InTents October/November 2020 - 7
The tool had two immediate implications. It revealed that:
1. The industry was not using
enough ballast.
2. The coefϐicient of friction and the
basic geometry of ballasts such as
water barrels made them unsafe.
As a result, the tool raised the bar in
terms of how tents are ballasted, and it
has largely eliminated the use of water
barrels as ballast.
To clear up a few misconceptions, TRD
emphasizes the following:
* The Ballasting Study was not
pursued with the goal of achieving a
favorable result for the installers, but
rather to produce results that would
provide the public with safe tents.
* The study does not provide the
installer with the input for the stake
holding requirement. That comes
from the manufacturer and/or a
code requirement.
* The tool does not add any additional
factors of safety to the calculations
unless the user adjusts it to do so.
Ongoing work
"The TRD Education Committee is always on the cutting edge when it comes
to safe tent installations," says Michael
Tharpe, TRD Steering Committee chairman. The committee is currently working on Best Practices for Ballast Attachment. This has become more prevalent
as the weight and size of the ballast has
an effect on the overall application of
ballasting techniques.
TRD members can also look forward to
the introduction of the Non-engineered
Ballasting Study, which will be integrated
into the current TRD Ballasting Tool and
will be used to calculate the ballasting
requirements for tents that are not
engineered or for applications that do not
require full engineering for installation.
This additional research will show the
requirements for tents with and without
sidewalls, and will take into account the
various styles of frame tents, widths,
lengths, heights, anchor points down
each side and wind load criteria that
must be met. "Hopefully with this new
tool we can eliminate the most common
failure of ballasting, which is 'not using
enough ballast,'" says Tharpe.
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InTents October/November 2020
Table of Contents for the Digital Edition of InTents October/November 2020
InTents October/November 2020 - Cover1
InTents October/November 2020 - Cover2
InTents October/November 2020 - 1
InTents October/November 2020 - 2
InTents October/November 2020 - 3
InTents October/November 2020 - 4
InTents October/November 2020 - 5
InTents October/November 2020 - 6
InTents October/November 2020 - 7
InTents October/November 2020 - 8
InTents October/November 2020 - 9
InTents October/November 2020 - 10
InTents October/November 2020 - 11
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InTents October/November 2020 - 21
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InTents October/November 2020 - Cover3
InTents October/November 2020 - Cover4
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