Anchoring Requirements (Non-Certified Tents)
Non-certified tents are not engineered to meet specific wind loads. Wind loads are approximate and are
generally rule of thumb calculations used in the industry based on actual field experience. Windload of a
non-certified tent will very to a maximum of approximately 30 to 50 mph dependent upon the style of type
of tent. The structural integrity of the tent may exceed the soil's holding capacity even at wind loads of
30 to 50 mph.
Frame tents require approximately 1000 to 2000 lbs of holding power per anchor location (dependent on
the size and style of the tent). For safety of all occupants, evacuation is recommended if weather
becomes severe.
Severe storms have micro bursts of wind that may be recorded far in excess of t he storm's highest
winds. The installer is responsible for properly securing the temporary structure (tent). Soil conditions
will vary and the wind loads that the temporary structure can handle could be significantly below its wind
load capabilities.
S-SERIES | 20x20
Guy Data:
1" Polyester Web - 3600 # rating*
*ASSUMES:
1. Surface: Compacted soil
2. Standard pull-out rate 800 lb/sq ft.
3. Normal staking configuration/conditions
36" Stake driven within 6" from the
top of the ground straight down or
a maximum 10 degree angle
7
17’
8'
5'
20'
*Holding power is based on firm soil conditions. If other conditions prevail, the holding power will
decrease and alternate anchoring methods are required.
Tent Size
Square
Footage
Anchor
Power
Required
Safety
Factor
Anchor
Locations
Holding Power
Required at Each
Anchor Location
10’x10’
100
960
1.5
4
240*
Note: The tent must be anchored properly for safe installation. Additonal guys and stakes
may be required depending on soil and/or wind conditions. Refer to the IFAI Procedural
Handbook for Safe Installation and Maintenance of Tentage for calculating the proper
anchoring capacity for soil and or ground conditions. Always follow manufacturer's recom-
mended anchoring techniques.
** S-Series 15’x15’ engineering certification documents are available upon request.**
