Download or read book Road and Bridge Deck Drainage Systems written by J. Marsalek and published by . This book was released on 1982 with total page 96 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Road and Bridge Deck Drainage Systems written by Jiri Marsalek and published by . This book was released on 1983 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Bridge Drainage Systems written by National Research Council (U.S.). Transportation Research Board and published by . This book was released on 1979 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt: Design principles and procedures and maintenance practices for bridge drainage systems are evaluated in this report, which also includes recommendations for improvements on current practice. Bridges should have adequate cross-slope and grade to allow the water to run quickly into drains. Where grades permit, some states carry all the water to catch basins at the ends. An inlet box may be used to collect the runoff. Some states have detailed procedures for determining drain spacing. Debris can be controlled by keeping it out of inlet boxes, accepting and storing it so it cannot go through the system, or transporting it through. Maintenance at regular intervals is the key to the success of a drainage system. Disposal of run off water can be a simple straight drop onto the land or water beneath the bridge or a pipe system to carry the water to the local sewer system. Current practices indicate that deck cross-slope and grade should be less than 2% and 0.5% respectively; that bridge drains may be holes through the deck, fabricated inlet boxes, or catch basins at the ends of the bridge; that inlet areas should be as large as possible; that pipes should have a minimum diameter of 6 in., a miminum radius of 18 in., and a minimum slope of 2%; that cleanout plugs and elbows should be easily accessible; that there should be improved communication between designers and maintenance personnel; and most importantly, that bridge drainage systems should be regularly and carefully inspected and serviced.
Download or read book Bridge Deck Drainage Guidelines written by and published by . This book was released on 1986 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt: Bridge-deck design, at present, often includes costly bridge-deck drainage provisions. Many bridge engineers have questioned the need for bridge-deck drainage appurtenances, at least to the extent presently included in typical bridge design. This document presents criteria to determine if bridge drainage scuppers and drains are required. A design nomograph allows a rapid decision to be made. A key variable, design rain intensity, is analyzed: the rational method is reviewed and new methods for setting design rain intensity are presented that consider hydroplaning and driver vision. Regardless of the need for scuppers, bridge-end drainage is necessary, and methods are given. If scuppers are needed, this document provides sound drainage design practice for bridge drainage.
Download or read book Road and Bridge Deck Drainage Systems Part II Laboratory Investigations written by Ontario. Ministry of Transportation and Communications. Research and Development Branch and published by Downsview, Ont. : Research and Development Branch, Ontario Ministry of Transportation and Communications. This book was released on 1986 with total page 45 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Design of Bridge Deck Drainage written by G. Kenneth Young and published by . This book was released on 1993 with total page 123 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Bridge Deck Drains written by I. R. Aarset and published by . This book was released on 1981 with total page 152 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Bridge Drainage Systems and Discharge to Waterways written by Jeremy Nielsen and published by . This book was released on 2023 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The intent of this project was to contact other agencies to identify their typical design practices and how they address bridge deck drainage. If available, the project sought to learn standard best practices that could be directly applied to Minnesota infrastructure plans to standardize and improve drainage detailing and design practices. In reviewing the online survey and follow-up interview results with the TAP, no concise, ready to implement solution was found and many of the agencies are addressing similar concerns and lack fully developed standards or guidance documents. Although no single specific solution was identified, several key lessons were identified in the interviews which should be incorporated into further investigation and development of standards.
