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Presents. INNOVATIONS IN WATERPROOFING SYSTEMS. An AIA Continuing Education Program Credit for this course is 1 AIA/CES Learning Unit for HSW credit. Course Title: INNOVATIONS IN WATERPROOFING SYSTEMS Course Number: POL07A.

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slide1

Presents

INNOVATIONS IN WATERPROOFING SYSTEMS

An AIA Continuing Education Program

Credit for this course is 1 AIA/CES Learning Unit for HSW credit.

Course Title: INNOVATIONS IN WATERPROOFING SYSTEMS

Course Number: POL07A

an american institute of architects aia continuing education program
An American Institute of Architects (AIA) Continuing Education program

Approved Promotional Statement:InfoSpec 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 non-AIA members available on request.

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 or Ron Blank & Associates 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.

an american institute of architects aia continuing education program3
An American Institute of Architects (AIA) Continuing Education program

Course Format: This is a structured, face to face course.

Course Credit: 1 Health Safety & Welfare (HSW) learning unit (LU)

Completion Certificate:A copy is sent to you by email upon request. When you fill out the Form B please indicate if you need one. Also please make sure the information you provide is legible. Send email request to: carol@ronblank.com

Design professionals please make sure and indicate request of certificate of completion when filling out the Form B at course conclusion. All AIA and non- AIA members who request a certificate of completion will be sent a copy of your certificate to the email address you provided in the Form B. Please make sure that when print your information that it is legible. If we can not read your writing we can not process your credit.

course objectives
Course Objectives

After completing this course the participants

will have a better understanding of the

following:

  • Waterproofing Solutions that Protect the Owner’s Investment By…
    • Improving Indoor Air Quality
    • Protecting Your Concrete Floors And Walls
    • Preserving Structural Integrity
85 of vapor barriers fail

What do we mean ?

"85% of Vapor Barriers Fail"

Vapor barriers are a well known problem area in the design and construction field.

The problem comes from damage during construction.

There is significant disagreement on what materials to use, where to place vapor barriers, and how to specify construction methods to avoid damage.

slide7

Where does the "85 %” failure rate come from?

      • The specific quote is taken from a consultant's report to the city of Los Angeles Department of Building and Safety:
        • "…With respect to HDPE (vapor barriers), please be aware that under normal field applications it has been observed to experience a high failure rate reported to be as high as 85% in some cases."
      • The full report, along with a listing of nine large projects known to be leaking and a Los AngelesTimes article, can be found at this weblink:

http://saveballona.org/techpages/boot.html

slide9

Need More Proof ?

  • ASTM E 1643 - 98 SPECIFICATION:
  • Standard Practice for Installation of Water Vapor Retarders Used in Contact with Earth or Granular Fill Under Concrete Slabs
  • FROM THE EXCERPTS ABOVE, IT LOOKS LIKE:
  • 1. Everybody on the ASTM committee agrees that these vapor barrier materials are likely to fail.
  • 2. The committee does not agree on a solution.
slide10

The following slides include:

    • I. A definition of vapor barriers
    • II. A discussion of current vapor barrier standards
    • III.A series of construction photographs which demonstrate the potential for construction abuse and damage to vapor barriers
    • IV. Extracts from materials standards, construction specifications, and engineering bulletins:
      • ASTM
      • Portland Cement Association (PCA)
      • American Concrete Institute (ACI)
slide11

Typical Commercial Grade Vapor Barrier

Source: Portland Cement Association (#12958)

slide12

DEFINITION OF VAPOR BARRIERS

  • The industry uses various terms for vapor barriers:
        • Vapor Retarders
        • Vapor Barriers
        • HDPE
        • Polyethylene Film
        • Reinforced polyethylene films
        • Membranes, etc.
  • Most of the industry considers the terms to be interchangeable.
  • This presentation will use the term "Vapor Barrier"
slide13

Vapor Barriers are virtually impermeable polyethylene films which, according to

  • ASTM E 1643
    • "...provide a method of limiting water vapor transmission upward through concrete slabs on grade…”
slide14

Vapor Barrier Configuration

Adapted from PCA Concrete Floors on Ground Engineering Bulletin 075, Fig. 3.2

One Typical Vapor Barrier Configuration

slide15

Historically, few construction projects used vapor barriers. However, use has increased in recent years because of concerns about:

      • Damage to flooring above the slab by moisture
      • Concerns about toxic mold
      • Intrusion of chemical vapors and other hazardous contaminants from underground
slide16

PROPERTIES FOR COMMERCIAL GRADE VAPOR BARRIERS

Note: Puncture resistance requirements are expressed in GRAMS, instead of pounds. (2200 grams = 4.85 pounds, 475 grams = 1.05 pounds)

slide17

Notice how thin this vapor barrier is

Source: Portland Cement Association (#V2/144_5)

slide18

On most large projects, steel reinforcement (REBAR) is installed over the vapor barrier.

The purpose of rebar is to minimize future cracking of the concrete slab, and to reduce warping or curling.

Source: www.constructionphotographs.com (#a00305)

slide19

Rebar installation includes cutting, which creates both sparks and sharp edges.

Source: www.constructionphotographs.com (#204602)

slide20

Rebar must be fastened atintersections to keep it evenly spaced.

In this photo, the rebar is being welded together. If this jobhad used a vapor barrier, holes could have been burnt.

Source: www.constructionphotographs.com

slide21

After rebar installation is complete, there are usually many areas where sharpedges touch the vapor barrier.

