In the Late Classic Period Yaxchilan was one of the most powerful Maya cities along the course of the Usumacinta, with Piedras Negras as its major rival. Architectural styles in subordinate sites in the Usumacinta region demonstrate clear differences that mark a clear boundary between the two kingdoms.
Answered by The Community. Making the world better, one answer at a time. Steel is not usually considered a composite, as it is macroscopically homogeneous. However, some steel types, including classical iron-carbon steel, can be considered as metal-matrix composites, as they contain a second phase... sometimes.
1 Composite beams have higher stiffness, thus it has less deflection that steel beams. 2  Composite beams can cover for large space without the need of any intermediate columns. 3  Composite construction is faster because of using rolled steel and pre-fabricated components than cast-in-situ concrete.