IMI SketchUp Models

This wall system illustrates a ventilated rainscreen facade of terra cotta panels with a backing of concrete masonry. The CMU backing may be grouted and reinforced per the structural design. The continuous air/moisture/vapor barrier over the CMU, including treatmant of vertical control joints, provides resistance to air and moisture. The engineered, adjustable aluminum track system is anchored to the backing with structural clip angles, and is separated with thermal isolators to avoid heat transfer. Continuous insulation resides in the wall cavity providing excellent thermal control. The joints between terra cotta panels are left open providing back ventilation for the pressure equalized wall system. The large module terra cotta cladding units provide a durable rainscreen with a contemporary architectural appeal.

This detail illustrates a masonry window head condition with a fixed steel lintel angle anchored to the concrete masonry backing as often used for long-span openings such as ribbon windows. The lintel angle's position may be adjusted vertically via slotted holes and horizontally via shims. The CMU is supported across the opening by a two-course grouted, reinforced masonry lintel integral to the block. A vertical control joint in the CMU is treated with transition membrane which 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. An optional cavity drainage insert above the lintel protects the weep vents at the bottom of the cavity from becoming obstructed. The steel lintel is protected with thru-wall flashing returning vertically at each end to form an end dam. The durable drip edge guards against moisture reentry and may be notched to avoid excessively thic

This detail illustrates a composite mortar repair installed in an existing masonry unit (e.g. stone, terra cotta, cast stone, etc.) where a previous spall, multiple-cracks, or delamination existed. Composite mortar repairs are cementitious materials and fine aggregates (e.g. sand) blended with water. For composite mortar repairs to be durable and resilient it is important to take into consideration the following: Material properties of the repair mortar should match the original masonry unit receiving the repair, including strength, porosity/density, water absorption, and vapor permeability; Preparation of the repair area should include keyed perimeter edges, uniform depth, surface roughness, clean, and stainless steel supplemental anchorage; Installation of the composite mortar should include surface moisture content as required, base coat, initial and finish coats, finishing to match profile, and curing as required; Quality control should include repair mockups prior to start of work

This detail, based on TCNA method SR614, illustrates a tiled steam shower or steam room assembly with wood or metal stud framing and cement board walls and ceiling and a mortar bed floor. The ceiling slopes 2" per foot to prevent dripping of condensate. The bonded waterproof membrane must be continuous and must adequately limit vapor transmission. If bonded waterproof membrane has water vapor permeance greater than 0.5 perms and if steam shower is in continuous use, a secondary vapor retarder is required, which laps over the shower pan membrane. If steel studs are used, they must be 20 gaguge or heavier and spaced 16" o.c. maximum to minimize wall deflection. Shims may be required behind the backer board to account for thickness of the shower pan membrane, supports for grab bars and other accessories affixed to the studs, and to ensure the walls are flat. The floor comprises a pre-pitched mortar bed sloped 1/4" per foot to drain, shower pan membrane tied into the two-

This detail, based on TCNA method SR613, illustrates a tiled steam shower or steam room assembly with masonry or concrete structure, mortar bed walls, and a mortar bed floor. The ceiling slopes 2" per foot to prevent dripping of condensate. The bonded waterproof membrane must be continuous and must adequately limit vapor transmission. If bonded waterproof membrane has water vapor permeance greater than 0.5 perms and if steam shower is in continuous use, a secondary vapor retarder is required, which laps over the shower pan membrane. The mud walls and ceiling are keyed into a scratch coat with embedded lath and anchored to the structure with pencil rods and anchor wire. The floor comprises a pre-pitched mortar bed sloped 1/4" per foot to drain, shower pan membrane tied into the two-stage drain assembly, and a reinforced mortar bed. The tile is adhered with a bond coat of modified thinset mortar.