Tear Down a 12ft Spiral Post with All-Terrain Leveling Bas

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This 12ft Spiral post can set-up quickly and easily in any terrain. Tear down is even quicker if necessary for stowing or transport. It is fabricated in two pieces with a 4ft leveling base and an 8ft extension with verging bucket pairs at opposite ends.

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4ft Leveling Base
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The 4ft leveling base can be set to vertical in any terrain. The simple design includes a friction feature between the legs and outriggers during set up that enables one-person leveling and securing. It stows rather compactly as a 6-1/2in square although rather long, 10ft as shown. It can stow shorter if all legs and outriggers are rotated to the same direction, but it doesn’t stack so easily that way. Use thick rubber bands, bungees, or velcro straps to hold the legs and outriggers together during stowing and transport. Attach a thick rope as a handle for carrying.

ITEMS:
(1) 4x4x48in post with marks all around at 12in from each end leaving 24in between.

(8) 2x4x48in legs and outriggers with double tapers at one end to enable rotation for stowing.

(8) 1/4 x 4in washer head screws (torx/star bit) as rotary hinges for legs and outriggers to set level.

(4) 1/4 x 2-1/2in washer head screws (torx/star bit) to secure legs to outriggers near the tips once leveled.

(1) post level

(1) 3ft thick rope or strap as a carry handle.

(1) paddle bit slightly larger than the carry handle rope/strap.

(1) drill, battery, charger. 10in bit extender to attach buckets, and bits to match screws.

FABRICATION:
1) Mark the 4x4x48in post all around at 12in from each end.

2) Affix (8) 2x4x48in legs and outriggers to the post on those lines using 4in long washer head screws to act as rotary hinges for leveling. Use washer heads so they don’t bury. Note that all the legs and outriggers are tapered at the hinge end. They are also attached to the post about 1/2in off center to ensure they rotate past each other to stow.

3) Add a thick rope or strap about 3ft long as a handle when in the stowed configuration. Insert
through holes about 12in on either side of the center of gravity of the assembly in its stowed configuration. Tie knots in the rope/strap to choose a convenient handle length. Cut away the extra.

SET-UP:

1) Carry the stowed configuration using the rope/strap and place at the intended set-up location.

2) Remove the thick rubber bands, bungees, or velcro straps from around ONE set of legs. Leave the others on. The stand is reversible vertically.

3) Rotate all four loose legs so they are up against the other stowed legs. This leaves the “bottom” post end exposed.

4) Lift the “top” stowed end pivoting on the “bottom” post end at the intended ground location. Drop all four loose legs so theytouch the ground. Don’t let go of the stowed end.

5) Hold the upper stowed assembly and carefully remove the remaining thick rubber band, bungee, or velcro straps to ensure no legs rotate down uncontrolled. Then drop all four upper legs to the ground. They should have some friction with the outriggers to hold the stand in place as you level it.

6) Affix a post level and adjust opposite side legs and outriggers in pairs separately until vertical.

7) Step down on both the outrigger and legs to ensure firm contact with the ground, check the level again, then drive a 2-1/2 or 3in washer head screw through the point where the leg meets the outrigger.

8) Repeat for the OPPOSITE side leg and outrigger.

9) Repeat for the remaining pair of opposing legs and outriggers.

10) Place the 8ft extension with buckets on both sides of the leveling stand post. It should slide on easily and rest on the shoulders of the legs. Affix using (2) 4in washer head screws through the handles into the top of the leveling stand post.

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8ft Extension with Buckets
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The 8ft extension is fabricated using (2) 2x4x96in beams with verging bucket pairs at opposite ends. They are connected to each other with (2) 4x4x6in post sections at about 24in from both ends. Connect them to form 180deg bucket directions. Attach (2) 2x4x6-1/2in handles at the bottom using a scrap piece of 4x4 spacer (plus 1/8in) to ensure the gap will slide easily onto the leveling base post. Use two 4in washer head screws to affix the handles to the leveling base post.

These test methods for Small Unmanned Aircraft Systems (sUAS) are being developed by the National Institute of Standards and Technology (NIST) with sponsorship from the Department of Homeland Security (DHS) Science and Technology Directorate (S&T). They are being standardized through the ASTM International Standards Committee on Homeland Security Applications; Response Robots (ASTM E54.09). They are referenced in the National Fire Protection Association Standard for Small Unmanned Aircraft Systems Used for Public Safety Operations (NFPA 2400) as Job Performance Requirements to focus training and evaluate remote pilot proficiency.

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