WACC

VPN – the abbreviation from English deciphered as Virtual Private Network which is created over the main World Wide Web.

For what is all this?

Thanks to VPN technology in case of connection to the Internet, the client has much more opportunities in comparison with the habitual use of the Internet. It is possible to allocate the main benefits: anonymity, confidentiality, complete data protection and also almost unrestricted access to Network content.

With VPN service use in social networks or during financial transactions by means of the Internet, the third parties won’t be able to receive any transferred or accepted information. And this opportunity isn’t tied to specific GEO-location.

Wooden house construction favorably differs from the alternative options. Its main advantages include: relatively high building speed, relaxing healthy atmosphere ( due to the natural wood smell), ecologically pure raw materials, work at any time of the year, climate control in the premises (cool in summer and warm in winter), cheapness and affordability of construction materials. 
Today, the timber houses are especially popular in the construction industry. Architectural and engineering firms offer their customers not only to create the project of their future house, but to buy ready timber houses. They became so demanded due to their characteristics, including the following:

Ecologically friendly building materials. The houses are built only from the pure timber, resistant to rot. The customer can develop the sketches, and the experts can adjust them and correct them, if necessary. The construction companies offer ready timber houses, whose price will pleasantly surprise you. The possibility of constructing “turnkey” houses with the use of different kind of bars.

Today the houses made of timber are very popular. They are characterized by safety and comfort. The projects of these houses are developed specifically. The customer can choose the house in European style or order the timber house for the cottage. Woodblock is not only a durable and practical, but also affordable material. Therefore, before buying wooden house, you should make all the necessary calculations. In some cases, it would be cheaper to build the wooden timber house than to buy a ready one.

You should take building and designing of your house very seriously. After all, it is your home that will serve you for decades. The main feature of the wooden timber house is the absence of foundation. The box itself can be built quite fast, and the internal work doesn’t take much time. Such houses are made out of conifers, as only these trees have a high concentration of resin, which provides durability.

The price of timber houses depends on: the type of construction material; the area of the house; the presence or absence of additional premises. Even the smallest details are described in the project. If the decision is made, and you are ready to buy a timber house, the building company you will contact will help you to choose the finished project that will meet all your requirements. The experts also can offer you wooden timber houses. So, among the building companies, providing building services of wooden house construction, we can highlight the one called “Piggott & Whitfield”. Apart from the ready houses, the company specializes in the building, offering the full range of services- starting from the engineering and ending with the landscape design. So, you can safely order the wooden timber house, and in a short while your dream will come true. We ensure durability, safety, and more importantly, affordability of the timber houses. The experts of our company will undertake preliminary consultation and help you to make a calculation of the project cost or provide the ready sketches. Using them, you’ll be able to choose and buy the timber house at an affordable price. The wooden house will become not just your dream house, but also economical and practical solution. It’s up to you to decide which house will be the embodiment of your dream.

Polyshield Hi-E represents a sprayed polyurea elastomer that meets the highest technological and operational requirements for elastomeric coatings. The unmatched efficiency Polyshield is achieved due to a set of amino-polyester resins, amino-resin and isocyanate. The conjunction of elements contributes to creation of a flexible, durable and monolithic membrane with good resistance to water and chemical attack.

Polyshield features

The revolutionary material boasts 100% eco-friendliness; it is free of harmful impurities, solvents and other volatile organic compounds. The high speed gel material allows coating a layer just once regardless of whether the surface is vertical or horizontal. Unlike tar board and mastic-bituminous roof coating materials, Polyshield Hi-E sustains a wide temperature range (from -60°C to +150°C) with no changes in physical parameters.

Polyshield guarantees high elasticity and resistance to cracking; moreover, it offers reflex properties, meaning it reflects the sun’s energy by 65%, beating the traditional competitors that absorb solar energy, which leads to overheating of the roof in the summer. According to Britannia, a prominent polyshield manufacturer and a roof coating and roof waterproofing expert, admits the fact that Polyshield has recently acquired the bestselling status in its niche, and the gap between analogs keeps on growing.

Spheres of application

Mentioned below is the list of industries and spheres where Polyshield is actively utilised:

• Roof waterproofing (concrete and metal roofs, foundations and ground floors of buildings)
• Used as protective elastomer for sprayed polyurethane foam
• Used for waterproofing of concrete tanks, swimming pools, tanks sewage, treatment plants, dams, tunnels, barges and etc.
• Used as a covering membrane with geotextile fabric for encapsulating garbage in landfills.
• Applied as a sealant for polystyrene and many other materials
• Utilised as a protective coatings for decorative items (e.g. columns, waterfalls, statues, highway markings, etc).

Top Polyshield Solutions: the might of polyshield K5

One of the most important tasks for pipeline valves is a reliable shutoff of transported liquid or gaseous medium. This task is equally relevant for households as well as for large industrial enterprises. The task is solved by installing a special pipeline valve, performing just a single mission – shut off the flow.

Oil, chemical and gas industry is difficult to imagine without such an important detail. After all, it is no secret that it is an essential element of piping systems – the device has appeared in the market a century ago, knowing no cost-effective alternatives. Stop valves, which are produced at modern, high-tech companies like Orseal, specialising on ball valves and industrial ball valves, keep the interest towards quality equipment at a high level.

Currently, the production of steel stop valves, particularly ball valves flanged, using various brands of the best grades of steel. Therefore, flanged ball valves can be used at a temperature up to 60 degrees below and 200 degrees above zero. It does not matter whether it is normal, aggressive environment or liquid environment. In modern industry, flanged ball valves can be found anywhere. Gradually displacing their competitors, conical and cylindrical valves, ball valves have acquired the status of bestsellers.

