Abstract: A hanger for a cementitious building unit including: a first hanger component having: a body; and at least one first interlocking portion arranged in (a) predetermined position(s) on the body of the first hanger component a second hanger component including: a body; at least two second interlocking portions arranged in (a) predetermined position(s) on the body of the second hanger component; and an overhanging portion adapted to abut a building support surface wherein the first interlocking portions and second interlocking portions are complimentary to each other and provide for vertical height adjustment of the first hanger component in relation to the second hanger component; and the first hanger component also has at least one first connecting portion for a tension tie for anchorage within the cementitious building unit.