The treehouse will be hidden in a remote redwood grove, beyond a Gravenstein orchard
Structurally, the new treehouse I’ve been commissioned to design will be a radical departure from the various tree-sited structures I’ve made over the years, but the spirit of arboreal living will remain in tact. Sited at the edge of a dense, second growth redwood grove, this treehouse will be more like a watch tower, aloft in the trees without making direct connection to any tree. Consisting of a rustic cabin perched atop a winding stair tower, the new treehouse will have more in common with regionally familiar water towers and silos, for which the foundational connection to the ground is most critical. After laying out the structure’s footprint in a clearing between clusters of coast redwood, our first step has been to take soil samples, which will be analyzed by a soils engineer to specify the appropriate footings for minimal impact to the root system.
carefully digging soil samples in the redwood grove
We dug about thirty inches deep and confirmed the soil to be Wilson Grove Formation, consisting of late Pliocene/late Miocene marine deposits, common to our neck of the woods. The structure will be supported by a perimeter of cast concrete, deeply secured to the ground with helical anchors screws