Roger Jett Cable

In adaptable to the needs of data center premises wiring from the ceiling needs to bypass a variety of obstacles. And although such "maneuvers" can be met (as, essentially, and have sometimes Green's deal with the company for its customers), they are not always simple and cheap. For some data center managers when deciding about the place pulling cable is a critical factor such as the external appeal halls. "Some data centers have become places of" entertainment concepts ", arranged by the owners for their clients or investors – notices from the company Panduit. – Many of the owners of DCs do not want anything to place over the enclosure for aesthetic reasons. " There are other reasons that may persuade the owner of a data center to accommodate cabling under the raised floor.

During her presentation, Julie Roy of C2 Consulting companies stated that Most computer systems provide connections for cables from below. And Roger Jett adds that many users a cable channel over the cabinets and the other – under the raised floor. In some cases, users pave the raised floor only power cables, and sometimes – and the power and information. Where to go under the floor of Andy said that, if the information cabling runs under the raised floor, "to protect and support introduced into the racks and racks of cables is very important to lay the cable route in the immediate vicinity of the entry to the specified mounting components. "When you pave the cable under the raised floor, it is important to place it as possible above concrete floors of the building and as close to the raised floor "- says Tony Lukabill of the company's gs Metals, adding that it provides a passage under the raised floor maximum possible volume of air flow. He also said that any passing under the raised floor cables, including power cables in the cold aisle data center should be placed in cable trays, mounted on concrete floors.

Cables of various types better be laid in separate trays. Strict requirement in this situation is to install underground cabling support systems in the hot aisles DCs. In this case, the heat generated by cables will not heat the cold air moving in equipment. And if you have a need for access to the cables, then picked up floor tiles for access circulation is not disturbed airflow in the cold passage. How and when laying cable lines on top of the premises, the organization of underground cable channels requires coordination specialists scs with other services data center. Although, as already mentioned, ideally under raised floor should not take anything other than cold air, in reality, there is often lie and other engineering systems. When data center managers to make a decision about where to lay cable route – over the mounting racks or under the raised floor, they must take into account such factors as the specific design of the building, the need for cooling equipment and provision of aesthetic characteristics. Selection criteria – The set, and they can contradict each other. But regardless of the method chosen, including the simultaneous use of cable channels of both spaces, the problem with a circuit other communications services, data center you are actually guaranteed.

Zakarniznaya Lights

Me as a manager and designer of the project redevelopment own apartment, it was decided (of course, after consultation with all its inhabitants!) Set in a kitchen-living room as an additional coverage light. It seemed a relatively simple affair, a situation, however, is complicated by the high ceilings in an apartment and a lack of knowledge of technological intricacies of the issue. Originally, it was necessary explore options for technical implementation of the required design – zakarniznoy illumination. After careful examination of the proposals has developed the following picture: Fluorescent lamps; Neon; led Rope; Lamps bulbs. Option incandescent dropped for two reasons.

Firstly, a significant heating temperature – thereby suspended ceiling, which was planned to establish backlight, very quickly would come into disrepair (patches, etc.). and I did not mention the very likely risk of fire throughout this construction. Second, the cost of its name has been impossible, and in our tough times each kilowatt-hour counts. Of the remaining cost-effective options for implementing planned – zakarniznoy lighting – I just do not like neon. Mainly because of the need to install long, gas-filled glass tubes, clear of fragility system inspired some fears. After studying the last two options was chosen led Rope.

