AL AZHAR ROAD TUNNEL

DATE

April 1999

CLIENT

Campenon Bernard

LOCATION

Downtown Cairo

DESCRIPTION

The El Azhar Road Tunnel is a major underground roadway that connects a long and crowded area of ancient Cairo between the El Ataba district and Salah Salem Expressway. At the beginning of the tunnel are two entrances to the south and north of the El Opera parking building, heading southeast until they join after crossing El Ataba Square. The tunnel continues southeastward below El Azhar Street, almost parallel to Gohar El Kaid/ El Moski Streets, until it reaches Salah Salem Street at El Khalideen Park.

PROGRAM OF WORK

25 boreholes with depths ranging from 15m to 57m

Nine SPT boreholes with depths ranging from 30m to 40m

Six piezometers with depths ranging from 15m to 55m

11 CPTU with depths ranging from 7m to 16m

12 Dilatometer Tests with depths ranging from 6m to 19m

Samples were collected by continuous coring technique using Mazier and SPT.

In addition to the geotechnical program, concrete coring, inclinometer installation and sonic testing were carried out in part of the project.