Appeal 2007-2596
Application 10/370,634
a tubular structure configured and dimensioned to
provide a continuous void through a concrete structure, said
void being unfilled;
first and second anchor members disposed at opposite
ends of said tubular structure; and
at least one stainless steel strand extending through said
tubular structure and secured under tension between said anchor
members, said anchor members being mounted to at least
substantially close and maintain said void.
13. A post-tensioned concrete structure, comprising:
a concrete member;
a tubular structure defining a void through said concrete
member;
at least one tensioned stainless steel strand passing
through said void and anchored at opposite ends of the member,
wherein said void is unfilled.
Thus, claim 1 is directed to a system for post-tensioning concrete
structures. The system has a tubular structure that provides an unfilled void
through a concrete structure, first and second anchor members at the ends of
the tubular structure, and at least one tensioned stainless steel strand that
extends through the tubular structure. The anchor members are mounted
such that they substantially maintain and close the void.
Claim 13 is directed to a post-tensioned concrete structure that
contains certain elements of the system recited in claim 1. Specifically,
claim 13’s post-tensioned structure has a tubular structure that defines a void
through the concrete member, and at least one tensioned stainless steel
strand that passes through the void and is anchored on opposite sides of the
member.
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