KLING & FREITAG K&F SEQUENZA 5 W - Manual (Page 17)

User's manual K&F SEQUENZA 5 incl. accessories
KLING & FREITAG GMBH © 2015 Version 4.1 Page 17 of 88
For the stability inspection, you must always factor in an imperfection (tilt) of +/-15° and
destabilising loads. A planned tilt of the flying frame ist not permissible. In calculations, the
tilted setup serves the purpose of levelling out unevenness.
With the set-up systems for which you cannot verify the structural safety without safeguards,
you must secure them to prevent sliding or tipping in order to provide proof of this safety. To
secure the system from tipping over, use water tanks or floor bolts. Other possible measures
include strapping it to a suitable substructure or tying it using safety straps. The simulation in
the CON:SEQUENZA+ software is not valid as a verification of structural safety. This software
always states that you must secure stacked speakers to prevent their falling over.
For outdoor and trade fair venues in which wind loads must be considered, additional proof
of stability is necessary.
Maximum number of stacked speakers
The number of speakers (max. 7) depends on the tilting angle and must be verified by
the simulation software CON:SEQUENZA+. This shows if the structural stability is attained
with the optional outriggers or if the system has to be separately secured (i.e. with straps,
weights, etc.) The simulation software CON:SEQUENZA+ shows if safe operation with the
outriggers is guaranteed. The setup configuration with the outriggers must be secured. But
even with additional securing, no more than seven speakers may be stacked.
5.3 Wind Loading
For open air events, obtain current local wind and weather data. The following chart
provides a preliminary indication
Bft m/s Windspeed Description
0 0-0.2 Calm Smoke rises
vertically
1 0.3-1.5 Light air Smoke drift
indicates wind
direction, vanes
do not move
2 1.6-3.3 Light Wind felt on face,
vanes begin to
move
3 3.4-5.4 Gentle Leaves, small
twigs in constant
motion, light flags
extended
4 5.5-7.9 Moderate Dust, leaves, and
loose paper raised
up, small branches
move
5 8.0-10.7 Fresh Small trees in leaf
begin to sway,
whitecaps on lakes
visible
6 10.8-13.8 Strong Larger branches
of trees in motion;
whistling heard in
wires
7 13.9-17.1 Near gale Whole trees in
motion; resistance