The Ontario Building Code | Design of Adjustable Steel Columns
9.17.3.4. design of Adjustable Steel columns
(1) Where the imposed load does not exceed 36 kN, adjustable steel columns shall conform to CAN/cgsb-7.2, "Adjustable Steel columns".
(2) Adjustable steel columns other than those described in Sentence (1) shall be designed in accordance with Part 4.