ber 2010 on sanitary and epidemiological requirements for the operation of the PC, space per workstation PC users at any location is 4.0 square meters. Area per job laptop users and modern computers with LCD screens is 2.50 square meters [10] .you calculate the area (Sspec.) Premises attributable to one person as follows:
(5.1)
- room space
- area occupied by the bulky equipment and furniture
- the number of people working simultaneously on the premisesthis basis, it can be noted that the calculations agree with the regulatory requirements.
5.1.2 Ergonomic solutions for workplace organizationmaintain work ability and prevent the development of PC user diseases necessary organize workplaces that meet the requirements. Productivity increases from 8 to 20 percent with proper organization of the workplace.the presence of a high table and chairs, inadequate growth of learners, use a height adjustable footrest. An important element of work place for PC user is chair.design of work chair must ensure the maintenance of sound working posture when working on PC allows you to change position in order to reduce tensing the muscles of neck and shoulder area and back to prevent the development of fatigue. Type of office chair should be chosen taking into account the growth of user, nature and duration of work with PCair equipped with PC, basic size suited to the growth of students with shoes. Replacement of chairs for stools or benches is not allowed. In this case, the room used chairs fully meet the above standards.
5.2 Identifying hazardous and harmful factors. Creating sustainable lighting
working with PC can be potentially dangerous and harmful factors whose impact on human body can bring them harm and lead to injuries.lighting in room designed to work with PC is created in the presence of both natural and artificial lighting. Insufficient light leads to severe eye strain, fatigue, short-sightedness, poor quality of work, increasing the marriage. Bright light irritates the eye retina, dazzles the eyes tire quickly, growing industrial injuries.lighting facilities staffed with computer engineering require high demands on hygiene as well as technical issues. Properly designed and executed lighting provides a high level of efficiency, has a positive psychological effect, increases in labor productivity [11] .calculation job is lead to choosing lighting system and defining the required number of fixtures, type and placement. The process of programmer work is slow in such conditions when natural lighting is insufficient or absent.
. 3 Noise protection
the workplace of PC user sources of noise are generally speaking people, outside noise, computer, printer and ventilation equipment. They make quite some noise, so the room is enough to use sound absorption.
Table 5.2normalized sound pressure levels and sound. Here are indicators of standardized noise levels in too.
Sound pressure level, dB, in octave bands with center frequencies, HzSound levels and sound levels equivalent, DBA631252505001000200040008000716154494542403850 the level of noise in the workplace showed that the actual sound pressure levels in dB in the octave bands with center frequencies of 31.5, 63, 125, 250, 500, 1000, 2000, 4000, 8000 Hz. And it complies with the standard. s present methods of protection against noise. Construction and acoustic methods of protection against noise by construction law and regulations are:
sound design envelope, seal around the perimeter of the chapels of windows and doors
- sound-absorbing structures and screens
silencers, sound-absorbing lining
Reducing the noise penetrating into the space from outside is realized by sealing around the perimeters of the chapels of windows and doors. Acoustic absorption is an acoustically treated surface to reduce the intensity of reflected waves by converting sound energy into heat. Sound absorption is quite effective measure to reduce noise. The most pronounced sound-absorbing properties are fibrous and porous materials such as fiber plate, fiberglass, mineral wool, polyurethane cellular plastic, porous polyvinyl chloride, etc.absorbing lining of these materials must be placed on the ceiling and upper walls. Absorption maximum is reached when wall not less than 60% of the total area of ???? the enclosing surfaces of the room.
5.4 Calculation of ventilation
conditioning systems should be installed so that neither warm nor cold air is not directed at anyone. There is recommended to create a dynamic environment with certain differences of indicat...
