Most buildings over 40-storeys constructed since the 1960s now use a tube design derived from Khan's structural engineering principles.

Extensively using natural light, it is built in both a cut-and-cover and tube design.

This system uses a tube within a tube design to give the bike more torsional stiffness.

It was Friday when artwork for the tube design arrived.

This first energy saving tube design remains a T12 tube even today.

This article discusses the curved tube design.

For the curved tube designs, often only part of the tube could be reached.

They used a tube design, and some had reverb and tremolo.

The tube design is well-recognized in Sweden and in Finland.

As a result, the station was built in a tube design.