03.020.0221 Wall system | Stone veneer wall, transitional, w/ brick backing & struct. steel framing



This wall system illustrates an example of a mid to high-rise transitional, or hybrid masonry wall. This type of construction was common between 1890-1940 and varies widely as it was a part of the transition from mass masonry load-bearing wall construction to steel skeleton frame construction. In this example the steel structural system supports floor loads and is encased in concrete and a 12” multi-wythe brick wall with stone veneer that encloses the building. The 4” stone veneer is tied into the masonry by metal z-strap anchors and at the top course by a metal cramp whereas the common brick is used as the backing and predominant wall infill. The anchors engage with the veneer stone by penetrating a kerf or channel that is cut into the top surface of each panel. The mass of masonry deflects bulk water penetration but is understood to take on a percentage of moisture that is free to evaporate slowly from the mortar joints on either side of the wall over time.

Comments

Post a Comment

Popular posts from this blog

01.030.0332 Base of Wall | Anchored Brick Veneer, CMU Backing, CMU Foundation

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.
Read more

02.120.0215 Grout pour at top of concrete masonry wall

This detail shows accommodations for a top-of-wall grout pour. Grout is poured into the top course bond beam via a grout bag or funnel through 6" x 6" holes cut into the corrugated decking every 6" on center. Midway between the pour holes are 4" dia. inspection holes to verify grout placement and flow. The concrete masonry wall is secured to the suspende slab above with angles on both sides of the wall welded to a steel plate, which is anchored to the bottom of the flutes of the decking above. The angles are secured to the masonry with self tapping screws. The top of the masonry is held back about 1 1/2" from the plate above. This detail as shown is intended to illustrate a general concept or method of construction. Details that show different or modified concepts or methods can be of equal validity and should not be excluded from consideration. this detail shall not be used for construction without the approval an signature of a licensed design professional. T...
Read more

10.030.0733 Cornice and parapet rebuild | Terra cotta, extruded

This detail illustrates a modern rebuild strategy for replacing existing architectural terra cotta (TC) cornice, balustrade parapet, and accessory units. The existing TC is replaced with new extruded TC units, installed not filled, with weep holes at the underside of each overhanging unit; each secured with new stainless-steel anchorage. In restoring and rebuilding these types of historic wall systems, moisture mitigation is critical to their long-term preservation and performance. Moisture management measures in this detail include horizontal skyward-facing joint treatment of sealant or lead T-caps, an integrated flashing system installed in the cornice, and stainless-steel through-wall flashing under the coping. The flashing system in the cornice includes a self-adhering flashing secured by a termination bar with continuous sealant, a stainless-steel drip edge, and weeps in the vertical joints. Accessible existing structural steel is also protected by cleaning and coating with a cor...
Read more