Case Studies

Zhuhai Bridge, Hong Kong

The large ‘wave form’ roofs of the terminal buildings produced a challenging expansion problem, which was solved using the welded T-Pren expansion joint. This allowed freedom of movement but produced a waterproof joint.

King Abdulaziz International Airport, Jeddah

The new airport covers 670,000m² and so accommodating the thermal movements of such a large aluminium roof was an important design issue, which was overcome by the use of the T-Pren expansion joint. The aluminium sides of the T-Pren were welded to the aluminium sheets in the gutters to form a waterproof expansion joint.

Rocky Ridge – Calgary, Canada

The wide curved gutter required special long lengths of T-Pren, 9 to 18m long, which were installed in pairs to provide double the expansion movement. T-Pren forms a waterproof expansion joint, which eliminates the need for the standard step detail, and results in fewer rainwater outlets.