A few days ago, in a heated discussion between 2 other plumbers, it was implied that any plumber using PVC j-hooks to hang pipes was a hack using crutches because they will fail miserably when the pipe fills with water.

I performed this

Most of the PVC waste pipe used in houses near me is 3" Charlotte pipe. Most of the townships follow the IPC 2009 which calls for 4 foot max horizontal pipe hangers. I chose to use the crappiest box store purchased j-hooks.

I was able to hang my entire weight (145 lbs) on a single j-hook installed with the 2 OEM supplied nails. But where is the fun in that, right? Besides, I cant take a picture of that!

I hung 2 j-hooks at the 4 foot length. I didnt have 4 feet of pipe, so I used whatever length I had longer than 4 feet. I then hung a rope with a hook at the end connected to a 5 gallon bucket, and started filling it with water.

8.3454 lbs per gallon of water

120 degree water requires a minimum of 4 feet between hangers

per Charlotte - 3.5" OD -.216 -.216 (walls) = 3.06 ID

Pi(r^2)*L = volume = 352.99 cu inches

231 cu inches per gallon of water

=1.53 gallons per 4 feet

1.53 gallons = 12.77 lbs

3" pipe per foot = 1.412 lbs = 5.65 lbs per 4 feet

Bucket weight = 8 lbs

Rope and hook = 1 lb

pipe weight empty = 5.65

5 gallons of water = 41.73 lbs

Originally posted by

**NHMaster3015***very*scientific experiment to see if I was indeed a hack.Most of the PVC waste pipe used in houses near me is 3" Charlotte pipe. Most of the townships follow the IPC 2009 which calls for 4 foot max horizontal pipe hangers. I chose to use the crappiest box store purchased j-hooks.

I was able to hang my entire weight (145 lbs) on a single j-hook installed with the 2 OEM supplied nails. But where is the fun in that, right? Besides, I cant take a picture of that!

I hung 2 j-hooks at the 4 foot length. I didnt have 4 feet of pipe, so I used whatever length I had longer than 4 feet. I then hung a rope with a hook at the end connected to a 5 gallon bucket, and started filling it with water.

8.3454 lbs per gallon of water

120 degree water requires a minimum of 4 feet between hangers

per Charlotte - 3.5" OD -.216 -.216 (walls) = 3.06 ID

Pi(r^2)*L = volume = 352.99 cu inches

231 cu inches per gallon of water

=1.53 gallons per 4 feet

1.53 gallons = 12.77 lbs

3" pipe per foot = 1.412 lbs = 5.65 lbs per 4 feet

**Total weight required to be held by 2 hangers is 18.42 lbs****Test 1**Bucket weight = 8 lbs

Rope and hook = 1 lb

pipe weight empty = 5.65

5 gallons of water = 41.73 lbs

**Total hung on rope with 2 j-hooks = 56.38 lbs**(passed)__- My weight on a single j-hook =__**Test 2****145 lbs.**(passed)
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