Upload
others
View
1
Download
0
Embed Size (px)
Citation preview
“Wiss, Janney, Elstner Associates” is a Registered Provider with The American Institute of Architects Continuing Education Systems (AIA/CES). Credit(s) earned on completion of this program will be
reported to AIA/CES for AIA members. Certificates of Completion
for both AIA members and non-AIA members are available upon
request.
This program is registered with 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.
Copyright Materials
This presentation is protected by US and International
Copyright laws. Reproduction, distribution, display and use of
the presentation without written permission of the speaker is
prohibited.
© Wiss, Janney, Elstner Associates, Inc. 2013
Develop a basic understanding of below grade waterproofing and drainage systems, along with the integration of these systems with above grade weather barrier system(s).
1. Define below grade.
2. Define below grade waterproofing and drainage types and systems.
3. Discuss the application and design of below grade waterproofing and systems.
4. Examine typical detailing of the more common below grade systems.
“The portion of a building that is below ground level.”
Two Types of Systems
Positive Side:
Waterproofing placed subsequent to the installation of the structural wall
Waterproofing material adheres to the below grade structural wall
Negative Side or Blindside :
Waterproofing placed prior to the installation of the structural wall
Concrete typically bonds to the material during casting
Two Types of Systems
French Drain
Typically installed as part of
positive side below grade
waterproofing application
Under Slab
Typically installed as part of
blindside below grade
waterproofing application
Selection of the system is dependent on the
location and type of the structural walls
Provide continuity with the vapor barrier
(below the slab) and the wall waterproofing
system above grade
Provide protection for the membrane
Provide a drainage system to relieve hydrostatic
head pressure
Design Considerations
Waterproofing material selection
Vapor barrier selection
Insulation required? Type?
Provide drainage? Where can I drain to?
Integration with above grade wping
Basic Components
Below Grade Wping
Material
Drainage
Mat/Protection
Board
Insulation
Vapor Barrier
Drainage (maybe)
General Rules – At Grade Integration
Extend below grade waterproofing 8 “ minimum above grade,
integrate with the above grade waterproofing system
Protect the below grade waterproofing system above grade
45° Bend at
Corners
Cleanouts at 100
ft and/or every
second turn
General Rules
Perforated pipe, pre-wrapped with filter fabric installed at the bottom of the excavation
Non-perforated pipes used at cleanouts, etc.
Slope pipe 0.5% - start pipe 12” below FFE
Provide cleanouts at every 100 feet o.c. and/or every two corners
45° bends at corners
Filter fabric wrapped gravel around pipe; extent depends on depth, etc.
Provide a clay cap at landscaped areas, below top soil
Design Considerations
Waterproofing
material selection
Vapor barrier
selection
Where can I drain to?
Integration with
above grade wping
Basic Components
Below Grade Wping
Material
Drainage
Mat/Protection
Board
Vapor Barrier
Under Slab
Drainage
Note the lap
direction
Not
Recommended
Integration with
above grade wping
varies by condition
General Rules – At Grade Integration
Integrate of below grade with above grade waterproofing system –
extend below grade system 8” minimum above grade
Protect the below grade system at grade
Leakage will occur at discontinuities
Positive Side
Waterproofing
– drain pipes
to exterior
Water piped to
sumps
Drain pipes at
interior below
slab
45° at Corners
Slope pipe at
0.5%
Water piped to
sumps (not
elevator sumps)
This concludes The American Institute of Architects
Continuing Education Systems Course
Jeffrey Acton: [email protected]
Thank you for your time!