Engineering Commons^™

The Influence Of Retarding Admixtures On Volume Changes Of Concrete, Charles F. Scholer

JTRP Technical Reports

No abstract provided.

Improving Embankment Design And Performance: Prediction Of As-Compacted Field Strength By Laboratory Simulation : Interim Report, John L. Peterson

JTRP Technical Reports

No abstract provided.

Evaluation Of Continuously Reinforced Concrete Pavements In Indiana, Asif Faiz

JTRP Technical Reports

No abstract provided.

Comparative Travel Patterns From Four Work Trip Data Sources, Wing-Kwong Law

JTRP Technical Reports

No abstract provided.

Governmental Reorganization And Metropolitics: Determinants Central To A Normative Theory Of Metropolitan Planning, Woodrow L. Moore

JTRP Technical Reports

No abstract provided.

Study Of Collector-Distributor Roads, Ronald S. Hansell

JTRP Technical Reports

No abstract provided.

Limiting Strain As A Failure Criterion For Bituminous Mixtures, Raymond Doran Pavlovich

JTRP Technical Reports

No abstract provided.

Traffic Speed Report No. 94 : Progress Report, Ahmed Atef Gadallah, George K. Stafford

JTRP Technical Reports

No abstract provided.

History Of The Interstate System In Indiana: Volume 4 - Chapters Vii And Viii: Cost, Funding And General Benefits, David Alan Ripple

JTRP Technical Reports

No abstract provided.

Pore Size Distribution Of Compacted Soils After Critical Region Drying, Rakhishwar Nath Bhasin

JTRP Technical Reports

No abstract provided.

Stabilization Of Soils For Erosion Control On Construction Sites : Interim Report, George Macha

JTRP Technical Reports

No abstract provided.

Evaluation Of The 55 Mph Speed Limit, Tim Mitchell Borg

JTRP Technical Reports

No abstract provided.

Shale Classification Tests And Systems: A Comparative Study : Interim Report Phase 1, David Robert Chapman

JTRP Technical Reports

No abstract provided.

An Evaluation Of Several Mulch Materials On Landscape Plant Growth, Weed Control, Soil Temperature And Soil Moisture : Interim Report, Philip L. Carpenter

JTRP Technical Reports

No abstract provided.

Stabilization Of Clay Soils Against Erosion Loss : Technical Paper, Mitsunori Kawamura, Sidney Diamond

JTRP Technical Reports

No abstract provided.

History Of The Interstate System In Indiana: Volume 1 - Chapters I-Iv: Development Of The National Program, David Alan Ripple

JTRP Technical Reports

No abstract provided.

Reconstruction Work Upon Solima Pier, K Alibhai

Tanzania Journal of Engineering and Technology (TJET)

During the assessment of the manuscript, it was observed that the paper does not include an abstract. The document proceeds directry to the main content without providing a separate abstract that summarize the study's objectives, methodology, key findings and conclusions

Industrial Projects Recommended By The Faculty Of Engineering Udsm, W Kreuser

Tanzania Journal of Engineering and Technology (TJET)

During the assessment of the manuscript, it was observed that the paper does not include an abstract. The document proceeds directry to the main content without providing a separate abstract that summarize the study's objectives, methodology, key findings and conclusions

Construction Of Pile Foundation For Hall Seven, Udsm, K Swai

Tanzania Journal of Engineering and Technology (TJET)

During the assessment of the manuscript, it was observed that the paper does not include an abstract. The document proceeds directry to the main content without providing a separate abstract that summarize the study's objectives, methodology, key findings and conclusions

Multiple Uses Of Utah Irrigation Canals: Cache County As A Case Study, James J. Kennedy, Komain Unhanand

Reports

Irrigation use is an obvious benefit of Utah canals that has been recognized for over 100 years. This study attempts to illustrate other, less obvious, uses. the major use examined was recreational, but canals are presently functioning as storm drainage systems and have potential for diverting flood crests in many river systems.

Recreational use of canals falls into two categories. There is passive use such as its landscape values, affects on creating shade and bird-wildlife habitat, etc., that is difficult to quantify but no less important than active canal use such as tubing, hiking, bank-play, bicycling, etc. We selected several …

Development And Preliminary Application Of Mathematical Models To The Weber Basin, W. J. Grenney, D. S. Bowles, M. D. Chambers, J. P. Riley

Reports

The adoption of stream standards, whether for direct application or for the establishment of realistic effluent standards, creates a need to predict the impact of pollution loads on river water quality during critical flow periods or as the result of future user demands. Because of the complexity of aquatic systems, mathematical models are an excellent medium for bringing together the state-of-the-art knowledge from a variety of disciplines into a form which can be readily applied to practical problems. Applying a mathematical model to a river system has the added advantage of providing a structure for the systematic consideration of the …

Optimal Highway Safety Improvement Investments By Dynamic Programming [Dec. 1974], Jerry G. Pigman, Kenneth R. Agent, Jesse G. Mayes, Charles V. Zegeer

Kentucky Transportation Center Research Report

The process of determining which projects to implement under a given budget, and which to defer until later, is central to the planning and management of highway systems. With a limited budget for construction, maintenance, and safety improvements, investments which will produce the optimal benefits must be chosen. This is often impossible to accomplish without the aid of a computer because of the complexity of the problem. Dynamic programming has been tested and verified as an efficient method for selecting priority projects to derive maximum benefits. The applicability of dynamic programming to the safety improvement program is demonstrated in this …

Voidless Concrete Mixtures For Bridge Decks, Assaf S. Rahal

Kentucky Transportation Center Research Report

The purpose of this study was to modify concrete mix-design formulas to supplant all water over and above that needed for hydration with a non-evaporable material -- thus producing a no-void concrete. It was adjudged that a water-cement ratio of 0.244 would be practical for hydration of the cement. Several polymeric materials, asphalts, and oils were used to replace the excess mixing water. Success was achieved using two latexes and one epoxy. The use of these materials in concrete resulted in improved strength, reduction of air voids and permeability, and enhancement of resistance to corrosive chloride salts.

