|
|
222-G
|
222-F
|
|
Structure Classification
|
I, II or III
Default is II
|
None
|
|
Basic Wind Speed
|
3-second gust
|
Fastest mile
|
|
Ice
|
Mandatory
Follows ASCE7-05
Escalates with height
|
Optional – 75% no ice
wind pressure w/ uniform ½” ice
|
|
Exposure Category
|
B, C or D
Default is C
|
C
|
|
Topographic Category
|
1 to 5
Default is 1
|
1
|
|
Earthquake loading
|
Section 2.7
Ignore if Class I,
Ss<1.00 or total seismic shear is less than 50% total wind shear
for structure w/o irregularities
|
None
|
|
Climbing and Working
Facility Classes
|
A or B
Default is B
|
None
|
|
Analysis
|
Feasibility and Rigorous
|
Analysis
|
|
Modification
|
Must be based on a
rigorous analysis
|
No Requirement
|
|
Rigging
|
Rigging plan required
Effect on tower must be evaluated
|
No Requirement
|