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Fig I-7
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Loads (NBC 2010)
Snow Loads
Roof Snow Load
Snow Drift Load (Step) - (Fig G-5)
Snow Drift Load (Obstruction) - (Fig G-8)
Wind
Fig I-7
Fig I-8
Fig I-23
Seismic
building
component
Loads (NBC 2005)
Snow Loads
Roof Snow Load
Snow Drift Load (Step) - (Fig G-5)
Snow Drift Load (Obstruction) - (Fig G-8)
Wind
Fig I-7
Fig I-8
Fig I-23
Seismic
building
component
Structural Materials
Steel
Section
Column - Axial Resistance
Web Cripping / Web Stiffener
Timber
Section strength
Bolted Connection
Lag Screw Withdrawal
Concrete
Bending
Shear
Loads (NBC 2010)
Snow Loads
Roof Snow Load
Snow Drift Load (Step) - (Fig G-5)
Snow Drift Load (Obstruction) - (Fig G-8)
Wind
Fig I-7
Fig I-8
Fig I-23
Seismic
building
component
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Specified Wind Load - Figure I-7 (NBC 2010)
version 0.1.0
Project:
May 22, 2013
Designer:
Climatic Data
Location
Province:
User Values
British Columbia
Alberta
Saskatchewan
Manitoba
Ontario
Quebec
New Brunswick
Nova Scotia
Prince Edward Island
Newfoundland
Yukon
Northwest Territories
Nunavut
Reference Velocity Pressure
q:
Factors
Importance factor
I
w
:
Low
Normal
High
Post Disaster
Terrain:
Open terrain
Rough terrain
Reference height in meters above grade
height, h:
m
Roof Pitch:
/12
Internal pressure Category, C
pi
:
Category 1: Cpi = -0.15 to 0
Category 2: Cpi = -0.45 to 0.3
Category 3: Cpi = -0.7 to 0.7
Factors
Location: 100 Mile House, British Columbia
q
50
: 0.39kPa
Importance Factor, ULS: I
w
= 1.0 / SLS: I
w
= 0.75
Roof slope = 0 degrees
C
e
= (h/10)
0.2
= 0.9
External Wind Pressure
p
= I
w
*q*C
e
*C
g
*C
p
Load Case A: Winds generally perpendicular to ridge
Load Case B: Winds generally parallel to ridge
Side
1
1E
2
2E
3
3E
4
4E
5
5E
6
6E
Load Case A
C
p
C
g
0.75
1.15
-1.3
-2
-0.7
-1
-0.55
-0.8
n/a
n/a
n/a
n/a
ULS
p
(kPa)
0.26
0.4
-0.46
-0.7
-0.25
-0.35
-0.19
-0.28
n/a
n/a
n/a
n/a
SLS
p
(kPa)
0.2
0.3
-0.34
-0.53
-0.18
-0.26
-0.14
-0.21
n/a
n/a
n/a
n/a
Load Case B
C
p
C
g
-0.85
-0.9
-1.3
-2.0
-0.7
-1.0
-0.85
-0.9
0.75
1.15
-0.55
-0.8
ULS
p
(kPa)
-0.3
-0.32
-0.46
-0.7
-0.25
-0.35
-0.3
-0.32
0.26
0.4
-0.19
-0.28
SLS
p
(kPa)
-0.22
-0.24
-0.34
-0.53
-0.18
-0.26
-0.22
-0.24
0.2
0.3
-0.14
-0.21
Internal Wind Pressure
C
gi
= 2
C
pi
= -0.15 to 0
p
i
= I
w
*q*C
e
*C
gi
*C
pi
ULS: p
i
= -0.11kPa to 0kPa
SLS: p
i
= -0.08kPa to 0kPa
