InspectAPedia ^®

Sewer Line Replacement Procedure - final backfill InspectAPedia®  -     Details of Final backfill over a new sewer pipe Step by step main drain line replacement, house to septic tank (or sewer)

This article describes the final backfill stage when a sewer pipe or "drain line" is replaced. The line which was replaced in this photo-illustrated case runs from the building exterior to a septic tank located downhill from the home. We present an actual case study, illustrated with photos of each step in the diagnosis and replacement of a blocked sewer line. Technical reviewers are welcome and are listed at "References." This is a chapter of Inspecting, Testing, & Maintaining Residential Septic Systems an online book on septic systems. Also see Backups and Clogged Drains diagnosing septic backups and septic system failures versus clogged drains.

Citation of this article by reference to this website and brief quotation for the sole purpose of review are permitted. Use of this information at other websites, in books or pamphlets for sale is reserved to the author. © Copyright 2009 Daniel Friedman, All Rights Reserved. Information Accuracy & Bias Pledge is at below-left. Use links at the left of each page to navigate this document or to view other topics at this website. Green links show where you are in our document or website.

Guide to Details of Final backfill of the sewer line trench

After the drain pipe was fully bedded on and under sand, the excavator proceeded to backfill the remainder of the trench by pushing the excavated soil back in place. A skilled excavator can leave the site "rough graded" into a pretty smooth surface.

In this case a little work with an iron rake and some grass seed and the yard surface was back in acceptable condition. We bought a fast-growing fall-seeding grass seed so that grass would grow quickly so as to avoid erosion on the sloped rear yard, and we used some mulch to help hold the new seed in place until grass had sprouted.

The excavator took advantage of the backfill time to crush and bury piping scraps and debris from the excavated old sewer line. However we collected some of the larger debris, rubber and metal scraps, or other suspect items that had turned up during excavating (including a 1920's vintage automobile tire) to be hauled to a proper disposal site instead of permitting them to simply be buried on this residential property.

We picked out plastic and other large debris items that the client did not want to discover later in the property's soil.

Share this Article      

...

Technical Reviewers & References

Search InspectAPedia

• Daniel Friedman - principal author/editor of the InspectAPedia^® Website
• InspectAPedia Bookstore lists recommended books, organized by topic & available for purchase. Most of our articles also include a list of recommended books for the specific article topic as well as other references, and information sources.
• Critique, contributions wanted: Contact Us to suggest corrections or additions to articles at this website, and if you wish, to receive online listing and credit as a contributor. Particular thanks are due to the many experts and also consumers who read and critique technical articles at InspectAPedia.com.
• Additional technical contributors & reference sources for this article are listed below.

Use links just below or at the left of each page to navigate this document or to view other topics at this website. Green links show where you are in our document or website.

SEWER LINE REPLACEMENT
  Diagnosing a Blocked Drain
  When to Call a Plumber
  How to Locate the Main Building Drain
  How to Use a Power Snake on Building Drains
  How to Find Distance to Drain Blockage
  Determining Need for Replacement
  Replacing the Sewer Line, Step by Step
  Making Other Septic Repairs
  Installing the new sewer line
  Bedding the sewer line in Sand
  Final Backfill of the Sewer Line Trench
  Documenting Buried Components
  Final seeding and soil restoration

• Thanks to Thomas Gleason, excavators, Poughkeepsie, NY 845-454-3730, for the excavating work at the project photo documented here in September 2006
• Thanks to Cleveland Plumbing, the prime plumbing contractor, Staatsburgh, NY 845-485-7700 for the plumbing work and drain clog diagnosis work documented here in September 2006

More Information on Building Diagnostic Inspections and Repairs

• Backups and Clogged Drains diagnosing septic backups and septic system failures versus clogged drains - key step in septic repair
• HOW TO FIND A SEPTIC TANK
• DRAINFIELD LOCATION GUIDE
• SEPTIC VIDEOS assist in locating septic system or sewer line components
  
  
• The Septic System Information Website home page for this topic
• Septic Systems Inspection, Testing, & Maintenance- online textbook. Detailed how to inspect, maintain, repair information
• The Home Buyer's Guide to Septic Systems
• Septic Tank Pumping Guide: When, Why, How to pump the septic tank
• Table of Required Septic & Well Clearances: Distances Between Septic System & Wells, Streams, Trees, etc.
• Ten Steps to Keeping a Septic System Working, suggestions from the U.S. EPA, edits and additions by DJF
• What is a Septic System An Engineer's View & Septic System FAQ's
• Pennsylvania State Wastewater Treatment Fact Sheet SW-161, Septic System Failure: Diagnosis and Treatment

InspectAPedia® Home & Site Map - Building & Environmental Inspection, Testing, Diagnosis, Repair, & Problem Prevention Advice: In-depth research & advice on diagnosing, testing, correcting, & preventing building defects & indoor environmental hazards. Unbiased information, no conflicts of interest.

The Mold Information Center: What to Do About Mold in Buildings, When and How to Inspect for Mold, Clean Up Mold, or Avoid Mold Problems

Use this simple, economical mold test kit by following our instructions on how to collect and mail mold samples to our lab

Environmental Inspection, Testing, & Diagnosis On-Site IAQ, Gas, Air Testing, Mold Investigation, Sick Building Diagnosis, Lab Services, & Remediation Plan Preparation - indoor air quality testing, problem source determination, supporting lab work, written remediation plan addressing removal of environmental and other hazards and prevention of their recurrence.

Building Inspection, Problem Diagnosis, Forensic Investigation & Testing, Repair Consulting

Contact Daniel Friedman for website content suggestions or for fee-paid consulting