Kips per platform inch.

    The tiedown kips per platform inch was measured on 18oct10 around 11:00 am. The process was:

The plot shows these motions (.ps) (.pdf):

• Top: tension from each of the 3 tiedowns
• center: total tension from the tiedowns
• bottom: platform height for the 3 moves
  

Summary:

• Pulling the tiedowns 8.8 kips moves the platform 1 inch
• moving the tiedown cables 1.7 inches moves the platform 1 inch.

Notes:

• Putting 8.8 kips on the platform will move the platform down less than 1 inch:
• the weight moves the platform down
• This releases some of the tension on the platform from the tiedowns
• The net weight (weight + tiedown tensions) is less than when just pulling on td cables by 8.8 kips.
• The platform also ends up higher than when just tiedown tension is increased by 8.8 kips.
  

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