Based on the clue 'a structural material named for its small wood fra...', what is the answer?

Based on the clue 'a strong grip may be compared to this clamping ite...', what is the answer? Based on the clue 'a strong leg an empty container are elements in t...', what is the answer? Based on the clue 'a strong motion accelerograph a type of this devic...', what is the answer? Based on the clue 'a strong rope on a sailing vessel or a chief suppo...', what is the answer? Based on the clue 'a structural type of geology 9', what is the answer? Based on the clue 'a structure for venting gas or smoke', what is the answer? Based on the clue 'a structure of crossed wooden strips not something...', what is the answer? Based on the clue 'a structure that crosses a river', what is the answer?