Transcript Diapositive 1 - Conception Bay South

A culture of service
PRE-ENGINEERED WOOD
PRODUCTS
TOWN OF CONCEPTION BAY SOUTH
CONTRACTOR BREAKFAST
April 30, 2014
AGENDA
• Roof Truss
– Beyond Part 9 of NBC 2010
– Modification of Truss
• Beams
– Load
– Modifications
– Columns
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ROOF TRUSS
LENGTH
• Maximum “Length” Under Part 9 NBC
– Not Length - SPAN – 12.2m (40 ft)
– Per S. 9.23.1.1 (e)
• > 12.2m Part 4 NBC
• Lintels
– Tables A-12 to A-16
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ROOF TRUSS
•
•
•
•
•
9.23.12.3 for Tables A-12 to A-16
Residential Occupancy Only
Wall Studs > 38mm x 64mm
Spans of Supported Joists <>4.9m
Spans of Trusses <> 9.8m
Otherwise Check with Engineer
4
ROOF TRUSS
MODIFICATIONS
• Notching and Drilling
– Simply Put – NO!!
• Unless designed S.9.23.5.5 (1)
• Spacing
– Must follow design
• Go Back to Designer – They’ll get Engineering
Advise/Certificate on Changes
5
BEAMS
LOADS
• Length
– Depends on load
• Eg Open Basement Room
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BEAMS
7
BEAMS
8
BEAMS
9
MODIFICATIONS
to
ENGINEERED BEAMS
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BEAMS
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BEAMS
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BEAMS
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BEAMS
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BEAMS
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COLUMNS
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COLUMNS
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COLUMNS
SAWN LUMBER
- Be Careful
- Especially with Bigger Loads
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QUESTIONS??
Greg Chafe
782-2000
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