MASONRY. masonry wall construction. chapter 10 SUBJECT

Transcription

1 SUBJECT DATE MASONRY masonry wall construction FALL 2012 PROFESSOR MONTGOMERY chapter 10

2 MASONRY WALL CONSTRUCTION historic + modern

3 MASONRY WALL CONSTRUCTION historic + modern

4 this week objective: to explore methods of construction of exterior masonry walls and their relationship to the primary structural system types of masonry walls spanning systems for masonry bearing wall construction detailing masonry walls special considerations

5 TYPES OF MASONRY WALLS: MASONRY LOAD BEARING WALLS REINFORCED MASONRY WALLS POSTTENSIONED MASONRY WALLS MASONRY CAVITY WALLS COMPOSITE MASONRY WALLS COMPOSITE CAVITY MASONRY WALLS MASONRY WALL CONSTRUCTION types of masonry walls

6 MASONRY WALL CONST. load bearing masonry walls

7 MASONRY WALL CONST. load bearing masonry walls

8 MASONRY WALL CONST. load bearing masonry walls

9 MASONRY WALL CONST. load bearing masonry walls

10 MASONRY WALL CONST. reinforced masonry walls

11 MASONRY WALL CONST. reinforced masonry walls

12 MASONRY WALL CONST. reinforced masonry walls

13 MASONRY WALL CONST. posttensioned masonry walls

14 FIRST GOAL OF CAVITY: STOP MOISTURE PENETRATION SECOND GOAL: THERMAL SEPARATION AND INSULATION MASONRY WALL CONST. cavity masonry walls

15 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 MASONRY WALL CONST. cavity masonry walls

16 WEEP HOLES: ALLOW WATER TO ESCAPE FROM CAVITY - LOCATED AT CAVITY BOTTOM ABOVE FLASHING MASONRY WALL CONST. cavity masonry walls

17 COMPOSITE MASONRY WALLS: WALLS OF MORE THAN ONE WYTHE WITH DIFFERENT FACING AND BACKUP MATERIALS. MASONRY WALL CONST. composite solid masonry walls

18 IMPROVED THERMAL PERFORMANCE: INSERT RIGID BOARD INSULATION INTO CAVITY W/ AT LEAST 1 AIRSPACE MASONRY WALL CONST. composite cavity masonry walls

19 INNER WYTHE OF A COMPOSITE CAVITY MASONRY WALL PERFORMS AS STRUCTURAL ELEMENT OUTER WYTHE SERVES AS A NONSTRUCTURAL FACING OR VENEER MASONRY WALL CONST. composite cavity masonry walls

20 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. MASONRY WALL CONST. composite cavity masonry walls

21 MASONRY WALL CONST. composite cavity masonry walls

22 MASONRY AS: LOAD BEARING STRUCTURAL SYSTEM MASONRY WALL CONST. MASONRY AS: INFILL + VENEER WITHIN STRUCTURAL FRAME (NON-STRUCTURAL) structural role of masonry walls

23 MASONRY AS LOAD BEARING STRUCTURAL SYSTEM MASONRY WALL CONST. structural role of masonry walls

24 MASONRY AS: INFILL + VENEER WITHIN STRUCTURAL FRAME MASONRY WALL CONST. structural role of masonry walls

25 CAVITY + BRICK VENEER ADDED ON TOP OF CMU BACKUP MASONRY WALL CONST. structural role of masonry walls

26 MASONRY WALL CONST. spanning systems: ordinary joist

27 MASONRY WALL spanning systems: steel + concrete decks

28 MASONRY WALL spanning systems: steel + concrete decks

29 MASONRY WALL CONST. detailing: exterior wall

30 MASONRY WALL CONST. detailing: flashing

31 MASONRY WALL CONST. detailing: parapet

32 MASONRY WALL CONST. detailing: exterior wall

33 MASONRY WALL CONST. detailing: exterior wall

34 MASONRY WALL CONST. thermal insulation

35 MASONRY WALL CONST. thermal insulation

36 MASONRY WALL CONST. special considerations

37 MASONRY WALL CONST. surface divider joints

38 MASONRY WALL CONST. movement joints

39 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 durability