How far should riser pipes in a meter pit be placed from any wall to prevent freezing?

The distance riser pipes in a meter pit should be placed from any wall to prevent freezing is indeed critical for ensuring the functionality of water distribution systems in colder climates. A spacing of 1-2 inches is sufficient because it allows for adequate air circulation around the pipes, aiding in maintaining a temperature above freezing. This spacing also accommodates any potential thermal expansion of the materials and prevents direct contact with cold surfaces, which can exacerbate the risk of freezing.

Placing the pipes too close to the wall without this allowance would lead to insufficient air movement and could trap cold air or moisture, increasing the risk of the pipes freezing. Thus, the 1-2 inch spacing effectively balances the need for structural support while also accounting for thermal dynamics that help prevent the water within the pipes from freezing in low temperatures.