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What is this hole in the basement floor??


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Looking to put laminate flooring down in the basement. However, what appears to be a cut PVC pipe filled with putty is preventing a level floor. Anyone know what this is and whether it can be grinded down? This was discovered after removing carpet and the padding. There is already a water drain about 15 ft away from this hole in the furnace room. It is located at the front of the house. Any help appreciated. Thx for reading.

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The centre of the hole is ~7"" from the wall. I've included pictures with a quarter next to the hole and 1 foot tape measure for scale. Carpet/underpad was covering this hole for the last 7 years. The previous owner (house is less than 12 years old) did not have toilet in this location. Water drain is about 15' away in furnace room. Hole is located at front of house in basement. Trying to determine whether its safe to remove putty and grind down pipe for laminate install (less than 5mm is probably all that is required for grinding). Thanks again for the help.

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I think Bill is right. Passive radon vent was required by code in NJ 12 years ago

Depending which Tier you're located in.

Neal- We require them in all of the houses we design. It is an insignificant cost to install the pipe at the time of construction compared to a retrofit. It also looks better than a pipe running along the side of a new house. Radon gas does not know where people have placed the Tiers. I have found radon level numbers above guideline thresholds in all Tiers.

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Steven,

How do you size the pipe? you design all houses with sand, gravel, drain and visquene? Does NJ have min cfm for fans? Not trying to be nutty here, just really am interested because of your skill set.

PS: If the radon attended public school it likely does not know where the tier border is!

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Steven,

How do you size the pipe? you design all houses with sand, gravel, drain and visquene? Does NJ have min cfm for fans? Not trying to be nutty here, just really am interested because of your skill set.

PS: If the radon attended public school it likely does not know where the tier border is!

Les,

I can't remember the last house we designed that did not have a basement.

The fan is not required as part of the passive radon system. Basically, the piping system is installed and ready to be activated. There is a provision for a fan but it is not installed unless needed.

Here is a link for you to read about NJ and Radon:

http://www.nj.gov/dep/rpp/radon/newcon.htm

There is a separate Radon Hazard Sub-Code as part of the building code in NJ.

To answer your question simply, the size of the basement determines the amount of vertical radon pipes that are required.

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