... AASHTO design specifications . The limit states implied in the AASHTO Manual are those of the current ( 1989 ) AASHTO design specification . The bridge may be rated either by the Allowable Stress Design ( ASD ) or by the Load Factor ...
Guidelines for Optimizing the Risk and Cost of Materials QA Programs
... QA costs and the potential cost impacts related to material non-conformance to ... plan. The model may be used to think through the use of advanced material ... template tool defines five levels of QA effort performed by the DOT based on ...
Prestress Losses in Pretensioned High-strength Concrete Bridge Girders
... Specifications method ( 2 ) , and the PCI - BDM method ( 4 ) . In the eleventh edition of the AASHO ( currently called AASHTO ) Specifications , total losses were estimated as a sum of individual ... AASHTO - LRFD Bridge Design Spec-. 11.
Traffic Data Collection, Analysis, and Forecasting for Mechanistic Pavement Design
... load spectra so that readers can understand what is important to ensure accurate load estimates, why some data- collection plans are better than others, and why specific data are requested for developing accurate load estimates. Section ...
Extending Span Ranges of Precast Prestressed Concrete Girders
... Caltrans , Standard Specifications , California Department of Transportation , Sacramento , CA , July 2000 . 2 ... 15. Caltrans , Standard Plans , California Department of Transportation , Sacramento , CA , July 2000. ( 15 ) APPENDIX A ...
Information Technology for Efficient Project Delivery
... Papacosta , C.S. and P.D. Prevedouros , Transportation Engineering and Planning , Second Edition , Prentice Hall , Englewood Cliffs , N.J. ( 1993 ) . 5. A Summary , Transportation Programs and Provisions of the Clean Air Acts Amendments ...
Thermally Sprayed Metal Coatings to Protect Steel Pilings: Final Report and Guide
... Grade 50 steel over a 100 - percent shot / prepared surface , and 10 for both steel alloys on 100 - percent grit ... ASTM A36 and ASTM A572 Grade 50 steel panels abrasive blasted in the same man- ner . The tensile strength of ASTM A36 ...
... ASTM D - 4417 , Method C , " Field Meas- urement of Surface Profile of Blast Cleaned Steel . " Methods Surface preparation in a fabricating shop is much easier than in the field if for no other reason than the steel is readily ...
Application of LRFD Bridge Design Specifications to High-strength Structural Concrete: Shear Provisions
... AASHTO LRFD Bridge Design Specifications (also referred to as “LRFD specifications”) is a barrier to advancements in highway design and construction practice.The relaxation ofthis limitation would enable bridge members of a given depth ...
... concrete . In addition , silica fume could be used effectively in thin overlays ... concrete overlay was placed in Oklahoma in 1976. By the end of 1978 , a total ... Polymer Concrete Overlays Polymer concrete is concrete in which the portland ...
... crack pro- thetic particle Carro - gression ? ion potential ( G ) Core Please de- Moms - Prography scribe Other WINO NOT RAILROADS LOUISVILLE & NASHVILLE RR CHICAGO & NORTH WESTERN TRANS CO SOUTHERN PACIFIC TRANSPORTATION CO No Yes -- Pro ...
Safety Management Systems: A Synthesis of Highway Practice
... Safety 2000. Washington State ( 14 ) . ( Source : Washington Traffic Safety ... MANAGEMENT SYSTEM Washington State The state of Washington's commitment to ... elements of highway safety : the vehicle , the human , and the roadway . The ...
... du Pont de Nemours and Co. , Wilmington , Delaware , May 1978 . Bower , G.R. , " Bearing Pads of Teflon " , A Report Presented to the 1970 Regional Meetings of the AASHTO Committee on Bridge and Structures , E.I. du Pont de Nemours and ...
Guidance for Implementation of the AASHTO Strategic Highway Safety Plan: A guide for reducing work zone collisions
... fourth edition. Washington, D.C. 2001. http://www.transportation.org/download/ContractPrimer.pdf. American Association of State Highway and Transportation Officials, Roadside Design Guide, third edition. Washington, D.C. 2002. American ...
