Fig A |-------------------------------------------------------------- |-----10h12-10h12--------------10h12-10h12--------------------- |--10-------------8------8--10-------------8---------8--------- |---------------------10---------------------10-8-10----------- |----------------------------------------------------------- |-----10h12-10h12----10--------10h12-10h12----10------------ |--10-------------8------8--10-------------8------8--------- |----------------------------------------------------------- |--------------------------------------------------------------------- |-----10h12-10h12----10--------10--------10h12-10h12------------------ |--10-------------8------8--8---------10--------------back to fig A--- |---------------------------------10---------------------------------- _______________________________________________________ Contribuição: wilimar junio ruas(juniorruas@ig.com.br)