INNOVATION IN STRUCTURAL ENGINEERING
Hartford Installations Inc.
Historic Spire Retrofit
When an historic timber spire in Canada needed to be reinforced to meet modern
loading criteria, a new structural steel frame was designed and constructed
for installation inside the original spire at which it would bear on existing
masonry walls. Challenges included seismic retrofitting while retaining original
timber architecture and fitting the frame inside a tall, narrow structure without
interfering with existing wood louvers.
A S TAAD.Pro model of the steel frame geometry was created and current
building code-required loads were applied to the model. New structural steel
members were designed for strength and deflection requirements. STAAD.Pro
optimized the steel weight, keeping the sections light enough to be erected
120 feet above ground in the narrow space. Considerable time was saved in
analyzing different combinations of complex loadings on the spire structure.
ISC Consulting Engineers A/S
Ship Loader at Statoil Mongstad Oil Terminal
Located on the North Sea, the new plant for dust-free loading of coke at the
Statoil Oil Terminal in Mongstad, Norway, includes a 125-meter inclined
conveyor, a 75-meter moveable ship loader, and a pivot tower. Coke is
transported from an existing onshore scale house to the pier where it is loaded
onto ships. The ship loader is designed to fit different ship sizes, with a boom
that extends by 23 meters.
The challenge was to design a flexible system that provides a high degree of
environmental protection. A slewing ring made of laminated composite material
designed for use with a large-diameter roller bearing was the key to developing
an efficient, dust-free loader. ProSteel was used to develop the design, workshop
drawings including NC files, and installation and maintenance documentation.