BlueSky Mast AL1 STANDARD Series, User Manual

Page: 7 / 76

Safety Precautions
support@blueskymast.com
877-411-6278
Page
7
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 de-
ployed.

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 DEPLOYMENT
CONDITIONS
Smoke Rises Vertically <1 <1 Safe
Wind Direction Shown
by Smoke
1-6 1-3 Safe
Wind Felt on Face,
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 Mo-
tion, Wind Whistles
Through Wires
36-44 23-27 Dangerous
Conditions
Whole Trees in Motion 45-55 28-34 Dangerous
Conditions