PRODUCTION CAPABILITY

In-House Steel Core Welding for Large Specimen Trees

Project Background

Every architectural-grade tree we build starts as a welded steel core. The skeleton determines whether a 7-metre specimen stays upright in an atrium draft, so we weld it in our own workshop rather than sourcing welded frames from a subcontractor.

Specifications

Core material	Q235 galvanised steel tube
Core diameter	48–200 mm depending on tree height
Welding method	TIG welding, full penetration at joints
Surface prep	Hot-dip galvanised before bark carving
Base fixing	Bolted to a base anchor plate, not free-standing

Client Challenge

Lightweight blow-moulded plastic cores cannot be anchored and fail under wind load. Buyers who have been given a hollow core typically discover the problem on site, when a finished tree tips in a lobby draft and has to be removed and rebuilt.

Solution

We calculate the core gauge against the tree's height, canopy area and the site's wind load, then weld and galvanise it in-house. The result bolts to a structural base plate, which is the same detail your structural engineer signs off on.

Welding & Production Photos

Final Installation