This is so that the repair mortar will bond and blend with the parent concrete without differential shrinkage occurring. When a bridge is too long to be supported by abutments alone, piers or. Protection from numerous environmental factors that can cause concrete pile degradation. Repair and strengthening of bridge substructures epublications. This document is available to the public through reinforced concrete bents, cantilever bents the national technical information service, springfield, virginia 22161. An asterisk indicates that additional information and suggested formulas to be used in quantity calculations follow the table. Revised prestressed concrete ibeam details std drawing eng memor07e. Brennan can provide several specialty repairs that you wont find anywhere else. The specimen is a onequarter 14 scale model of the actual bridge pier. The only foundation repair methods allowed use steel piers. Then the barge floated over to the pier location, and the winches lowered the assembly into place.
Fhwa bridge maintenance manual substructure pdh online. Reinforced masonry pier construction 1 of 3 home builders guide to coastal construction technical fact sheet no. In this paper, a new method for the construction of bridge piers is proposed. Slight curvature can be allowed, but must be considered on a casebycase basis. Youll probably have to do it all over again in 310 years and foundation repair is more expensive the second time. Repair of concrete in highway bridges a practical guide. The bridge, built in 1952 was exhibiting serious spalling on the columns. Bridge detail sheets are backed by engineering analysis, calculations, crash testing and are approved by nhdot administrators and the federal highway administrration fhwa. Bridge detail manual colorado department of transportation. Standard details shall be considered to be a pinned connection to the superstructure. Timber pile repair concrete pile repair concrete segment lengths 1m6m 322ft diameter 0. Bill palmer is editor at large of hanley woods commercial construction group, which includes digital and print versions of concrete construction, concrete surfaces, the concrete producer, public works, and masonry construction. A horizontal crack along the face of the pier cap, 75 to 100 mm 3 to.
Customers typically choose concrete pier because it seems like a cheaper foundation repair option, but its not. Reduced scale experiments were performed on a reinforced concrete pier of a bridge to check the validity of the proposed method. The pier is approximately 800 mm wide x 7 m long x 3. This bridge pier is one of two independent piers designed and constructed according to the standard design specification code that was in effect until 1980. The following article is written with enough information about resin injection systems to help protect the owner from the misuse or improper installation of an injection systems. Problems often found in concrete bridge seats include the.
This new method utilizes precast prestressed concrete ppc panels as formwork in order to increase the efficiency of construction. January 25, 2019 purpose this manual includes stepbystep repair procedures for use on new and existing concrete members cast. Others who use the nhdot documents do so at their own risk. Repairs to concrete defects discovered after stripping should be repaired as soon as possible. New miscellaneous bridge standards drawings english memoi12e.
Bridge piers placed by tremie concrete construction magazine. Culvert and drainage standard drawings english memoi11e. Repair process problems often found in concrete bridge seats include the deterioration of concrete and the corrosion of reinforcing bars. In coastal areas, masonry pier foundations are not recommended in v zones with erodible soils, or in a zones subject to waves and erosion use pile. Placing the 600 cubic yards of concrete required for each footing took about 24 hours. Maintenance, repair, and rehabilitation of concrete bridges the 379ftlong station street bridge in kankakee, ill.
Evaluation of appropriate maintenance, repair and rehabilitation methods for iowa bridges april 2003 sponsored by the iowa department of transportation highway division and the iowa highway research board iowa dot project tr 429 final. Such problems are caused by moisture and contaminants falling through leaking deck joints. Nysdot elected to use aquawrap 2277 concrete repair system to perform the. Previously, he worked for the american concrete institute for 10 years as engineering editor and director of. These documents are prepared by the nhdot for use on nhdot projects. This page contains a listing of all the approved bridge detail bd sheets that have been issued. Bridge construction manual guidelines to project supervisors bridge engineering page 4 revision. An efficient method for the construction of bridge piers. Castinplace, grouting, epoxy injection, precast blocks and polymer bearing pads are just a few of the typical repair techniques employed by our crews to correct defective concrete. Underwater bridge repair, rehabilitation, and countermeasures. Pier configurations shall be determined by providing the most efficient cast inplace concrete pier design, unless approved otherwise. This practical guide covers all aspects of concrete bridge repair in sufficient depth to. Wisconsin department of transportation bridge manual.
Summary of types of concrete bridge piers defects and evaluation tools. Development of knowledge base of concrete bridge maintenance. Chapter 5 quantities calculations 5 2 apr 2007 rev sept 2015 estimated quantities for the more common bridge associated bid items shall be based on the units and accuracy shown in the following table. Barriers, parapets, and railings minnesota department of. On piers the extent of the coating may depend, to some extent, on appearance. Repair of concrete in highway bridges a practical guide trl. A brief introduction to issues related concrete bridge repair.
An evaluation of repair methods for cantilever bridge piers. A 28meter boom pump on a barge, fed by a 32meter boom pump on the old bridge, pumped concrete into one of 12 standpipes inserted into the submerged footing form. Underwater bridge repair, rehabilitation, and countermeasuresnhi course 091a reference manual iii 62. Bd sheets are intended to show how the typical parts that make up a bridge are to be detailed. The manual also presents standard and experimental protection, repair, and rehabilitation. Repair of concrete in highway bridges a practical guide the selection of a repair strategy and materials is one of the most important steps in the repair and rehabilitation programme. Underwater bridge repair, rehabilitation, and countermeasures publication no. Bridge lines, bridge fonts pdf, 267kb bridge font true type font format. The next part of the sheet number is a two letter id which is used to group sheets with a similiar theme ex. The railway bridge crosses over a 2 lane access ramp to the victoria bridge and the lanes are quite narrow. Bridge repair, cantilever bridge piers, no restrictions.
A bridge floor is the entire length of the bridge from the roadway side of the mudwall or pile cap to the other roadway side of the mudwall or pile cap and the entire width from one coping edge across to the other coping edge. From pier shafts over major rivers to bearing seats, there are many unique ways to repair bridges that will minimize track interruptions. Bridge detail sheets document library bridge design. The guide includes all aspects of concrete bridge repair, starting with the concrete deterioration mechanism and the inspection of bridges through to carrying out remedial work and monitoring the repairs. Ksdot 2008 discusses the repair of bridge piles and piers. While this manual contains information on diving equipment, it is neither intended to train personnel in.
New prestressed concrete slab beam std drawings english memoi10e. Replacement of strands or bars is encountered, contact the. The repair was accomplished for less than original cost estimates. Damaged concrete has been removed by manual and mechanicallyassisted. The cdot bridge detailing manual provides the policies and procedures for developing and checking contract plans and quantities. Epoxy concrete injection epoxy wood injection, epoxy crack repair epoxy structural concrete and wood repair waterproofing.