I have few questions about the horizontal lines:

1. is there a maximum length limitation for a toilet sewage line can go horizontally above the ground even with a proper slope? if yes, what's the number?

2. if I have a 52' long horizontal toilet drain line along basement wall with a proper slope, how many vents are needed just for this horizontal line? There will be a vent just after the toilet.

3. is there a maximum length limitation for a horizontal

4. Read following from other forum, why there is a maximum fall requirement?

thanks,

1. is there a maximum length limitation for a toilet sewage line can go horizontally above the ground even with a proper slope? if yes, what's the number?

2. if I have a 52' long horizontal toilet drain line along basement wall with a proper slope, how many vents are needed just for this horizontal line? There will be a vent just after the toilet.

3. is there a maximum length limitation for a horizontal

**vent line**?4. Read following from other forum, why there is a maximum fall requirement?

__The____drain line should have a minimum fall of 1/8" per foot (an 8' line would have 1" offall from end to end) and a maximum of 1/4" per foot.__thanks,

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