Waste bag and assembly methods

A dumpster bag comprising:

• a flexible bag member including a bottom and a sidewall structure extending upward from the bottom to a rim, the flexible bag member having four lower corners and four upper corners;
• four corner stays each extending within an interior respectively vertically between a respective associated one of the lower corners and a respective associated one of the upper corners, the four corner stays each comprising a plastic pipe assembly comprising a plurality of pipe segments joined by collars, each collar solvent or adhesive bonded to one of its two joined segments;
• and
• four rim stays each extending horizontally along a respective side of the bag between two adjacent ones of the upper corners and each having a first end in a first pocket along the rim at a first said adjacent upper corner and a second end in a second pocket along the rim at a second said adjacent upper corner and passing through a loop along the rim between the first pocket and the second pocket.

A dumpster bag comprising:

• a flexible bag member including a bottom and a sidewall structure extending upward from the bottom to a rim and having four corners;
• four rim stays each extending between two adjacent corners of the four corners, having a first end in a first pocket along the rim at a first of said two adjacent corners and a second end in a second pocket along the rim at a second of said two adjacent corners, and passing through a loop along the rim between the first pocket and the second pocket;
• four corner stays respectively along the four corners;
• and
• an interior and/or exterior of the bag member bearing fill level indicia.