Under normal circumstances the windowsill windowsill the height of the ground is more appropriate? Professional point of the Oh!
500-550mm high, do not be too high, do not be too short!
If the bay window is wide and wide windowsill (width greater than 0.22m of the windowsill), and less than 0.45m, for people to climb standing, the guardrail or fixed sash protection height from the windowsill began to calculate the protection height of not less than 0.9 M, fence to set the window.
For the floating window of the height of the ground, the state has the relevant provisions. According to the "Civil Building Design General" GB50352-2005 provides: ordinary residential windowsill should not be less than 0.9m, if less than 0.9m, should take protective measures, such as the use of fence or in the lower part of the window set the equivalent of railings height of the protective window , Protection height of not less than 0.9m.