How to build a Tree House with a Slide and Swing-Set
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Step twenty-eight:
Sit one end of the swing-set beam in between two solid branches.
Tie securely with rope.
We used a 125mm x 125mm (5"x5") beam that was 3300mm (11ft) long. The height of the beam off the ground was 2500mm (100").
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Step twenty-nine:
Prop the other end off the ground 100mm (4") above level.
This is to allow enough room to position and concrete the posts (A-frame) into the ground.
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Step thirty:
Make up the A-frame which supports the end of the beam.
Work out the overall height of the A-frame (including the part that goes into the ground) and also work out the top angle cuts then make the fame up on the ground.
Fix a temporary brace to the two posts to hold the shape.
When the A-frame is made, determine the position of the footing holes and dig them.
Then stand the A-frame upright in the holes. Use whatever braces and props are necessary to hold the A-frame in the right position and plumb (upright).
Make a mix of concrete in a wheelbarrow at a ratio of 3 gravel, 2 sand and 1 cement. Add clean water and mix to a uniform consistency and carefully shovel the concrete into each hole.
Fill to within 75mm (3") from the top of the hole.
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Step thirty-one:
When the concrete has cured, lower the beam onto the A-frame and fix with galvanized nails, nail straps and nail plates.
Finally, hang your choice of swing(s) from the beam.
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Page 8: Instructions - The Swing-Set