Beams are cambered to().
A、A.increase their strength
B、B.provide drainage from the decks
C、C.relieve deck stress
D、D.All of the above
A、A.increase their strength
B、B.provide drainage from the decks
C、C.relieve deck stress
D、D.All of the above
A、increase their strength B、provide drainage from the decks C、relieve deck stress D、All of the above
A、A.face plates B、B.bottom longitudinals C、C.longitudinal deck beams D、D.transverse deck beams