He was much more convenient in terms of retention and did not ask for a high voltage (several kilovolts) as is the case with neon or fluorescent lamps. In addition, in the latter case, expansion joints could get uneven lighting. led Rope is a flexible plastic cord (often called flexible light cord), in which increments of about 2.5 cm placed LEDs. They did not warm up, for the same reason, this illumination is 5 times more economic than conventional bulbs, which we are so accustomed to. Power supply to such illumination – box a little more than a matchbox. We are, incidentally, is also used to regularly change the flat bulb, while the life of zakarniznoy backlit with LEDs, or as it is often called, led still impressive. On prices for flexible light cord desired color showed considerable scatter (when it comes to stores in St. Petersburg); prices, as always, depend on the country of manufacture and ambitions of the seller. As a result, had to stop on the led duralight Chinese production price of the light cord was 800r for 10m. In LEDs, however, have one serious drawback – very limited choice of colors glow. Most common now is the cool white color, and only recently began appearing in stores led Rope warm white glow. He is somewhat more expensive than the "cold", but the eye is more pleasant. Options with other colors (yellow, green, red) were not considered in principle. It remained to decide what to use as a ledge – it's lights. About this (as well as some finer points of installing it to stretch ceiling) – In the second part of the article.

Corrosion Protection

It's no secret that annual losses due to corrosion of 10-15% of the total steel produced. In some cases, the metal structure or its separate parts can simply be replaced with time. However, such a procedure cost to the customer in a rather tidy sum. Moreover, in most cases, the design simply can not be replaced or its installation is expected that it should last for 20-30 years without a substantial overhaul. Most of such a problem faced in chemical industries or areas with a fairly aggressive environment – for example, if the object is located on the coast.

In such cases, to save the situation may be the optimal selection of corrosion coatings. Anticorrosive materials and coatings designed to prolong the life of various structures and protect them from aggressive environmental influences. Are useful for the effective protection corrosion materials for epoxy or polyurethane with special fillings. Type of binder and filler type, suitable for this environment are well documented in the standard ISO-12944. There are all types of environmental divided into groups.

And for each group recommended certain materials. If we talk about protecting structures from the external environment, for such purposes are best suited materials based on polyurethane. For areas with not very aggressive conditions suitable anticorrosive primer based on polyurethane, which dries quickly, can be applied even at low temperatures and has excellent protective properties. The top layer can be used in polyurethane enamel or anticorrosive material "liquid plastic", is also based on polyurethane. Such a system – polyurethane primer plus polyurethane enamel – is the simplest, but at the same time, effective enough. But there are situations where the protective properties of the materials should have higher performance. For these purposes there is a material that is called "cold galvanizing". Material for polyurethane with zinc powder performs a function similar to hot dip galvanizing. Zinc in this case acts as a sacrificial metal. "Cold zinc is applied to the prepared metal surface as prime paint. After drying, it is recommended to close the zinc coating with polyurethane enamel to prevent access of oxygen to zinc. Thus all the zinc will only react with the metal. Such coating is ideal for protecting metal structures and equipment in hostile environments.

Modernization As A Form Of Investment Activity

The upgrade is a device to refurbish built premises. Upgrading involves improving stairwells, elevators, refuse chutes, the implementation of balconies and loggias, the replacement of certain types of supporting structures (walls, stairs, floors, roofs) improving the architectural expression of the building, rebuilding roofs, insulation and soundproofing of buildings, equipment missing types of engineering equipment or increase its level, conversion of external systems (except trunk). Isolation of modernization as a component of the reconstruction made on the basis of works in the existing dimensions. When upgrading rising consumer quality, the reconstruction may change as the dimensions and functional purpose of buildings and structures. For example, the modernization of the following types of works: conversion of unexploited space in the attic exploited, bringing all elements of the building to modern regulatory requirements for thermal resistance (thermal upgrading), protection of buildings against noise and vibration, enhancing the architectural expression or replacement type facades of buildings; device balconies, loggias, porches, terraces, full replacement of wooden floors on fire-resistant, complete replacement of windows and doors on the product with heat engineering characteristics meeting the regulatory requirements, the device window openings and separate entrances basements, renovations to heating systems, conversion of ventilation equipment systems, hot and cold water, outer and inner fire water supply, sewerage, gas supply to the accession to the existing backbone networks, systems, fire protection device, translate the existing electricity grid to increased computational load. The assignment of a particular type of work to repair the (current or capital) and reconstruction, including modernization in the first place should be for features and functions operation of the facilities upon completion of works, ie or a restoration quality (if it will repair both current and capital), or the acquisition of new qualities (if it will be reconstructed, including the upgrade).