engineering steel construction
2007-06-02 05:04:04 · 2 answers · asked by db 1 in Science & Mathematics ➔ Engineering
It's the joint between the vertical support and the more-or-less horizontal roof section of portal type contruction, which resembles frame house construction. See the ref.
Edit: As the ref. points out, a knee joint can be strengthened by gusseting or designed so the two joined members can be braced by steel reinforcements. Either method enables the knee to carry moment loads.
2007-06-02 05:25:16 · answer #1 · answered by kirchwey 7 · 0⤊ 0⤋
A portal knee or a 'knee joint' is where the rafter and the column are connected at the edge of a building. Usually you would connect using a haunch connection on the underside of the steel members to take the moment, however with a knee (I think) the rafter sits on top of the column and is designed as simply supported so the moment is 0. If you have it I would refer to the Greeno & Chudley Building & Construction book for details.
2007-06-02 17:03:20 · answer #2 · answered by Anonymous · 0⤊ 0⤋