• 93 CIVIL ENGINEERING

• 93.010 Civil engineering in general

• 93.020 Earthworks. Excavations. Foundation construction. Underground works

• 93.030 External sewage systems

• 93.040 Bridge construction

• 93.060 Tunnel construction

• 93.080 Road engineering

• 93.080.01 Road engineering in general

• 93.080.10 Road construction

• 93.080.20 Road construction materials

• 93.080.30 Road equipment and installations

• 93.080.40 Street lighting and related equipment

• 93.080.99 Other standards related to road engineering

• 93.100 Construction of railways

• 93.110 Construction of ropeway

• 93.120 Construction of airports

• 93.140 Construction of waterways and ports

• 93.160 Hydraulic construction

           Last updated: 12/5/2001