PlumbHub
CommercialResidentialServicesFor GCsAboutContact Call or text (929) 969-4339

Drain & sewer

Camera inspection first. Then jetting, cable or repair: whichever the pipe needs.

The drainage of the 3D building: the no-hub cast iron stack with a cleanout at its base, the building drain sloping to the house trap and fresh-air inlet at the front wall, on to the sewer.
P-106 · From the riser diagramStack, cleanout, building drain on its slope, the house trap with its fresh-air inlet, then the sewer. The camera goes in at the cleanout.

01 · The problem

A clog is a symptom. Grease, scale, a belly in the line, roots at a joint, a broken hub: each one needs a different tool, and clearing it the wrong way just books the next call.

02 · The system

Camera first. We look at the inside of the pipe, measure the distance to the problem and show you the recording before anyone opens a wall or a floor.

03 · The fix

Hydro jetting for grease and scale, cable for roots and solids, spot repair or replacement where the pipe is gone. The recording says what was wrong and the invoice says what was done.

How it goes

In the order it happens

  1. 01

    Camera first

    The camera goes in at a cleanout and the recording shows the inside of the pipe: grease, scale, a belly, roots at a joint, a broken hub. The distance to the problem is measured, so nobody opens a floor on a guess.

  2. 02

    The tool the pipe needs

    Hydro jetting for grease and scale, a cable for roots and solids, a spot repair where a section is gone, replacement where the pipe is. Clearing a broken pipe with a cable just books the next call.

  3. 03

    Access added where it is missing

    A cleanout at the base of the stack, at the house trap and at changes of direction. The next inspection takes an hour instead of a day.

  4. 04

    Proof

    The recording before and after, what was found, what was done. For restaurants and buildings, a maintenance interval set from what the pipe showed, not from a brochure.

Drawn out

From the stack to the street: the building drain, the house trap and the sewer

A section through the front of a New York City cellar. Everything the camera looks at, in the order the water flows.

From the stack to the street: the building drain, the house trap and the sewer SidewalkStreet sewerCellar floorStackCameraSlope 1/4 in per ftGrille123456789

The drawing scrolls sideways on a phone. The numbers are explained below.

  1. 1
    Stack and base cleanout

    The vertical line that collects every floor. The cleanout at its base is where a camera or a cable goes in; the base of the stack is also where the heaviest fitting takes the most wear.

  2. 2
    Building drain on its slope

    Under the cellar slab, falling toward the street at a quarter inch per foot for pipe of 2-1/2 inches and smaller, an eighth for 3 to 6 inch (NYC Plumbing Code Table 704.1). Too little slope and solids settle; too much and the water outruns them. A belly in the run shows on the camera as standing water.

  3. 3
    Backwater valve

    A flap that closes when the sewer surcharges. NYC Plumbing Code 715 calls for one on the drains of fixtures that sit below the nearest upstream manhole cover in the street, and only on those, so the rest of the building keeps draining.

  4. 4
    House trap

    The U at the front wall that keeps sewer gas out of the building. It is the lowest point of the system, so grease and grit settle there; the two cleanouts on top are what make it serviceable without breaking the floor.

  5. 5
    Fresh-air inlet

    A vent off the building side of the house trap, run up and out through the front wall to a grille above grade. It lets air in behind the trap so the water seals on the fixtures upstairs are not pulled out when a big load goes by.

  6. 6
    Building sewer

    From the street side of the trap, through the wall, down to the city main. The joint at the wall and the run under the sidewalk are where roots and settlement do their work.

  7. 7
    Street sewer

    The city main under the street. A repair stops at the property line unless the drawings and the DEP permit say otherwise; the camera tells you which side of the line the problem is on.

  8. 8
    Cellar floor drain

    Trapped, and primed if nothing runs into it often, or the seal evaporates and the cellar smells like the sewer. On its own branch to the drain, with the backwater valve where the elevations call for one.

  9. 9
    The camera

    In at the cleanout, out with a recording and a footage count to the problem. The recording says grease, scale, roots, offset joint or broken pipe, and the distance says where to open the floor if it comes to that.

Jetting for grease and scale, a cable for roots and solids, a spot repair where a section is gone. The tool follows the picture, not the other way around.

What is included

  • Video camera inspection with recording
  • Hydro jetting and cable clearing
  • Cleanouts added where there were none
  • House trap and sewer line repair or replacement
  • Scheduled maintenance for restaurants and buildings

Where

New York City: Brooklyn, Queens, Manhattan, the Bronx and Staten Island. PlumbHub LLC manages plumbing and fire protection projects. Licensed plumbing and sprinkler work in New York City is contracted, performed, filed and signed off by the New York City Licensed Master Plumber or Licensed Master Fire Suppression Piping Contractor engaged for each project, chosen to fit the job.

How a house trap works

Questions people ask first

What is the house trap and why does it keep backing up?

The house trap is the U-shaped fitting at the front wall where the building drain meets the sewer; New York City buildings have one, with a fresh-air inlet on its building side. It is also the lowest point in the system, so grease and solids settle there. Two cleanouts on the trap are what make it serviceable; a trap without them gets replaced when it fails.

Jetting or cabling?

Jetting cuts grease and scale off the pipe wall with water; a cable punches through roots and solids. On a cast iron line with years of scale, a cable makes a hole through the blockage and the pipe is tight again in a month. The camera says which one the line needs.

Do I need a backwater valve?

Where fixtures sit below the level of the nearest upstream manhole cover in the street, a surcharge in the sewer pushes back up into them; NYC Plumbing Code 715 calls for a backwater valve on the drains serving those fixtures, and only those. The camera inspection and the elevations say whether your cellar fixtures are in that position.

Related

Other systems

P-104 · Residential

Repairs & leaks

Leaks, valves, toilets, faucets, low pressure, burst pipes. Found, then fixed.

P-108 · Commercial & residential

Repiping in copper & cast iron

Failed galvanized, old stacks, corroded risers. Replaced in phases in occupied buildings.

P-103 · Residential

Bathroom & kitchen plumbing

Renovation rough-in and trim-out: new layouts, valves, drains, fixtures, appliances.

Tell us what it does. We tell you why.

Call or text with the symptom, or send photos and the layout for an estimate.