The vast network of roads, highways, railroads and bridges is so much a part of our way of life that it often comes as a shock when a part of that system fails. However, the condition of a vital link in that system "our bridges" has reached the critical stage. Bridges are subject to the adverse elements of weather, heavy traffic, deicing chemicals (in mountain region), accumulated debris and other factors, which may cause deterioration. Many of the bridges were designed and built many years ago to carry fewer and lighter cars and trucks. Without periodic inspection, deterioration may be undetected until some degree of failure occurs resulting in costly repairs or a catastrophe. Proper inspection combined with preventive maintenance can extend the useful life of all types of bridges.
Engineers at MSV have participated in inspections of wood, concrete and steel bridges over rivers, highways, railroads, and lakes both short and long spans worldwide including India. To insure that every element of the structure receives attention, detailed inspection forms are prepared prior to any fieldwork. Our engineers have crawled and climbed bridge members - probing, sounding, testing, surveying and measuring. Existing conditions are recorded by comments, sketches and photographs. Checks are made for signs of corrosion, cracks, loose bolts or rivets, deck conditions and rotted wood member. Where material strength may be in doubt test samples can be removed and tested or non-destructive testing employed to determine properties of materials where applicable dyes, x-rays and sonic detectors are employed to detect metal faults. While complete inspection is normally accomplished by MSV staff, some specialists are utilized for x-ray and underwater work.
Based upon the facts recorded in the detailed field inspection, design specialists analyze the data to determine the structural rating of the bridge elements. Recommendations for structural strengthening or maintenance are submitted for implementation. Normally all of the findings are summarized in a written report which indicates not only the needed repairs, maintenance, or administrative actions such as load posting, but the estimated cost, priorities and other information necessary to develop a sound program of remedial work.
THE SERVICES PROVIDED INCLUDE :
• Non-destructive Testing
• Ultra-Pulse velocity Test
• Rebound Hammer Test
• Carbonation Testing
• Sonic Predictors
• Chemical Analysis
• Core Test
• Evaluation of Distress Level
• Remedial Measures for repairs & strengthening
• Designs, drawings, specifications, BOQ and Cost Estimate for Repairs & Strengthening
• Construction Management and Construction Supervision