Door window is the main component of the building, its quality stand or fall, affect the use function of project quality and building directly. According to the State Council " regulation of construction project quality " , " Shenzhen special economic zone (level of noise of urban district environment) applicable area differentiates " concerned regulation, the design that door window builds in building a project with respect to the our city now, production, construction, supervise wait for a problem to inform as follows:
One, the sound insulation management of the window outside the building
Our city freeway, quick way and trunk road red line two side inside 100 meters of limits, all building, rebuild, noise insulation factor of the window outside the building that extend residence, school, hospital faces road a side is not gotten under " sound insulation of air of the window outside the building and its detect method " the 4 grade level in GB8485-87 standard (≤ of ｗ of 30 ≤ R 35) ; Second dry road and spur track red line two side inside 50 meters of limits, the noise insulation factor of afore-mentioned windows outside building a side that face a road is not gotten under GB8485-87 standard medium 5 grade level (≤ of ｗ of 25 ≤ R 30) .
2, the design management that builds door window
(one) the project that design unit refers designs a file, answer to ask with safety according to using, indicate of door window fight function of leakage of wind pressure function, water seepage function, air and index of sound insulation function.
(2) building door window basically suffers force staff, when using monolayer glass, answer relative to deflection ≤ L ／ 130; Should use double deck or multilayer when glass, answer relative to deflection ≤ L ／ 180.
(3) assure safety to avoid water of door window leakage, the window outside the structure that uses in our city project, water seepage function is not gotten under 250 P ａ ; Fight wind pressure function to press " standard of building construction load " GBJ-9 computation, lowest fights wind pressure index to be not gotten under 2500 P ａ . Under the window outside the building of afore-mentioned index, forbid to be used in the project.
3, the production that builds door window, construction controls government
(one) door window suffers force member to should decide via computation or experiment, profile of the window outside aluminium alloy is sectional and main wall of place getting power is large must not be less than １ . 4 ｍ ｍ ; Profile of aluminium alloy door is sectional and main wall of place getting power is large must not be less than 2. 0 ｍ ｍ . To assure function of the airtight of window of aluminium alloy door, watertight, answer to be in dozen of glue in profile juncture.
(2) the lumen of component part profile such as the window frame of window of model steel door, casement, must the regulation according to standard of JG ／ T3014, use what handle via galvanization to enhance profiled bar, the wall that enhances profiled bar is large must not be less than １ . 2 ｍ ｍ . With the bolt that enhances profiled bar at securing, every profiled bar is not gotten little at 3, its span must not be more than 300 ｍ ｍ . The hardware of window of model steel door must install enhancing profiled bar to go up. Window of model steel door and mouth of a cave must use stretch connection.
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