|
我亲眼见的比较少，目前为止只亲眼见到一座建筑结构采用耐候钢。, y- L5 v9 Q& N0 l. Y
接触过一些资料，比如什么时候不适用耐候钢" A3 ~$ r7 F4 Z! w" C( P
• If the atmosphere contains concentrated corrosive industrial or chemical fumes.如果大气中富含有腐蚀性的工业或化学烟雾。9 r; t! s5 F0 n4 U
• If the steel is subject to heavy salt-water spray or salt-laden fog.如果钢材暴露于浓度较大的盐水喷雾或含盐雾。! b% T2 u, P0 W( w6 o% |2 R
• If the steel is in direct contact with timber decking; timber retains moisture and may have been treated with corrosive preservatives.# s6 Q+ Q4 f) ~ ?- `1 M2 J6 o
如果钢材直接接触木桥面，木材保有水分，并可能已被防腐剂处理。! ~' J) V( T# w8 ]7 y1 o, _
• If the steel is used for a low urban-area bridge or overpass that creates a tunnel-like configuration over a road on which deicing salt is used. In this situation, road spray from traffic under the bridge causes salt to accumulate on the steel.
. s1 c: w9 L+ o Y如果钢是用在使用融雪剂的道路隧道桥或立交桥之下的城市桥梁。在这种情况下，道路交通向下方桥梁喷洒导致盐积聚在钢材上。- \2 s F8 g, r
• If the location has high rainfall and humidity or is constantly wet. This situation is rare in Texas.# ^$ ]8 ~9 @7 |/ B; t
如果该桥址有高雨量和湿度，或者是长久潮湿。" v/ [, Q) H, r+ X! b$ f- ]
• If the structure provides low clearance (less than 8 to 10 feet) over stagnant or slow-moving water.0 |) {' b8 [, y* i2 d4 ^* c
•如果结构跨越死水或缓慢移动的水的净空较小（小于8到10英尺）。
3 k5 E6 g+ N- H3 ~2 x* ?- z; m! h8 M& h1 M; f; Y! n
| 
提升卡
置顶卡
沉默卡
喧嚣卡
变色卡
显身卡
