12 masonry wall construction - city tech openlab
TRANSCRIPT
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SUBJECT
DATE PROFESSORFALL 2012 MONTGOMERY
MASONRYmasonry wall construction
chapter 10
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MASONRY WALL CONSTRUCTIONProfessor Montgomery arch 1130
historic + modern
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MASONRY WALL CONSTRUCTIONProfessor Montgomery arch 1130
historic + modern
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this week
types of masonry wallsspanning systems for masonry bearing wall construction
detailing masonry walls special considerations
objective: to explore methods of construction of exterior masonry walls and their relationship to the primary structural system
Professor Montgomery arch 1130
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MASONRY WALL CONSTRUCTION types of masonry walls
TYPES OF MASONRY WALLS:
• MASONRY LOAD BEARING WALLS
• REINFORCED MASONRY WALLS
• POSTTENSIONED MASONRY WALLS
• MASONRY CAVITY WALLS
• COMPOSITE MASONRY WALLS
• COMPOSITE CAVITY MASONRY WALLS
Professor Montgomery arch 1130
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MASONRY WALL CONST. load bearing masonry wallsProfessor Montgomery arch 1130
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MASONRY WALL CONST. load bearing masonry wallsProfessor Montgomery arch 1130
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MASONRY WALL CONST. load bearing masonry wallsProfessor Montgomery arch 1130
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MASONRY WALL CONST. load bearing masonry wallsProfessor Montgomery arch 1130
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MASONRY WALL CONST. reinforced masonry wallsProfessor Montgomery arch 1130
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MASONRY WALL CONST. reinforced masonry wallsProfessor Montgomery arch 1130
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MASONRY WALL CONST. reinforced masonry wallsProfessor Montgomery arch 1130
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MASONRY WALL CONST. posttensioned masonry wallsProfessor Montgomery arch 1130
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MASONRY WALL CONST. cavity masonry walls
FIRST GOAL OF CAVITY: STOP MOISTURE PENETRATIONSECOND GOAL: THERMAL SEPARATION AND INSULATION
Professor Montgomery arch 1130
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MASONRY WALL CONST. cavity masonry walls
CAVITY MASONRY WALL
REINFORCING SPANS ACROSS THE CAVITY
BRICK VENEER IS NON STRUCTURAL
MASON MUST KEEP THE CAVITY CLEAN AND FREE OF MORTAR AND OTHER MATERIALS
Professor Montgomery arch 1130
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MASONRY WALL CONST. cavity masonry walls
WEEP HOLES: ALLOW WATER TO ESCAPE FROM CAVITY - LOCATED AT CAVITY BOTTOM ABOVE FLASHING
Professor Montgomery arch 1130
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MASONRY WALL CONST. composite solid masonry walls
COMPOSITE MASONRY WALLS: WALLS OF MORE THAN ONE WYTHE WITH DIFFERENT FACING AND BACKUP MATERIALS.
Professor Montgomery arch 1130
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MASONRY WALL CONST. composite cavity masonry walls
IMPROVED THERMAL PERFORMANCE: INSERT RIGID BOARD INSULATION INTO CAVITY W/ AT LEAST 1” AIRSPACE
Professor Montgomery arch 1130
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MASONRY WALL CONST. composite cavity masonry walls
INNER WYTHE OF A COMPOSITE CAVITY MASONRY WALL PERFORMS AS STRUCTURAL ELEMENT
OUTER WYTHE SERVES AS A NONSTRUCTURAL FACING OR VENEER
Professor Montgomery arch 1130
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MASONRY WALL CONST. composite cavity masonry walls
STEEL TIES CONNECT ACROSS THE CAVITY TO LINK THE INNER WYTHE OF CMU BLOCK W/ BRICK VENEER.
THE TIES PROVIDE LATERAL SUPPORT AGAINST WIND & SEISMIC FORCES.
Professor Montgomery arch 1130
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MASONRY WALL CONST. composite cavity masonry wallsProfessor Montgomery arch 1130
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MASONRY WALL CONST. structural role of masonry walls
MASONRY AS: LOAD BEARING STRUCTURAL SYSTEM
Professor Montgomery arch 1130
MASONRY AS: INFILL + VENEER WITHIN STRUCTURAL FRAME (NON-STRUCTURAL)
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MASONRY WALL CONST.MASONRY AS LOAD BEARING STRUCTURAL SYSTEM
Professor Montgomery arch 1130structural role of masonry walls
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MASONRY WALL CONST.Professor Montgomery arch 1130
MASONRY AS: INFILL + VENEER WITHIN STRUCTURAL FRAMEstructural role of masonry walls
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MASONRY WALL CONST.Professor Montgomery arch 1130
CAVITY + BRICK VENEER ADDED ON TOP OF CMU BACKUPstructural role of masonry walls
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MASONRY WALL CONST. spanning systems: ordinary joistProfessor Montgomery arch 1130
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MASONRY WALL spanning systems: steel + concrete decksProfessor Montgomery arch 1130
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MASONRY WALL spanning systems: steel + concrete decksProfessor Montgomery arch 1130
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MASONRY WALL CONST. detailing: flashing @ exterior wallProfessor Montgomery arch 1130
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MASONRY WALL CONST. detailing: flashing Professor Montgomery arch 1130
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MASONRY WALL CONST. detailing: flashing @ parapet Professor Montgomery arch 1130
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MASONRY WALL CONST. detailing: flashing @ exterior wallProfessor Montgomery arch 1130
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MASONRY WALL CONST. detailing: flashing @ exterior wallProfessor Montgomery arch 1130
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MASONRY WALL CONST. thermal insulationProfessor Montgomery arch 1130
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MASONRY WALL CONST. thermal insulationProfessor Montgomery arch 1130
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MASONRY WALL CONST. special considerationsProfessor Montgomery arch 1130
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MASONRY WALL CONST. surface divider jointsProfessor Montgomery arch 1130
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MASONRY WALL CONST. movement jointsProfessor Montgomery arch 1130
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wrap up masonry wall construction dominates in NYC
low rise: load bearing systems make sense
high rise: panelized cavity wall construction
complex detailing to address moisture penetration, thermal insulation, and movement due to expansion, contraction
aesthetic considerations: continuous masonry wall or panelized system
timeless: power and durabilityProfessor Montgomery arch 1130