Category: News

Industrial Ventilation Systems In Car Parks

Current examinations of car park industrial air systems have revealed some alarming shortcomings, especially in the application of jet fan systems. These failings vary from poor design with major areas of the car park left unventilated by designs which should control smoke in the event of fire but have no chance of doing so.

Popular belief is that due to the amount of time that jet fan systems have been around and the fact that they now represent around 95% of recent installations, people feel that it cannot be too difficult to design these systems themselves and then simply buy the fans. Even systems designed and fitted by supposed industry specialists have been found to be lacking in their effectiveness.

ventilation systemsMany issues have been identified as lack of knowledge regarding fan installations or simply a misunderstanding of regulations. An example of a jet fan system installed and investigated involved, quite correctly, two axial main extract fans installed in parallel discharging into a common plenum; however they were installed without non-return dampers fitted to the fans. If one of these fans were to fail, the result would not only be in the loss of performance from the failed fan, but also severely reducing the effectiveness of second fans performance due to air short-circuiting through the failed fan.

Furthermore, there have been circumstances where the fire strategy has been inadvertently or deliberately disregarded. For example, the fire strategy of one project called for an enhanced smoke control system to guarantee that access lobbies were free of any smoke contamination in the case of a fire ever occurring in the car park. In actuality what was installed was an extremely rudimentary smoke clearance system which bore no resemblance to a smoke control system. The particularly worrying issue in this example is that this was missed by the client, the building control officer and consulting engineer; it was only recently discovered by the fire officer and we were called in.

How does this happen? Fundamentally due to cost, and a “design & build” culture in which the original objectives determined by the architect, consulting engineer and fire engineer have been disregarded or forgotten against a background of Value Engineering.

This is not to say there is anything wrong with Value Engineering when the original strategy and objectives are adhered and met; however these can and are easily overlooked and conveniently forgotten when the contractor, guided by an enthusiastic pseudo-specialist, is led to believe that tremendous savings can be made by cutting some corners. It can all seem highly believable when informed by a ‘specialist’ that the system is ‘code compliant’ and fully meets all the required building regulations, and this may very well be the case. However what has been ignored is the enhanced design specification agreed upon at the original design stage and against which relaxations were granted by building control regarding the requirement for sprinklers and the ventilation of access lobbies.

After a period of time, even be it only a few months, the error may be identified, at which stage the wonderful savings first purported become nothing but a drop in the ocean in comparison to the costs to correct the issue; these delays can not only delay the handover of the building but if the shortcomings are not identified, the safety and lives of the occupants of the building could be put in danger.

How can this be prevented in the future? It boils down to understanding how the original system design was developed and why. If the professed savings offered by alternative suppliers of specialist systems sound too good to be true, then it should be a warning sign and more than likely is. In this case, discussions with the parties involved in developing the original system design should be consulted to gain a comprehensive understanding of the design objectives that must be obtained and system requirements which must be met.

Article Source: http://EzineArticles.com/7154661

Help Your Brain

Your Brain Loves Fat

60 percent of your cerebrum is comprised of fat, so the sort of fat that you have to devour must be of a high caliber. Your mind is particularly enamored with omega-3 fats, yet it additionally needs omega-6 fats. These fundamental fats are extremely fragile and inclined to harm, so you have to expend a flawless mix.

2. Your Brain Loves Water

The biggest segment in your body is water, so you have to expend enough perfect, uncontaminated water to keep your body and mind all around hydrated.

3. Your Brain Loves Protein

Protein is vital for building muscle, as well as for keeping your neurons talking adequately. On the off chance that you don’t eat enough great quality protein, your neurons fight to talk to each other, and you could think that its hard to focus, prompting memory challenges. Protein ought to be natural on the off chance that it originates from a creature, and you have to consolidate grains with vegetables to make finish protein on the off chance that you are a vegan.

4. Your Brain Is The Greediest Organ In Your Body

Your cerebrum is the most vitality hungry organ in your body. It needs a consistent, stable supply of good quality starches. Vegetables and low-sugar natural product give great, new wellsprings of starches for managed vitality generation, while prepared and refined sugars give here and now vitality fixes.

Pick entire grains and vegetables for managed vitality discharge as well, and your cerebrum will appreciate ideal vitality supply. A wide assortment of crisp create will likewise supply vitamins and minerals that your cerebrum needs to work ideally.

5. Your Brain On Coffee

Caffeine supplies a speedy surge of vitality to your mind, since it invigorates the arrival of adrenaline. This influences you to feel vivacious to begin with, however this before long decreases, abandoning you needing another “fix”. Attempt one of the immense natural teas accessible, or pick plain antiquated water, with a dash of lime. A great many people needn’t bother with another pressure kick, and this is precisely what espresso gives.

6. Your Brain Needs The Right Carbohydrates

Consider what you long for. In the event that it is chocolate and lollies, you are presumably encountering insecure glucose levels as a result of prepared starch utilization, so you need to wean yourself from these tricky addictions. At the point when individuals are drained from absence of rest, continuous pressure and feeling overpowered, they typically go after a brisk sugar-fix to give them a spurt of vitality.

An awesome green drink, brimming with supplement rich mixes, can get your blood glucose more steady, and prompt less longings. Eating the correct fats helps colossally as well, since when they are provided with the correct fats, your cells deliver vitality all the more proficiently. This keeps your vitality levels high, which prompts less vitality droops and chocolate-fixes.