Countermeasures to Protect Bridge Piers from Scour
... design of anchorage to concrete . NCHRP Proj- ect 17-10 proposed a revision to the 1994 AASHTO Sup- ports Specifications and addressed the issue of anchor bolt design , among other topics ( 10 , 11 ) . On the issue of anchor bolt design ...
Rock-socketed Shafts for Highway Structure Foundations
... unit side resistance ; ratio of rock mass modulus to modulus of intact rock ; empirical adhesion factor relating unit side resis- tance to uniaxial strength of intact rock . y = total unit weight of rock or soil . y ' = effective unit ...
Seismic Analysis and Design of Retaining Walls, Buried Structures, Slopes, and Embankments
... design standpoints: flexible and rigid. Flexible culverts and pipes typically are composed of either metal (for example, corrugated metal pipe ... design, current AASHTO LRFD Bridge Design Specificationsrequire as a minimum the following main ...
Simple Performance Tester for Superpave Mix Design: First-article Development and Evaluation
... force . Aberrancy base rate . = Bias of x = x / xn- Wind analysis constant . = Response spectrum modeling parameter . CE = Vehicular centrifugal force . C ' = Soil influence coefficient for moment . = Scour coefficients that account for ...
Comprehensive Specification for the Seismic Design of Bridges
... Task 2. Based on the findings of Task 1, develop conceptual LRFD design ... (3) acceleration hazard maps and spectral ordinate maps; (4) spatial ... commentary, and proposes a detailed work plan for the remainder of the project. Following ...
Cost-effective Practices for Off-system and Local Interest Bridges
... AASHTO Green Book is fol- lowed by 56% of state and 70% of county ... 18 (H 20), the number representing the gross vehicle weight in metric tons ... 18 (HS 20). In recognition of heavier truck loads as routine vehicles and as special ...
Guidelines for Design and Operation of Nighttime Traffic Control for Highway Maintenance and Construction
... Wisconsin DOT sug- gested that a chapter on traffic control is needed for the Wis- consin DOT's facilities development manual (3), which will supplement and cross-reference the MUTCD. Much of what the Wisconsin DOT envisions for this ...
Design and Construction Guidelines for Geosynthetic-reinforced Soil Bridge Abutments with a Flexible Facing
... weather require additional protection. The cable wrapping or protection sys ... weather-tight space for the cable. These provisions must be made in a manner that ... (RLO), specified in the following proportions by weight: lead oxide raw ...
Guidelines for Concrete Mixtures Containing Supplementary Cementitious Materials to Enhance Durability of Bridge Decks
... 1-year ASTM C 1293 test. Figure S2.1 together with the background in the ... chemical admixtures should be reviewed for compliance with the respective AASHTO ... Worksheet S2.10 has been provided to help with this process. After all the ...
Accelerated Laboratory Rutting Tests: Evaluation of the Asphalt Pavement Analyzer
... compaction method. For this analysis, the authors lumped the field-cut beams and cores into one category called field compaction and compared results with gyratory-compacted samples. Results indicated that rut depths for the field- and ...
Maintenance Issues and Alternate Corrosion Protection Methods for Exposed Bridge Steel
... SSPC SP5 Near White metal SSPC SP10 YO NO B.9 What type of spray was specified ? ( Please check all that apply . ) Flame YO NO Electric Arc YO NO Manufacturer's Recommendations YO NO Not sealed and / or painted YO NO C.6 Have existing ...
Aggregate Properties and the Performance of Superpave-designed Hot Mix Asphalt
... (AASHTO T176) is used to identify the quantity of clay-like fines in a sample of fine aggregate. Clay-like fines may ... T88, “Particle Size Analysis of Soils.” Alaska does not specify a test to address plastic fines. For the states specifying ...
Design Speed, Operating Speed, and Posted Speed Practices
... AASHTO's A Policy on Geometric Design of Highways and Streets (Green Book) ... Green Book, MUTCD, and other references use various aspects of speed (e.g., design speed ... 18, the Texas Transportation Institute compiled and analyzed industry ...
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