Download or read book Bridge Deck Drainage Evaluation of KDOT s Current Design Guidance written by Alexander Michalek and published by . This book was released on 2022 with total page 92 pages. Available in PDF, EPUB and Kindle. Book excerpt: Proper drainage of bridge decks is essential for vehicle safety and bridge sustainability. The evaluation of Kansas Department of Transportation (KDOT) design guidelines could reduce the likelihood of future deck drainage problems. Therefore, this research investigated current bridge deck drainage design guidelines and related literature and surveyed 22 Departments of Transportation (DOTs) to identify deck drainage issues, solutions, designs, and guidance. This study utilized a scaled physical model and varying downspout shapes and sizes to investigate the hydraulic performance of current KDOT deck drainage design and evaluate grate efficiency and lateral spread. Experimental variables included deck cross slope, longitudinal slope, and approach discharge. This study also compared a curved vane grate to the current KDOT bar grate to determine differences in drainage efficiency. An erosion rate test was performed between the two grate types to determine if changing from a rectangular vane to a curved vane could increase cleanout potential, thereby alleviating problems related to inlet clogging. Experimental results indicated increasing the downspout size from 8 inches to 10 inches or changing the downspout shape from circular to square could increase drainage efficiency with no negative impacts to performance. The curved vane grate showed similar hydraulic performance (i.e., efficiency) to the KDOT rectangular vane grate, and erosion results indicated that the curved vane grate performed similarly to the rectangular grate for cleanout of accumulated debris within the grate. Although experimental results indicated similar performance of rectangular and curved vane grates, DOT survey results showed superior in-field performance of curved-vane grates.
Download or read book Drainage of Highway Pavements written by United States. Bureau of Public Roads. Bridge Division. Hydraulics Branch and published by . This book was released on 1969 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Design of Urban Highway Drainage written by United States. Federal Highway Administration. Implementation Division and published by . This book was released on 1979 with total page 292 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Bridge Drainage Systems written by and published by . This book was released on 1979 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Highway Drainage Guidelines written by American Association of State Highway and Transportation Officials. Task Force on Hydrology and Hydraulics and published by AASHTO. This book was released on 2007 with total page 50 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Highway Drainage Guidelines provides a consolidated overview of highway hydraulic design and discusses possible hydrology problems in the following areas: Hydraulic Considerations in Highway Planning and Location; Hydrology; Erosion and Sediment Control in Highway Construction; Hydraulic Design of Highway Culverts; The Legal Aspects of Highway Drainage; Hydraulic Analysis and Design of Open Channels; Hydraulic Analysis for the Location and Design of Bridges; Hydraulic Aspects in Restoration and Upgrading of Highways; Storm Drain Systems; Evaluating Highway Effects on Surface Water Environments; Highways Along Coastal Zones and Lakeshores; Stormwater Management; Training and Career Development of Hydraulics Engineers; Culvert Inspection, Material Selection, and Rehabilitation; Guidelines for Selecting and Utilizing Hydraulics Engineering Consultants.
Download or read book Public Roads written by and published by . This book was released on 1993 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Study of Bridge Deck Drainage written by J. Marsalek and published by . This book was released on 1981 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Hydraulic Performance Small Scale Bridge Deck Drains written by Qin Qian and published by . This book was released on 2012 with total page 98 pages. Available in PDF, EPUB and Kindle. Book excerpt: Efficient removal of stormwater runoff from bridge deck surfaces is an important safety issue. This study investigates hydraulic performance characteristics of a new type of rectangular bridge deck drain. A physical modeling study was conducted to evaluate the hydraulic performance of the innovative rectangular bridge deck drain as a function of the approach discharge, different drain configurations, and bridge characteristics. Experiments included different numbers of open drains in series for variable approach discharge cross slope and longitudinal slope. Measurements included gutter flow depth (Y) and ponding width (T) at different stations along the deck, and the capture discharge and bypass discharge. A model equation is presented for predicting the capture discharge as a function of drain size (L+W), the number of open drains (N), Manning's coefficient (n), depth of approached gutter flow (Y), longitudinal slope (S0), and cross slope (Sx). For experiments considering one through five drains in series (1-5 drains), the rating curve for each individual drain is the same when the drain size is 4 by 8 inches; however, the rating curve decreases slightly with successive drains when the drain size is 6 by 8 inches.
Download or read book Gravel Roads written by Ken Skorseth and published by . This book was released on 2000 with total page 112 pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of this manual is to provide clear and helpful information for maintaining gravel roads. Very little technical help is available to small agencies that are responsible for managing these roads. Gravel road maintenance has traditionally been "more of an art than a science" and very few formal standards exist. This manual contains guidelines to help answer the questions that arise concerning gravel road maintenance such as: What is enough surface crown? What is too much? What causes corrugation? The information is as nontechnical as possible without sacrificing clear guidelines and instructions on how to do the job right.
