ESTRUCTURA D ACERO

http://www.youtube.com/watch?feature=player_embedded&v=QCJP-B6mXsw

http://www.youtube.com/watch?feature=player_embedded&v=PLduNxlqQQQ
http://www.youtube.com/watch?feature=player_embedded&v=PsIOdugok84

http://www.youtube.com/watch?feature=player_embedded&v=X2pLOFNzMjo
http://www.youtube.com/watch?feature=player_embedded&v=6-wH8VpgIIc

http://www.youtube.com/watch?feature=player_embedded&v=zJlkZ_R6wIw
http://www.youtube.com/watch?feature=player_embedded&v=iN4ig1i-AKw


TEORIA

http://www.slideshare.net/suryfer/tema-1-acero-10501936
http://www.slideshare.net/davidRive/fabricacin-y-uso-del-acero
http://www.slideshare.net/luisk_44/estructuras-deacero