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Standard Series Manual - Safety Precautions
Important Safety Precautions
Part III: Wind Conditions

BlueSky Mast recommends that you do not to attempt to actively deploy in winds that exceed
15 mph.

During windy conditions it will be necessary to incrementally guy the mast as it is being deployed.

Incremental Guying will add time to the deployment but increase the protection of personnel
and equipment.
Use this chart to determine approximate wind speed:
VISUAL
OBSERVATIONS
KM/H
MPH
Smoke Rises Vertically
<1
<1
Safe
Wind Direction Shown
by Smoke
1-6
1-3
Safe
Wind Felt on
Leaves Rustle
7-12
4-7
Safe
Leaves & Twigs in
Constant Motion, Wind
Extends Light Flag
13-18
8-11
Use Caution
Dust and Loose Paper
Blown Freely, Small
Branched Move
19-26
12-15
Use Caution
Small Trees Begin to
Sway
27-35
16-22
Dangerous
Conditions
Large Branches in Motion, Wind Whistles
Through Wires
36-44
23-27
Dangerous
Conditions
Whole Trees in Motion
45-55
28-34
Dangerous
Face,
DEPLOYMENT
CONDITIONS
Conditions
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