In late fall 2018 National Grid sent contractors to replace the natural gas line in my street. It was a very old steel pipe, installed about 70 or so years ago - back to the days of manufactured gas. In those times we used the gas only for cooking; home heating was with a coal furnace and combination side-by-side coal for heating and gas cook-top stove. Hot water was furnished by either a pipe loop in the furnace or a separate small 'joker' heater in the cellar. When natural gas arrived we converted to gas heat - quite a blessing!

Gas Main 01

All these pictures were taken from my home. Here we see trenching across the street to connect the new plastic line to the original steel supply pipe - still in use.


Gas Main 02

Here we see the workers connecting to the original line.


Gas Main 03

Trenched to the new outside meter location. The old meter is located at the center front wall of the cellar. In recent years the meter is read automatically by radio from a vehicle. Previously it was read by a meter reader monthly by entering the house and cellar. This meant you had to be home to admit the reader.


Gas Main 04

The meter removed from the cellar and newly positioned outside with new piping in the cellar.


Gas Main 2018

The steel plates over the street trench just barely visible behind the truck. Work continues.


Gas Main 2018

A closer view of the work on the line.


Gas Main 2019

Preparing to cover the poly sheeting with the 2" top layer of concrete.


Gas Main 2019

Ready to pour the top finish layer over the plastic sheet.


Gas Main 2019

A New Year and the workmen are pouring temporary concrete in the cuts. With a thick lower layer they are now pouring about 2" over polyethylene sheeting to keep the layers separate.


Gas Main 2019

Another view of the concrete pour. The cold weather was evidently not a problem. The steel plates to cover the hardening concrete are on the left.


Gas Main 2019

Pouring the bottom layer of concrete.


Gas Main 2019

It's now June 2019 and the top layer of concrete is being removed. The polyethylene sheeting is being discarded in bags for recycling while the concrete chunks are loaded in the truck.


Gas Main 2019

Worker removing the polyethylene sheeting. They are putting the plastic into the black trash bags for recycling.


Gas Main 2019

Pouring the hot mix asphalt, replacing the removed top layer of concrete.


Gas Main 2019

Another view of the cut finish. The 'Bobcat' was indispensible to the work - always on the move.


Gas Main 2019

The machine applying the blacktop to the long street-side cut in a smooth layer ready for rolling.


Gas Main 2019

Bobcat giving the asphalt spreader a refill.


Gas Main 2019

Pouring mix for the final finish of the cross-street cut.


Gas Main 2019


Gas Main 2019

Continuing the pour. The gas powered portable tamper is in the foreground.


Gas Main 2019

Tamping the edges of the paving before it will be finished with a large roller.



Original: July 2019. It turned out to be a larger project than I had supposed to replace the aged steel gas line (the original was 'blown out carefully, sealed' and left in the ground). The crews worked diligently throughout the winter - surprisingly they had no problem with the temporary concrete curing. All in all, nicely done. National Grid still has a Herculian task remaining with old lines.


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