sustainablity in masonary
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Welcome
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Proudly presents
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Learning Objectives:
1. Analyze general design methods for
masonry construction that create sustainablewall systems affecting the structural integrity
and internal welfare of its inhabitants.
2. Compare the difference between and
importance of suitable anchoring system.
3. Assess proper flashing and moisture
control techniques.
4. Determine how to address seismic and
severe wind load factors in masonry wall
systems.
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ED+C Magazine is a Registered Provider with The
American Institute of Architects Continuing EducationSystems. Credit earned on completion of this program will bereported to CES Records for AIA members. Certificates ofCompletion for non-AIA members are available on request.
This program is registered with the AIA/CES for continuingprofessional education. As such, it does not include contentthat may be deemed or construed to be an approval orendorsement by the AIA of any material of construction or anymethod or manner of handling, using, distributing, or dealing
in any material or product. Questions related to specificmaterials, methods, and services will be addressed at theconclusion of this presentation.
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EDUCATION PROVIDER NAME
1
Sustainability in Mason Construction
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Green BuildThe future will be green, or not
at all. This truth lies at the heart
of humankinds most pressing
challenge: to learn to live inharmony with the Earth on a
genuinely sustainable basis.
-Sir Jonathon Porritt
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Hohmann and Barnard, Inc.
Sustainable Anchors
Our anchoring products
lend structural support
and integrity to the
buildings in which they
are incorporated
thereby allowing for
years of durability and
preservation of our
planets natural
environmental
resources.
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Masonry buildings are extremely durable.The University of Southern California is anexample where measures were taken toensure proper building practices.
Masonry buildings are extremely durable. Their greatest
enemies are commonplace: water and movement caused by
thermal expansion. When confined water freezes, it expands
with tremendous pressure, causing cracking, crazing, spalling
and deterioration of masonry surfaces. Movement of wall
systems results in the cracking of masonry, which then provides
easy entry for moisture.
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Building Movement
Movement of wall systems resultsin the cracking of masonry, which
then provides easy entry for
moisture.
Effloresence
Salt and mineral deposits leftbehind on brick or masonry
surfaces.
Spalling
If saturated when frozen, pressure
from expanding ice can fracture
brick, block, or stone.
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Rust to Steel ComponentsMoisture penetrating
into the cavity can rust
and damage steel
framing components
including brickanchoring systems and
joint reinforcements.
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Anchor OptionsOver time, ties of various sizes,configurations, and
adjustability have been
developed for load-bearing
masonry, often of different
materials; anchor masonry
veneer to backing systems
other than masonry;
and connect composite
masonry walls.
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AnchoringTypically, wall ties perform
four primary functions
between a wythe of brick and
its backing or another wythe
of masonry.
Provide a Connection
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Anchoring Provide a connection
Transfer lateral loads
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Anchoring Provide a connection
Transfer lateral loads
The ability to handle
differential movement or insome cases, restrict
movement
Air barrier interface
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Multi Wythe Masonry Construction
Concrete Block Back-up
Drywall Construction with Metal Studs
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Concrete Block Back-up
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Reinforcement: Truss or Ladder
Truss Reinforcement
Ladder Reinforcement
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Reinforcement Finishes
Black Basic-No Coating
Mill Galvanized
ASTM A641-(0.10 oz. Zinc Coating/FT )
Hot Dip Galvanized
ASTM A153 Class B2-(1.5 oz. Zinc Coating/FT )
Stainless Steel Type 304 or 316
ASTM A580
Stainless Steel is Recommended for Maximum
Protection Against Corrosion
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Weights
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 RodSide Rod
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Installation
6 OVERLAP
SIZE = 2 LESS THAN CMU
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Anchoring Walls:Are you confident enough to use eye wire?
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Tru-Joint Feature
The Tru-Joint featurewas developed formasons to easily
maintain a standard3/8 joint thickness,
without concern forexcessive wire
buildup when eyesare welded ontobackup jointreinforcement.
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To add Sustainability and Integrity to yourMasonry Wall, Specify a Closed Loop System
When brickcoursing is notwithin 1 loop
dimension, useBent-Box Tie foran additional 1
adjustability
Optional Lok Washerholds insulation in place
3/16 Box Tie
WeldedLoops
WeldedLoops
ClosedLoopTrussSystem
Wire Clip
1
1
Continuous Wire
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Adjustable Joint
Reinforcement Comparison
Allows In-Plane Vertical and Horizontal
Movement of Masonry Wythes, WhileRestraining Tension and Compression.
Loops Welded Shut to Maintain AllowableTolerance and System Integrity.
Vertical Configuration of Loops NotSusceptible to Clogging with Mortaras Construction Progresses.
Foolproof. Mason Can NotInstall Wire Tie BeyondAllowable Eccentricity.
Vertical loops have2 adjustability.Ideal for Econoor Utility Bricks.
