DEIALS ANU SPECIFICATIONE Foundatio$($n$)/($W$)$all $-$ Canada Mortgage and Housing Corporation $($CMHC$)$ Foundatio$($n$)/($W$)$all $-$ Canada Mortgage and Housing Corporation $($CMIIC$)$ Designer Checklist $-$ A continuous flashing with a drip$-$edge projection is specified. Builder Checklist $-$ Joints in the flashing are lapped at least $100$ mm $(4$ in$.),$ sealed and, in the case of membrane flashings, free of fish mouths. $-$ Flashings are sealed to the substrate. $-$ If flexible membrane flashing is used without a metal drip edge. exposed edges are not cut off. $-$ The inslallation of flashings, ai$($r$)/($v$)$apour barrier membrane and insulation is coordinated with masonry work. $-$ Before foundation layout is finished, the foundation alignment in the plan and the elevation is coordinated with veneer location and satisfies construction tolerance requirements for CSA masonry and concrete standards. $-$ Maximum brick corbel is one third the thickness of the brick. $-$ Morlar joints are tooled on the exterior side of the brick veneer to provide a concave joint. $-$ Weep holes extend through the head joint and bed joint. $-$ Mortar joints are flush on the outside face of concrete block to provide a level surface for installing the airfvapour barrier membrane. $-$ All penetrations of the ai$($r$)/($v$)$apour barrier membrane are sealed. $-$ The insulation is securefy in contact with the back$-$up wall. $-$ End dams are provided at changes in the wall assembly and the ends of the flashing are turned up and watertight. $-$ The air space is reasonably clear of mortar droppings. $-$ Mechanical fasteners for irsulation are installed at minimum spacing of one every $400$ mm $(16$ in$.).-$ The ai$($r$)/($v$)$apour barrier membrane overlaps the through$-$wall flashing atBCIT: Architectural & Building Technology

Course: BLDC $1050-$ Materials and Materials $1$

Building Technology $-$ BVSS

DETAILS AND SPECIFICATION: $(2)$ On the sketch, show the path of water within the wall system and how it would exit

the cavity.

Please use a color other than black. Indicate the direction of flow for the water.

$(2)$ What is the recommended spacing for weep holes vent holes in the brick veneer? Why

is this different from the required spacing?

$(2)$ Identify one method of mechanically attaching and one method of supporting the

brick veneer to the structure.

$(2)$ Why are both metal and flexible flashings used at the base of the brick veneer? Why

is it important that the flexible flashing overlap the metal?