lo_pak

回復 9# fy789

"Here’s a link to some pictures from an airline bulletin board showing flooding at O’Hare Airport in Chicago from the remnants of Hurricane Ike.  This plane is taxiing through 18″ of water (I can’t imagine a Cessna doing that!).  O’Hare had 6.64″ of rain on 9/13, another 1.44″ on 9/14.  From 9/4 to 9/14, O’Hare had 12.59″ of rain.

Which means:
on 9/13, 168mm in 24 hr!! as compared to 50mm in 24 hr at Beijing, go figure...

Even in Vancouver YVR, 80mm in 24Hr (10 year return), no probelmo... . You may see a minor flood when it goes to 110mm.

In facilities like the Beijing Airport, if the sewer design can't handle 50mm in 24hr, it's totally unacceptable... (it's +/- equivalent to the 2 year return in YVR).

MoiRhapsody

北京真係落得50mm?
睇片好似倒水咁倒，天都黑晒喎，會唔會係呢50mm落得急去唔切水？

lo_pak

回復 12# fy789

I urge you better check "your" rainfall data before you conclude...

rockypath

This is the data I saw on Chinese website.

据官方公布的数据，前日全市雨量超过100毫米的有120平方公里，局部地区出现极端天气（超过70毫米/小时），石景山模式口小时最大降雨量128.9毫米，累计日降雨量213.4毫米，是建站以来的极值。从分布看，城市西部降雨量明显高于东部。

MoiRhapsody

黑雨警告都係70mm per hours
北京真係冇幾何落咁大雨，全年總降雨就得700mm左右。
睇下今年仲會唔會再有咁大雨，如果有成個北京排水系統要搞到好似南方城市毀得，唔怕一萬，至怕萬一嘛。

MoiRhapsody

民眾既忍耐力越黎越低，黎多幾次呢啲大獲野啲民怨一發不可收拾。

Guy

O yes.... I will keep extra condoms in my room