Source: www.constructionphotographs.com (#a00306-section zoom)

slide22

There is also a lot of foot traffic onjobsites, as well as equipment.

Source: Portland Cement Association (#82_5a)

slide23

Sometimes larger equipment isdriven over the vapor barrier.

Source: www.constructionphotographs.com (#a00305-section zoom)

slide24

For this placement, 15 workers are standing in the mix, each oneendangering the vapor barrier.

Source: Portland Cement Association (57_19)

slide25

Vigorous tool use.

Source: Portland Cement Association (Vol. 2 #34)

slide26

Vibration of the concrete is a widely used method of consolidation.

One manufacturer, Vibco, offers vibrators with head diameters between1-3/8” and 3”.

Sources: Wycotool (Vibrator Drawing) Vibco (Vibrator Specifications)

slide27

If you haven't seen enough unintentional construction damage, we should mention intentional vapor barrier damage:

    • ASTM E 1643 - 98, section 6.3:
      • "Avoid use of stakes driven through vapor retarder"
    • PCA Engineering Bulletin 075, page 15:
      • "The practice of intentionally punching holes through a vapor retarder to allow bleed-water to exit the slab bottom is unacceptable because it defeats the purpose of the membrane."
slide28

Summary of the problem:

  • Increased concerns about vapor penetrating slabs
      • A. Moisture damages flooring
      • B. Toxic mold from moisture vapor
      • C. Chemical vapor intrusion
      • D. Lawsuit potential
  • The industry standard is Vapor Barriers made of polyethylene:
      • A. Thin
      • B. Industry standard for puncture resistance: so low that it is expressed in GRAMS
  • ASTM E 1643 states that polyethylene vapor barrier materials are highly vulnerable to construction damage.
  • The big problem is construction damage.
slide31

Problems:

Sick Office

Solutions:

Happy Office

  • These Products Act As Barriers To:
  • Moisture/Water
  • Methane Gas
  • Radon Gas
  • Toxic Contaminants
  • Termites
  • Pesticides
  • Stress Cracks

Below grade self-sealing membrane system with a level of protection never before available.

slide32

THE UNDER-SLAB MEMBRANEACTS AS ABARRIER TO WATER & MOISTURE

Polyethylene

Rubberized Asphalt

Geo-textile Fabric

  • Reduces the amount and severity of cracking
  • -more facts
slide34

UNDER SLAB APPLICATION

  • UNDER-SLAB MEMBRANE
  • 20 Mil Vapor Barrier - 500% Extra Thickness for Protection
  • Stress Absorbing/Barrier Formulation
  • Geotextile Fabric for Mechanical Bond to Concrete
slide37

THE BLIND SIDE MEMBRANEACTS AS ABARRIER TO WATER & MOISTURE

Polyethylene

Rubberized Asphalt

Geo-textile Fabric

slide38

NEGATIVE SIDE MEMBRANE FOUNDATION WALL APPLICATION

BLIND SIDE MEMBRANE

WATERPROOFING SYSTEM

  • Geotextile Fabric for Bond to Concrete
  • Stress Absorbing Barrier Formulation
  • High Density, High Strength Polyethylene
slide43

BETWEEN SLAB WATERPROOFING APPLICATION

  • SPLIT SLAB MEMBRANE
  • 20 Mil Backing - 500% ExtraThickness for Protection
slide45

Split Slab Membrane

1,100 penetrations detailed with

1- or 2-part liquid membrane

slide46

THE PROTECTED WALL MEMBRANEACTS AS ABARRIER TO WATER & MOISTURE

20 mil. Polyethylene

Rubberized Asphalt

slide47

VERTICAL WALL WATERPROOFING APPLICATION

  • PROTECTED WALL MEMBRANE
  • Built-in Protection(Drainage Composite Optional)
slide49

ANTI-FRACTURE MEMBRANES

Anti-fracture membranes protect ceramic tile by providing a stress absorbing layer between the substrate and the tile. If the concrete substrate underneath cracks, the stress of the crack is not transferred up to the brittle ceramic tile. The stress is absorbed by the rubbery nature of the rubberized asphalt.

slide50

GUARDING TILE FROM STRESS FRACTURES

CERAMIC TILE

COMPONENTSFabric-bond to ThinsetStress Absorbing Membrane

LATEX MODIFIED THINSET

ANTI-FRACTURE MEMBRANE

CONCRETE

CRACK

slide51

FREEZE /THAWCYCLES

OVERLAY

OVERLAY

OLD CONCRETESLAB

OLD CONCRETESLAB

PAVEMENT BASE

PAVEMENT BASE

During cold weather, slabs contract away from each other.

In hot weather, slabs expand towards each other.

slide52

IN SUMMARY:

  • Under-slab Membranesseal out:
  • Moisture
  • Termites
  • Methane Gas
  • Radioactive Radon Gas
  • Mold
  • Pesticides and Other Toxic Chemicals
  • Under-slab Membranes act as ANTI-FRACTURE
  • MEMBRANES FOR SLABS
  • Continues sealing even under new cracks or moving joints
  • Reduces the amount and severity of cracking in slabs above the membrane.
  • Provides waterproofing, not just a vapor protection.
course questions
Course Questions

This concludes the continuing education course. The next 15 minutes will be focused on discussing the course material.

slide54

THIS CONCLUDES:

INNOVATIONS IN WATERPROOFING SYSTEMS

An AIA Continuing Education Program

Credit for this course is 1 AIA/CES Learning Unit for HSW credit.

Course Title: INNOVATIONS IN WATERPROOFING SYSTEMSCourse Number: POL07A