Just for you Pierre I took some pictures of a "dinky pipe" lateral line repair today... it's only a 3" lateral. Actually, we were out reconfiguring a zone so two new portable classroom buildings can be brought in. We dug a couple of potholes to keep checking pipe sizing and thought we had it figured out here since it was 3" pipe. Problem was that the main lateral directly from the valve (finally found the valve under a semi-permanent room access ramp and it's totally inacessible) went undetected as we have no asbuilts. We had to backtrack to a tee about five feet before this in order to figure things out. And.... of course... we had to put the dinky pipe back together.