstand the blast loading specified by each of our customers.

Fire Resistance

fire testingFire resistant doors serve an important purpose during a fire event. They restrict the development and spread of a fire, minimising the damage it can cause. They also allow for safe evacuation, protecting escape routes for emergency egress.

Test standard BS EN 1634-1 evaluates the time a door can withstand a fire attack – the time it can prevent flames or hot gasses from passing. We have had several doorsets tested in accordance with BS EN 1634-1 up to a performance time of four hours.

Gas Tight Testing

We can undertake gas tight doorset testing for specific projects. Normally this requires the involvement of a third-party verification body to independently assess the performance of the product before dispatch. Testing is undertaken in a chamber as specified under BS 7268 and test standards used include ASTM F1069 – 87 (2012) and BS 6375-1:2015

Hydrostatic Load Testing

The fundamental test for our products is a 24-hour hydrostatic load flood test. This tests the performance of a product’s flood seal during a flood event and also the ability of the product to withstand the significant pressure created by the hydrostatic load of the flood water. We typically test products up to a height of 1.5m.

Dynamic Impact Load Testing

Considering the high risk of large debris impacting a flood product during a flood event there is a need to test products to ensure that they are able to withstand such an impact. To simulate such an impact Defence Door Systems utilise a dynamic impact load test. This test involves two impacts of 600J each from a 50kg rigid falling object simulating floating debris. The product is subjected to a 1-hour hydrostatic load flood test after each impact to determine its continued functionality.

Duct Sealing

As well a testing our fabricated flood products, we use our test facility to seek new methods of civil and installation related solutions. Our unique duct sealing system is one example of this. Working closely with partners in our supply chain we have developed a Defence Doors Duct Seal system used to prevent flood water ingress through cable entry ducts and installed by our trained and skilled flood defence engineers.