Depending on the type of connection to the pipeline ball valves can be divided into several types: for example, the coupling ball valves, flange ball valves, ball valves, welded and choke. The most common ball valves are used in the transportation of oil, natural gas and other chemical products. Well, the city utilities systems would have simply ceased to exist without them. For heating systems and water supply ball valves are the best choice. And distinguished by its compact size, reliability and ease of use and installation, ball valves flanges are simply irreplaceable in the oil and gas industry. In addition, ball valves can be manufactured customly for particular purposes, for example:

Borehole drilling is the process of creating an excavation of a cylindrical shape by breaking the rocks at the bottom. As a rule, borehole drilling is carried out in the crust, at least in case of working with artificial materials (concrete, asphalt and etc.). In some cases the process includes fixing the casing walls with the injection of cement slurry into the annulus between the pipe and the walls of the borehole.

The scope for boreholes drilling is extremely diverse and includes a broad variety of aspects, including mineral resources exploration, rocks properties researching; liquid, gaseous and solid minerals production through boreholes drilling; artificial rocks fixing (freezing , bituminization, cementation and etc.); draining flooded areas and wetland for mineral deposits e; laying of underground utilities, construction of pile foundations and etc.

Borehole drilling methods classification

Due to outstanding efficiency borehole drilling and the related fields have formed a separate branch in geophysics. Frankly speaking, the classification of drilling methods is a topic for the whole book, so mentioned below is a brief description on the main directions of the branch.

Therefore, the drilling methods are divided into mechanical ones that imply direct action and non-mechanical characterized by the action (thermal, explosive and etc.) applied to the source of the deposit. Mechanical drilling methods are divided into rotary and percussion (though, they may be combined). In rotary drilling the rock collapses due to rotation of the anchored instrument to its bottom. Depending on the strength of the rock, borehole drilling experts make a decision on the type of drilling tool to utilize (diamond drilling tool or special crowns).

As a rule, a seasoned company is ready to take advantage of any suitable method, meaning its arsenal features the required equipment and staff. If you are looking to have your borehole project delivered quickly and diligently, get in touch with the proven industry professionals –European Geophysical Services. The company has more than 9 years of geophysics and borehole drilling experience accordingly, having delivered over 100 domestic projects in United Kingdom.

Under the fire resistance of concrete a short-term reaction to fire is meant, while heat resistance of concrete is resistance to long-term and permanent high temperatures. Concrete is one of the not many solid fire resistant materials. Due to the relatively low thermal conductivity of concrete short-term exposure to high temperatures does not have time to cause significant heating of concrete and reinforcement covered with protective layers. This is where watering strongly heated concrete with cold water (primarily in fire fighting) is much more dangerous, as it inevitably causes the formation of cracks, the destruction of the protective layer and exposing the valve with continued high temperatures.

Under conditions of prolonged exposure to high temperatures conventional concrete based on Portland cement is not suitable for use at temperatures above 250°. It was found that when heated above 250-300° a reduction in the strength of the decomposition of calcium hydroxide and the destruction of the structure of cement stone. At temperatures above 550° grains of quartz sand and crushed granite start to crack due to the transition of quartz at these temperatures in another modification (tridymite), which is associated with a significant increase in the volume of quartz grains and the formation of microcracks at the point where the grain and cement stone are connected. At higher temperatures a range of other structural elements of conventional concrete is destroyed.

Heat-resistant concrete production for extreme t

However, there are ways to create heat-resistant concrete, resisting the temperatures of 1100-1200° or more. And according to scientific Telling Company experts, a UK-based engineering business, widely utilising hydraulic lime, lime mortar and concrete technologies, such technology will become the production standard in the nearest decade

To achieve this, the concrete grinding mill must have siliceous additives or binding free calcium hydroxide released during the hydration of cement. As the fillers materials having a sufficient degree of fire resistance and heat resistance are used, such as chromium iron ore, fire clay, basalt, andesite, depleted blast furnace slag, tuff and brick rubble. The maximum temperature such design can withstand depends on the fire resistance and thermal stability of aggregates and additives. Thus, the application of fire clay and additives increase the maximum operating temperature of fire-resistant concrete up to 1100-1200°. With a maximum operating temperature of 700° basalt, diabase, andesite, depleted blast furnace slag can be used as concrete fillers and as additives – pumice, fly ash and blast furnace slag can be utilised. For the same temperature (700°) it is permitted to replace Portland cement in concrete with slag Portland cement without introducing fine additives.

For the preparation of heat-resistant concrete with operational temperatures up to 1300-1400° aluminous cement should be used with small and large aggregates of grog or chromium iron ore. Mill ground additive for binding of calcium hydroxide in this case is not required. As a binder for heat-resistant concrete with a maximum temperature up to 900-1000° liquid glass with sodium silicofluoride can be used.

The productivity of lifting equipment is the number of tons of cargo or designs, processed per unit of time. In practice, operational productivity is consider to be the volume of work performed by machine. The operational performance of the crane is affected by a number of fixed and variable parameters. The article is prepared basing on the material published by the leaders of the industry: GMH, a far-famed manufacturer, lifting equipment inspection and lifting equipment services expert, as well as Machinery Britannia, another major UK business.

Constant parameters are determined by performance characteristics of the crane’s load capacity (including the cases with no outriggers and traveling with a load), hook height, speed of movement of workers, the method changes the length of the arrows, time-consuming to install working equipment and ease of maintenance units.

Variables do not depend on the design of the crane – they are determined by the conditions of its application and driver’s qualifications. These include: the kind of cargo, type of work, design-planning decisions of the object, the type of cargo handling point, the technological scheme of work, type of road base, as well as the location of the object area.