High-rise buildings

These can be used for copper in all applications and must be to BS 864, Part 2, or BS 2051, Part 1. In ducts, all such joints must be accessible within the duct or chase. Not to be used within vertical ducts in high-rise buildings. 

Minimum water velocities should be maintained in the upper floors of high-rise buildings where air may tend to come out of solution because of reduced pressures. High velocities should be used in down-return mains feeding into air-separation units located at a low level in the system. Table 27.10 can be taken as a guide. Water velocities shown in Tables 27.9 and 27.10 are indicative parameters only on the one hand, to limit noise problems and... 

A new building of the school of nursing consists from two parts. One is a high-rise building for professor s rooms which has 2,800 m2 of floor area... 

Standard Operational Guideline Response to High-Rise Buildings... 

Confirmed Fire/Smoke Condition High-Rise Building... 

All of the following actions should be taken by the first arriving engine companies at the scene of a confirmed fire in a high-rise building EXCEPT... 

Firefighters have determined that they require the use of the aerial ladder to investigate the third floor of a high-rise building that is on fire. What should they do next ... 

Figures 4.15 and 4.16 show the nonlinear current characteristics of a personal computer and a computer monitor, respectively. Tables 4.7 and 4.8 provide the harmonic content of the currents for the two devices. The predominance of the third and fifth harmonics is evident. The current THD for both devices exceeds 100%, as the result of high levels of individual distortions introduced by the third and fifth harmonics. The total current drawn by a personal computer and its monitor is less than 2 A, but a typical high-rise building can contain several hundred computers and monitors. The net effect of this on the total current harmonic distortion of a facility is not difficult to visualize.

In high-rise buildings in the winter when the cold air on the outside is heavier than the conditioned air on the inside, the chimney effect tends to pull in ambient air at ground elevation, and this cold air adds an additional load to the building s heating system. Eliminating the chimney effect can lower the operating cost by approximately 10%. 

Chimney effects in high-rise buildings can be eliminated by using the proper pressure controls. 

If you are mobility impaired and live or work in a high-rise building, have an escape chair. 

Polysulphide sealants fulfil the requirements of expansion joints in concrete structures such as bridges, subways and high-rise buildings where a high level of joint movements occur. They are suitable for compression movement, extension movement and shear movement in butt joints as well as overlap joints. The only joint in which a sealant can accommodate more than +50% movement is in lateral shear in an overlap joint. In all other joint designs the sealant cannot take more than 25% move-... 

Outstanding resistance is offered to weathering, ozone, UV light and attack by chemicals present in industrial atmospheres. These sealants are also used in high-rise buildings where subsequent maintenance is a difficult task. The service temperature for these sealants normally ranges between -30°C and 90°C. 

The major application fields of urethane-modified isocyanurate foams lie in budding aj lications, such as warehouses, high-rise buildings and residential houses. In the USA, laminates are one of the major applications of urethane-modified foams. Figure 35 shows an example of the laminate process (72). 

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