Tham khảo tài liệu 'thiết kế cứa sổ và cửa đi', kỹ thuật - công nghệ, kiến trúc - xây dựng phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | SKYLIGHTS AND DOME ROOFLIGHTS with solid or ventilated curb 60 X 60 X X 80 X 80 X X 90 X 90 X X X X X X X X X X X round domes 60 90 100 120 150 180 220 250cm dia. 50 X X 50 X X 60 X 60 X 60 X 90 X X 90 X 90 X Normal dome rooflight B A B c D 40 60 X 60 X 70 90 X 90 X 80 X X X X X X Pyramid rooflight A rooflight area B roof opening 72 X X 72 X X 75 X X 76 X X X North light dome Domes skylights coffers smoke vents and louvres as fixed or moving units can be used for lighting and ventilation and for clearing smoke from rooms halls stair wells etc. All these can be supplied in heat-reflecting Plexiglas if required. By directing the dome towards the north in the northern hemisphere sunshine and glare are avoided - @. The use of high curb skylights - @ will reduce glare because of the sharp angles of incidence of the sunlight. Dome rooflights used for ventilation should face into the prevailing wind in order to utilise the extraction capacity of the wind. The inlet aperture should be 20 smaller than the outlet aperture. Forced ventilation with an air flow of 150-1000m3 h can be achieved by fitting a fan into the curb of a skylight - @. Dome rooflights can also be used for access to the roof. Attention should be given to the aerodynamic extraction surfaces of smoke exhaust systems. Orientating each extraction unit at an angle of 90 from the adjacent one will allow for wind coming from all directions. Position to leeward windward if pairs of extraction fans are to be mounted in line with or against the direction of the prevailing wind. Smoke extraction .