Accidents On Rural Interstate And Parkway Roads And Their Relation To Pavement Friction, Rolands L. Rizenbergs, James L. Burchett, John A. Deacon, Cass T. Napier

Kentucky Transportation Center Research Report

Friction measurements were made with a skid trailer at 70 mph (31 m/s) on 770 miles (1240 km) of rural, four-lane, controlled-access routes on the interstate and parkway systems in Kentucky. Each construction project was treated as a test section. Accident experience, friction measurements, and traffic volumes were obtained for each. Various relationships between wet-weather accidents and skid resistance were analyzed. Averaging methods were used as a means of developing trends and minimizing scatter. A moving average for progressively-ordered sets of five test sections yielded more definite results. The expression of accident occurrence which correlated best with skid and slip …

Identification Of Hazardous Rural Highway Locations, John A. Deacon, Charles V. Zegeer, Robert C. Deen

Kentucky Transportation Center Research Report

An effective procedure was determined for identifying hazardous rural highway locations based on accident statistics. Multiple indicators of accident experience that are necessary include the number of fatal accidents, the total number of accidents, the number of effective-property-damage-only accidents, and the accident rate. Critical levels of these four indicators should vary from state to state depending on the nature of the local safety improvement program as well as local traffic and roadway conditions and prevailing attitudes toward highway safety. Specific recommendations are given for use in Kentucky. Critical accident rates are established using quality control procedures.

To identify hazardous highway …

Rock Evaluation For Engineered Facilities, D. J. Hagerty, Robert C. Deen, M. W. Palmer, C. D. Tockstein

Kentucky Transportation Center Research Report

The need for comprehensive information on the characteristics and behavior of earth materials has been recognized for many years, perhaps for as long as significant construction has taken place in and on the surface of the earth. In recent years, however, the magnitude and complexity of engineered construction has greatly increased, resulting in a corresponding increase in the need for information on the engineering properties of soil and rock materials, Direct testing of soil and rock can be utilized to furnish necessary information. However, both field and laboratory testing can be extremely expensive, particularly where testing must include applications of …

Adaptation Of Aasho Interim Guide To Fundamental Concepts, Herbert F. Southgate, Robert C. Deen, James H. Havens

Kentucky Transportation Center Research Report

Using 1971 vehicle classification counts and truck weights from nine Kentucky locations, equivalent axleloads (EAL's) were calculated by several methods. Apparent discrepancies led to a review of axleload equivalency factors used to estimate either EWL's (equivalent wheel loads) or EAL's.

Axleload equivalencies are determined as the ratio of the number of repetitions of a standard or reference load to the number of equivalent (damage-wise) repetitions of the load in question. The choice of equivalency factors can result in as much as a 40-percent difference in calculated EAL's. Most of Kentucky's traffic is made up of axleloads less than 80 kilonewtons …

Evaluation And Modification Of The Traffic Noise Prediction Procedure For Kentucky Highways, Kenneth R. Agent, Charles V. Zegeer

Kentucky Transportation Center Research Report

Approximately 270 noise-level recordings were obtained at 39 highway sites and compared with the noise-level predictions obtained by the procedure outlined in NCHRP Report 117. The measured noise levels were computed in terms of the A-weighted L₁₀ value (level exceeded 10 percent of time) and then compared to the predicted noise levels. A significant discrepancy was found between predicted and measured noise levels; generally, the predicted values exceeded the measured values. Average error per location was 4.8 dBA; the maximum error was 13 dBA. A nomograph was devised to correct the predicted value; this nomograph involves observer-to-roadway distances, truck …

Fatigue Analysis From Strain Gage Data And Probability Analysis, Robert C. Deen, James H. Havens

Kentucky Transportation Center Research Report

The Central Bridge over the Ohio River between Newport, Kentucky, and Cincinnati, Ohio, was completed in 1891 and in 1972-73 was considered to be in danger of fatigue failure. A series of investigations were undertaken to determine the likelihood of failure and to estimate the time of probable failure. During the investigation, a methodology was developed to determine fatigue damage from a probability analysis of traffic data by reconstituting or synthesizing the load (traffic) history of bridges. Strain gage data obtained with Prewitt scratch gages and SR-4 resistivity gages were used to evaluate fatigue damage incurred by the Central Bridge.

Relationships Between Roadway Geometrics And Accidents, Kenneth R. Agent, Robert C. Deen

Kentucky Transportation Center Research Report

Statewide average and critical rates of accidents were determined from 1970-1972 Kentucky accident records for each type of rural highway. Accident data, obtained from state police computer tapes, were summarized to give the number of accidents on each highway type as well as information on accident severity, road surface conditions, light conditions, road character, and type of traffic control. Four-lane undivided highways had the highest average accident rate; parkways (toll roads) had the lowest rate. The severity of accidents was related to types of accidents, highways, and traffic control and to safety belt usage. Accidents involving pedestrians were the most …