Who invented heras fencing

In part 8, we talked about Heras exporting its fences worldwide. In part 9, we focus on our innovations and the launch of new business units. In , an engineering department is set up that focuses on the development of new products. The development of our security fence has been one of our greatest challenges. In the first place, a security fence is intended to keep potential intruders or prisonbreakers out. Secondly, a security fence must have intrusion detection, a detection system that sets off an alarm when a motion sensor is activated.

We are now working on solutions to counter these new ways to break out of prison. However, we should avoid that prisoners are locked in cages. Caging inmates is an easy but unacceptable solution from a human rights perspective.

The bar fence, the turnstile, the sliding gate and the cantilever sliding gate were developed in the past by Frans Ruigrok. Ruigrok also came up with the idea of an aluminium lower beam with a pre-stressing technique inside the beam in which the bars are embedded. In the Netherlands, the legal liability for accidents on a construction site lies with the builder or contractor.

Heras founder, Frans Ruigrok, decided in to immediately begin the serial production of temporary fencing in order to secure construction sites. Welting, associated with Heras since "The site fence filling was made from concertina wire.

A tube in the middle provided additional reinforcement. The first frames were 2 meters high and 3. This dimension was selected fairly intuitively, but it is now the standard throughout Europe. About marketing in the 60s: "The new offer would create its own demand, argued Ruigrok. He placed the Heras name on every single fence piece and they sold like hot cakes. How long should a fence last?

The first thing you should know in estimating the life of your fence is the natural life of your wood. The most commonly used wood types for fences are cedar, spruce, and pine.

Depending on the species, cedar may last for about years, spruce may last for about years, and pine may last for about years. How can I make my fence last longer? Clean Every 3 — 5 Years Every two to three years, clean the wood to remove dirt, moss, mildew and graying. Then, recoat with a UV inhibiting, water-repellant coating. After making repairs, scrape off any moss or loose, peeling paint until you can see new wood, and clean the fence with a pressure washer.

Should a wooden fence touch the ground? Should the Fence Touch the Ground? In most cases, no fence materials other than your fence posts should touch the ground.

Allowing your fence to touch the ground makes yard maintenance more difficult and may increase the speed at which your fence suffers moisture damage, depending on the fence material used.

How do I keep my wood fence looking new? Always use the best of pressure-treated wood on a fencing project, as it is designed to last many, many years. On the list of top tips for keeping the wood fence looking like new are: Clean the fence regularly. Keep on top of the repairs. Stain, seal, and paint. Invest right from the start. Garden design can help. How does magnetism affect the growth of plants? What is a waist length fitted sleeveless garment worn over a shirt or blouse? Which of the following drugs is associated with the reaction of extreme photosensitivity?