Horizontal Eyelets Easily Clogged with Mortar
Often Relies on Workmanship to AssureProper Engagement of Pintle WithinAllowable Limits of Eccentricity
No Horizontal Movement
Eyelets NOT Welded Shut
No Guarantee that ImproperlyInstalled Pintle (Beyond ItsAllowable Eccentricity)will not Separate
from Reinforcement
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DrywallConstruction
with Metal
Studs
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The Challenge:
To prevent long-term
deterioration of the
insulation or wall
board due to
moisture, while also
preventing separation
of the wire tie from
the anchor.
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The Solution: Specify Details
Specify an anchor withrib-stiffened pronged legs
and back plate to sealsheathing from air andmoisture infiltration.
While maintainingintegrity of air barrier.
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100% Protection against
separation of wire tie
from anchor.
(See ACI-530-02 Sec. 6.2.2.5.5.3)
Specify:
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Specify:
Built-in screw track
for correct alignment
of screw into stud.
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Specify:
3 3/8 of vertical
adjustability
Takes guesswork out
of the laborers
hands.
Allows for easy
installation after
insulation is in place.
3-3/8
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Specify:
A 14 gauge anchor
capable of
withstanding a 100#
load in both tensionand compression
without deforming
or developing play
in excess of 0.05.
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Specify:
A cross-linked
polyethylene foam
tape to create a
pressure sealbetween anchor and
sheathing for added
protection.
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For Seismic, High Wind Load and
Wide Cavity Conditions
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Seismic
Considerations
Closed Loop System
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IBC 2000 Seismic Zones
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SHEET METALS ADVANTAGES DISADVANTAGES
Stainless Steel Durable, Impervious, Hard Difficult to bendHigh installation costs
Must be preformed at factory
Not easily field-adapted
Usually requires steel
workers for installation
Cold-rolled Copper, Durable, flexible, impervious, Cold-rolled stains surfaces
Lead-coated Copper easier to form and solder than where water runs off; damaged
stainless; Lead-coated does by excessive flexing; Copper
not stain corrodes and leads to gradual
change in surface color
COST: $ 9.00 -$ 10.00 PER SQ. FT
COST: $ 9.00 - $ 10.00 PER SQ. FT
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COMPOSITES ADVANTAGES DISADVANTAGES
Copper Laminations Easier to form and join More easily torn than metal,
than metals. asphalt degrades in sunlight
and can ooze under extreme heat
COST: $ 7.00 - $ 8.00 PER SQ. FT
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COMPOSITES ADVANTAGES DISADVANTAGES
EPDM Not susceptible to UV rays, Requires adhesives to bondCorrosion resistant, Good to substrate and requires double
Tear and puncture resistance sided tape to seal laps, More
difficult to work with than
rubberized asphalt, resulting
in higher labor costs
Rubberized Flexible at low temperatures Affected by UV rays
Asphalt Flashing Excellent tear/puncture Cannot form 45System resistance; self seals around degree drip edge;
stainless steel drip edge; loses adhesive properties
easy to install below 40 degrees;
Rubberized-asphalt component
can ooze out to the exterior
of the building in warm
temperatures.
PVC Not recommended for masonry
(Polyvinyl Chloride) flashing applications
COST: $1.00 - $1.50 PER SQ. FT.
COST: $ 4.00 - $ 5.00 PER SQ. FT (including drip edge)
COST: $ 3.00 - $ 4.00 PER SQ. FT
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*Elvaloy is a registered trademark of
the DuPont Company
THERMOPLASTIC ADVANTAGES DISADVANTAGES
Elvaloy Membrane Flexible at low temperatures. N/A
Not susceptible to UV.
Self-adhesive, easy to install,
seamless preformed corners and
end dams available.
Extremely tough, with excellent
impact and tear/puncture resistance.Highly resistance to oils and will
repel most chemicals
Compatible with most silicone and
urethane sealants.
Suitable for thru-wall or surface-
mount construction.
COST: $4.00 - $5.00 PER SQ. FT (with drip edge)
$3.00 - $4.00 PER SQ. FT (w/o drip edge)
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Flashing Locations
Shelf Angle
Outside Corner
Cavity WallBase Flashing
Shelf Angle Close-Up
Inside Corner
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Flashing Summary
Flashing must work as a system and include all
components such as termination bar, drip plates, mortar
collection device, etc.
Determine most compatible flashing system with wall
design.
Compatibility with sealants and adjacent materials is
critical.
User-friendly flashing systems for field personnel are
important
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HOHMANN AND BARNARD, INC.
30 RASONS CT.
HAUPPAUGE, NY 11788
p: 800-645-0616
f: 631-234-0683
www.h-b.com
www.h-b-edu.com
www.h-b.com/green
www.homes.h-b.com
CHRIS BUPP
p: 717-779-4943
This concludes The American Institute of Architects ContinuingEducation Systems Program
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