Transcript Today’s Masonry Wall A SYNERGY IN SYSTEMS Name: Provider #: Title: Course #: 11/7/2015 Jeremy Douglas, CSI, CCPR H 366 Today’s Masonry Wall: Synergy in Systems HBJ01WS.

Today’s Masonry Wall
A SYNERGY IN SYSTEMS
Name:
Provider #:
Title:
Course #:
11/7/2015
Jeremy Douglas, CSI, CCPR
H 366
Today’s Masonry Wall: Synergy in Systems
HBJ01WS
This program is registered with the AIA/CES for continuing
professional education. As such, it does not include content that
may be deemed or construed to be an approval or endorsement
by the AIA of any material of construction or any method or
manner of handling, using, distributing, or dealing in any
material or product. Questions related to specific materials,
methods, and services will be addressed at the conclusion of
this presentation.
Hohmann and Barnard, Inc. is a registered
provider with The American Institute of
Architects Continuing Education Systems.
Credit earned on completion of this program
will be reported to CES Records for AIA
members. Certificates of completion for nonAIA members available upon request.
COURSE DESCRIPTION
This course demonstrates the synergies
between various components required in
masonry construction today by detailing their
interfaces. Topics will include masonry
anchors, flashings, and air barriers.
© 2013 HOHMANN & BARNARD, INC.
OBJECTIVES
 Identify key components in masonry construction
and how they relate to one another
 Discuss various product types and how they may
or may not work in various installation applications
 Discuss how the introduction of air barrier systems
has changed our ability to use certain products or
installation methods
 Demonstrate the importance of detailing at the
interface as critical to the performance of the
masonry wall system
Cavity Wall Construction
PROBLEMS
 Expansion and Movement
• Remedied through wall reinforcing and
anchoring systems
 Water Penetration
• Remedied through flashings, drainage plane,
and air barrier system
WALL REINFORCING
Truss Reinforcement
Ladder Reinforcement
WALL REINFORCING
Side Rod
Standard
9 ga. Side Rods x 9 ga. Cross Rods
Extra Heavy
3/16" Side Rods x 9 ga. Cross Rods
Super Heavy Duty
3/16" Side Rods x 3/16" Cross Rods
Cross Rod
WALL REINFORCING
Mill Galvanizing
HDG
Stainless Steel
INTEGRATED ANCHORING
COMPRESSED LEG HOOKS
STANDARD 3/16” DIAMETER HOOK (PINTLE)
ACI-530 Code specifies a maximum eccentricity of 1 ¼”.
The use of traditional 3/16” diameter wire hooks has been
a primary reason for this limitation.
COMPRESSED LEG HOOK (PINTLE)
Precision .020” inside radius at the bend
Compressed legs are
machine-tooled to be
exactly centered between
the still rounded outer edges
The modifications result in superior resistance
to lateral loads, up to 100% greater than the
industry standard, while still being fabricated
from 3/16” diameter wire.
INTEGRATED ACHORING
Welded
Loops
Closed Loop
Truss System
Wire Clip
3/16” Box Tie
Continuous Wire
Optional Lock Washer
holds insulation in place
ADJUSTABLE JOINT REINFORCEMENT
LOOP-WIRE
TRUSS REINFORCEMENT
EYE-WIRE
TRUSS REINFORCEMENT
• Allows in-plane vertical and horizontal movement of masonry
wythes, while restraining tension and compression.
• Horizontal eyelets easily clogged with mortar
• Loops welded shut to maintain allowable tolerance and system
integrity.
• Often relies on workmanship to assure proper
engagement of pintle within allowable limits of
eccentricity
• Vertical configuration of loops not susceptible to
clogging with mortar as construction progresses.
• No guarantee that improperly installed pintle
(beyond its allowable eccentricity) will not
separate from reinforcement
• No horizontal movement
• Eyelets not welded shut
• Foolproof. Mason can not install wire tie beyond
allowable eccentricity.
• Vertical loops have 2 ¼” adjustability. Ideal for
econo or utility bricks.
DEFINING AIR BARRIERS vs. VAPOR BARRIERS
There are two ways for
moisture to infiltrate the
building envelope.
1. Diffuse flow is a
gaseous vapor that
passes through all
materials.
2. Channel flow is a more
serious concern,
resulting from breaches
in the building envelope.
Channel Flow
Diffuse Flow
DEFINING AIR BARRIERS vs. VAPOR BARRIERS
 An air barrier MUST resist
air leakage or channel flow at
all pressure levels through
the wall assembly.
 A vapor barrier MUST resist
the movement of vapor
through diffusion.
ALL AIR BARRIERS ARE
NOT VAPOR BARRIERS
Channel Flow
Diffuse Flow
DEFINING AIR BARRIERS vs. VAPOR BARRIERS
Air barriers or permeable
membranes allow the wall
to “breathe” and offer
designers more flexibility
in their placement within
the wall assembly.
The ability to make the
barrier system totally
continuous should be the
main criteria for the
Channel Flow
location.
Diffuse Flow
DEFINING AIR BARRIERS vs. VAPOR BARRIERS
Vapor barriers or
non-permeable
membranes have a
specific location within
the wall.
Vapor barriers MUST
be completely
continuous to properly
perform their function.
Channel Flow
Diffuse Flow
COMPARISON
LIQUID VS. SHEET MATERIALS
Wall System
Steel/Sheathing
Concrete/ICF
CMU
Liquid
Sheet
✔
✔
✔
✔
✔
✖
DETAILING
AIR/VAPOR BARRIER INTEGRATION
Areas and situations that
require detailing in an
air/vapor barrier system
include:
• Intersections of different
materials
• Expansion joints
• Elevation changes
• Inside & outside corners
• Door & window openings
INSTALLATION
KEYS TO A SUCCESSFUL AIR/VAPOR BARRIER
The detail between an
air/vapor barrier and the
roofing system is
critical.
CONTINUITY WITH THE
ROOFING SYSTEM
Liquid Applied vs. Sheet
ANCHORING SYSTEM COMPATIBILITY
KEYS TO A SUCCESSFUL AIR/VAPOR BARRIER
Does the anchoring
system protect the
integrity of the air/vapor
barrier and does the
air/vapor barrier seal
around the anchoring
system?