Campbell Scientific CM106B Tripod - Manual (Page 33)

Appendix A. CM106B Allowable Wind
Speeds
CM106B load ratings assume:
• Sensors (effective area = 1.4 ft 2 ) at top of mast
• Solar panel (10.5 in x 16.5 in) at mast base
• Enclosure (14 in x 16 in) mounted to leg
• Guy wires attached to mast at 3.8 ft above tripod body
• Adequate ground anchors (stakes alone may not resist foot vertical
pullout force)
Tripod
Footprint
Dia.
Mast
Height
Mast
Config-
uration
Guy
Anchors
Max.
Allowable
Gust
Wind
Speed
Max.
Allowable
Equipment
Weight
Foot
Vertical
Pullout
Force at
Gust
Speed
Guy-
Wire
Tension
at Gust
Speed
Ideal Guy-
Wire
Installation
Pre-
Tension
ft m ft m mph m/s lb kN lb kN lb kN lb kN
11.5 3.5 7 2.1 Retracted
Unguyed 104 46 964 4.3 70 0.31 - - - -
Attached to
legs @ feet,
45deg
Zenith
159 71 639 2.8 163 0.73 300 1.3 150 0.67
Independent
anchors @
45deg
Zenith
159 71 639 2.8 56 0.25 300 1.3 150 0.67
8.7 2.7 9.3 2.8 Retracted
Unguyed 104 46 964 4.3 160 0.71 - - - -
Attached to
legs @ feet
159 71 438 1.9 352 1.57 400 1.8 200 0.89
Independent
anchors @
45deg
Zenith
159 71 639 2.8 155 0.69 300 1.3 150 0.67
11.5 3.5 10 3.0 Extended
Unguyed 81 36 964 4.3 59 0.26 - - - -
Attached to
legs @ feet,
45deg
Zenith
132 59 544 2.4 157 0.70 400 1.8 200 0.89
Independent
anchors @
45deg
Zenith
132 59 544 2.4 17 0.08 400 1.8 200 0.89
A-1