IMI SketchUp Models

This detail illustrates a low roof terminating into a higher wall, The tall interior single-wythe CMU wall transitions into an anchored veneer wall above the roof line. The open web steel joists of the roof structure bear on the tall CMU wall via a steel bearing plate on a CMU bond beam. The roof system terminates with counterflashing engaging with a sheet metal receiver within the masonry wall providing moisture protection for the wall and roof assemblies while allowing each assembly to be independent of the other. Insulation and air/moisture/vapor barrier are continuous across the masonry and roof systems providing defense against thermal and moisture transfer. A system of flashing and weeps above the roof line allows moisture to exit the drainage cavity, and an optional cavity drainage insert protects the weep vents from becoming obstructed.

This detail illustrates a masonry window sill condition. The concrete masonry backing is treated with blocking at the perimeter of the opening which is wrapped with transition material, which in turn engages with the air/moisture/vapor barrier in the field of the wall providing continuous resistance to air and moisture. Continuous insulation offers excellent thermal control. The masonry sill is anchored to the brick jamb at the ends, and longer sills may require intermediate anchors. The detail incorporates a vertical brick expansion joint and a vertical control joint at the block backing. A system of flashing and weeps below the sill allow moisture to exit the drainage cavity. The rigid thru-wall flashing material is self-supporting across the cavity. The flashing returns vertically at each end termination to form an end dam. The durable drip edge guards against moisture reentry and may be notched to avoid excessively thick laps.

01.030.0332 Base of Wall | Anchored Brick Veneer, CMU Backing, CMU Foundation This detail illustrates a base of wall condition with a partially grouted and reinforced concrete masonry foundation. Below grade waterproofing and an air/moisture/vapor barrier above grade provide continuous resistance to air and moisture, and continuous insulation offers excellent thermal control. The flexible thru-wall flashing is supported across the cavity with rigid insulation and grout. An optional cavity drainage insert protects the weep vents from becoming obstructed. The detail incorporates a vertical brick expansion joint and a vertical control joint at the block backing. Finish grade is held away from the wall with a gravel mowing strip protecting the masonry against moisture. A system of flashing and weeps at the base allow moisture to exit the drainage cavity. The durable drip edge guards against moisture reentry and may be notched to avoid excessively thick laps.

This detail shows a stone threshold separating a ceramic tile floor from an adjacent carpet finish, with a slight change in elevation. The threshold is adhered to the substrate with a bond coat of latex modified thinset mortar.  The tile floor is set in a mortar bed and bonded to the substrate.  Flexible sealant and backer rod separate the tile floor from the threshold.  This detail is based on Tile Council of North America (TCNA) Method TR611.

This is an in-progress model of a full height wall section, illustrating face brick veneer anchored to concrete masonry backing. This overview shows six common conditions: Base of wall, Window sill, Window head, Shelf angle, Roof-wall interface, and Top of wall.

This detail illustrates a a shelf angle projected from the concrete masonry backing with a system of standoff brackets anchored to the backing. The use of these brackets allow the shelf angle to not be in contact with the backing, which would otherwise tranfer heat across the cavity.  The brackets project the shelf angle out the required distance to adequately support the brick veneer, and insulation is allowed to run in between and behind the brackets.  There is a horizontal expansion joint below the shelf angle to allow for vertical expansion of the brick veneer. There are full, uncut brick above and below the shelf angle.  The thickness of the horizontal leg of the shelf angle and the width of the expansion joint below will result in a horizontal expansion joint wider than 3/8 in.  If this expansion joint is in a prominent place, its excessive width may be visually objectionable; however if it is higher than eye level, it may go unnoticed.  Skilled BAC bricklayers are able to stay o

This detail illustrates a a shelf angle mechanically fastened to the concrete masonry backup with anchor bolts at regular intervals. There is no provision for thermal break other than the shims behind the shelf angle.  The primary function of the shims is to bring the angle out the required distance to adequately support the brick veneer. There is a horizontal expansion joint below the shelf angle to allow for vertical expansion of the brick veneer.  A course of lipped brick, usually prefabricated, resides above the shelf angle to tighten up the the joint width visible below the shelf angle.  The downturn in the lipped brick requires the flashing to make a few bends as it traverses the wall.  The flashing protects the shelf angle, and weep vents allow moisture to exit the wall. A drip edge is recommended in this application, to further protect the steel angle and to ensure water does not travel back into the wall beneath the flashing.

This detail illustrates a a shelf angle mechanically fastened to the concrete masonry backup with anchor bolts at regular intervals. There is no provision for thermal break other than the shims behind the shelf angle.  The primary function of the shims is to bring the angle out the required distance to adequately support the brick veneer. There is a horizontal expansion joint below the shelf angle to allow for vertical expansion of the brick veneer.  There are full, uncut brick above and below the shelf angle.  The thickness of th horizontal leg of the shelf angle and the width of the expansion joint below will result in a horizontal expansion joint wider than 3/8 in.  If this expansion joint is in a prominent place, its excessive width may be visually objectionable; however if it is higher than eye level, it may go unnoticed.  Skilled BAC bricklayers are able to stay on bond and achieve required elevations by slightly adjusting the width of the bed joints in the veneer above and below

This detail illustrates a a shelf angle mechanically fastened to the concrete masonry backup with anchor bolts at regular intervals. There is no provision for thermal break other than the shims behind the shelf angle.  The primary function of the shims is to bring the angle out the required distance to adequately support the brick veneer. There is a horizontal expansion joint below the shelf angle to allow for vertical expansion of the brick veneer.  A course of lipped brick, usually prefabricated, resides below the shelf angle to tighten up the the joint width visible below the shelf angle.  The upturn in the lipped brick coincides roughly with the outside face of the horizontal leg of the angle, enabling the flashing to continue horizontally out of the wall. The flashing protects the shelf angle, and weep vents allow moisture to exit the wall. A drip edge is recommended in this application, to further protect the steel angle and to ensure water does not travel back into the wall bene