楼板(JLB)长度mm厚度mm荷载N/m2100125150175200最大长度240024002700310035004000260023302630303034303950280022602560296033603900300022002500290033003850320021302460283032303780340020602430276031603730360020002400270031003670380019502350265030503620400019002300260030003530420018402240256029603480440017802180252029203430460017202120248028803400480016602060244028403360500016002000240028003340)