The strength and deflection of putlog as easy supporting girder, and the ledger is over and supported by putlog.
横杆按照简
梁进行强度和挠度计算，大横杆在横杆
上面。
跳板横木；建筑横木The strength and deflection of putlog as easy supporting girder, and the ledger is over and supported by putlog.
横杆按照简梁进行强度和挠度计算，大横杆在横杆上面。
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