CHAPTER X.

EXAMINATION, REPAIR, AND STRENGTHENING OF RIVETED BRIDGES.

Purpose--Methods of examination--Calculations--Stress in old work-- Methods of reducing stress--Repair--Loose rivets--Replacing wasted flange plates--Adding new to old sections--Principles governing additions--Example--Strengthening lattice girder bracings--Bracing between girders--Strengthening floors--Distributing girders 107