Abstract
(Continued from IRRD abstract No. 490261). The retrofitting method of existing steel piers in the metropolitan expressways (Hanno,H, Tajima,H, Kosaka,H) [English]; The Xomport tunnel : comparison of two excavation construction procedures (Guarga,RL, Gonzalez,MN) [Spanish]; The technical analysis of reinforcing and widening for overused bridge (Qian,Z) [English].