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How to build and official American Ninja Warrior Salmon Ladder!

If you have any questions please let me know.

Please also check out Part 2 of "How to build a Salmon Ladder" to see how I concreted the post into the ground.

Material List for Dual Salmon Ladders:
4 – 12’ 2x4’s (To cut the rungs from)
2 – 10’ 2x4’s (To cut the pieces of 2x4 that go above and beneath the rungs)
8 – 16’ 2x6’s (The main frame for the Salmon Ladders)
2 – 10’ 2x6’s (To join the Salmon Ladders together at the top)
1 – 5 lbs box of 3” screws (Used to screw everything together)
4 – 40 lbs bags of Quikrete Concrete (1 bag is needed for each Salmon Ladder post)
1 – small box of 3” finish nails (Used to hold the rungs in place prior to screwing them down)
1 – Black Steel Fence Post (Common: 1.66-in x 6-ft; Actual: 1.66-in x 6-ft)


Material List for Single Salmon Ladder:
2 – 12’ 2x4’s (To cut the rungs from)
1 – 10’ 2x4’s (To cut the pieces of 2x4 that go above and beneath the rungs)
4 – 16’ 2x6’s (The main frame for the Salmon Ladder)
1 – 10’ 2x6’s (To connect the Salmon Ladder together at the top)
1 – 2 lbs box of 3” screws (Used to screw everything together)
2 – 40 lbs bags of Quikrete Concrete (1 bag is needed for each Salmon Ladder post)
1 – small box of 3” finish nails (Used to hold the rungs in place prior to screwing them down)
1 – Black Steel Fence Post (Common: 1.66-in x 6-ft; Actual: 1.66-in x 6-ft)


• The 16ft 2x6’s will not need to be cut. About 2ft of them will be concreted in the grow leaving 14ft above grow for your Salmon Ladders.
• The rungs are cut on a 35-degree angle measuring 10 ¾” from long point to short point.
• The rungs should be 12” apart. So from the top of one rung to the top of the next should be 12”.
• The 2x4 that goes above the top rung is 12 ½” from straight to short point.
• The 2x4 that goes beneath the bottom rung does not have to be precise because the bottom part of it will be buried in concrete. So just measure it when you get to that part.
• The 2x6 pieces that will be used to frame up the top will need to be measured after you get the salmon ladder post concreted in place. There dimension may vary a little depending on how far apart the post are. It is hard to get them perfect since they are so big and heavy.
• The Salmon Ladder post should be 4ft apart. So if you are building dueling Salmon Ladders you should have all 4 post planted 4ft apart forming a square.
• If you are building single Salmon Ladder, then you will just need to place the 2 post 4ft apart.