Ground is subsiding where demolished North Avenue building stood. |
Yardstick marks 'ledge' at 20 inches, before dropoff of many feet. |
Gap at corner indicates basement may have extended under sidewalk. |
The location isn't a mystery, it's the gap in the North Avenue Historic District's facade caused by the demolition of a vacant Victorian commercial and residential property that the City had not invested in stabilizing.
Bernice had noted some soil subsiding some time ago, but when I passed by recently it seems to have accelerated. The picture with the yardstick shows that there is a 'ledge' about 20 inches below the sidewalk level, after which there is a gaping void.
It occurred to me that the problem is that the building's basement may have run under the first width of sidewalk pavement, which was a common practice in older commercial buildings and allowed for the delivery of coal to fire the building's furnaces through doors set in the pavement.
View of North Avenue, indicating basement openings and demolished property. |
Around the corner on Watchung Avenue. |
Skylight with glass rounds lets light into basement storage area. |
View down steep steps to basement storage area. |
Do you know of more examples around town?
Where shall we go next week?
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