WorldCat Identities

Construction Engineering Research Laboratories (U.S.)

Overview
Works: 757 works in 1,154 publications in 1 language and 32,446 library holdings
Genres: Handbooks and manuals 
Roles: Monitor, Originator
Classifications: TH223, E
Publication Timeline
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Most widely held works about Construction Engineering Research Laboratories (U.S.)
 
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Most widely held works by Construction Engineering Research Laboratories (U.S.)
REMR management systems--navigation structures condition rating procedures for tainer dam and lock gates by Lowell Greimann( )

3 editions published in 1995 in English and held by 306 WorldCat member libraries worldwide

The mission of the U.S. Army Corps of Engineers has been shifting from constructing new facilities to maintaining the large inventory of existing facilities. The objective of this work was to develop an inspection and rating system that uniformly and consistently describes the current condition of tainter dam and lock gate structures. The objective was achieved by conducting site visits and field investigations with experts from the U.S. Army Corps of Engineers, and by using the experts' opinions to develop the rules which form the basis of the rating system. This document provides a general description of the inspection and rating system, which includes the definition of a condition index and a description of tainter gate distresses. This is followed by a detailed description of the inspection and rules for calculating condition indexes for tainter gates. (MM)
REMR management systems--navigation and reservoir structures, condition rating procedures for concrete in gravity dams, retaining walls, and spillways by Rupert E Bullock( )

3 editions published in 1995 in English and held by 305 WorldCat member libraries worldwide

The purpose of this report is to describe a proposed system for determining a condition index (Cl) that numerically rates the condition of the concrete in a gravity dam monolith, retaining wall, or spillway on a scale of 1 to 100 by evaluating each concrete distress objectively. The rating system described herein allows the CI to be determined by the use of a visual investigation with limited equipment. The rating is related primarily to structural integrity and secondarily to serviceability. The CI procedure was developed by assigning deduct values to defects which include the following distress categories: alignment, cracking (checking, D-cracking, pattern, horizontal, vertical and transverse, vertical and horizontal, diagonal, random, and longitudinal floor), deposits, leakage, steel deterioration (corrosion stains, reinforcing, prestressing, and armor), and volume loss (abrasion, honeycomb, pop-outs, scaling, spalling, and disintegration). The deduct values are, in part, subtracted from 100 to establish the CI. Primary deduct values were determined with the intent of obtaining a CI of 40 when deterioration of a concrete monolith caused the safety of that monolith to become questionable. Nominal deduct values were assigned for defects in serviceability. The CI should be determined on at least one of each type of monolith and the more distressed monoliths. At least 20 percent of the monoliths should be rated. (MM)
Low-carbon, age-hardenable steels for use in construction : a review by R Weber( Book )

3 editions published in 1996 in English and held by 222 WorldCat member libraries worldwide

High-strength low-alloy (HSLA) steels are being used extensively in U.S. Naval shipbuilding and are being substituted for quenched and tempered HY-80 steel plate. This report examines other applications for the use of HSLA steels. They were studied to determine possible uses in U.S. Army Corps of Engineers construction projects, the current technology gaps, and the research necessary to fill those gaps. HSLA steels offer some benefits over conventional steels of the same strength level. They are virtually immune to hydrogen-assisted cracking in the heat affected zone of welds, which allows HSLA steel to be welded without preheating. However, at higher strength levels the weld metals used may require preheat to prevent weld metal hydrogen-assisted cracking. The low-carbon, fine grained microstructure that results from typical processing yields a favorable combination of excellent fabricability, strength, and toughness to HSLA steel that adds to its usefulness and gives it clear advantages over quenched and tempered construction steels. However, fatigue and buckling may limit direct design substitutions of HSLA steel in Corps new construction application. HSLA steel is resistant to hydrogen-assisted cracking but susceptible to reheat cracking, and applications requiring post weld heat treatment are not recommended. Also, local brittle zones may result in low toughness
Two-wheel desiccant dehumidification system : technology for dehumidification and improving indoor air quality( )

1 edition published in 1997 in English and held by 221 WorldCat member libraries worldwide

Thermal evaluation of piping components used in a commercial underground heat distribution system by Charles P Marsh( Book )

2 editions published in 1996 in English and held by 191 WorldCat member libraries worldwide

Guidelines for quality assurance inspection of commercial activities contracts for real property maintenance activities by James H Johnson( )

2 editions published in 1993 in English and held by 166 WorldCat member libraries worldwide

A Quality Assurance (QA) Program allows the Army to evaluate and document a contractor's work performance. it depends on a QA Surveillance Plan (QASP). The QASP, which is based on the contract Performance Work Statement, lists contractor activities and the surveillance approach, number of items to be inspected, and an Acceptable Quality Level (AQL) for each activity. This series of 12 guides will help the Contracting Officer's Representative/Quality Assurance Evaluator by defining and clarifying the inspection tasks required by the QASP, which will facilitate inspection uniformity and effectiveness. This guide discusses QA monitoring of special, improved, semi-improved, and unimproved grounds maintenance. Quality assurance, Real property maintenance activities, Grounds maintenance
Guidelines for quality assurance inspection of commercial activities contracts for real property maintenance activities by James H Johnson( )

2 editions published in 1993 in English and held by 164 WorldCat member libraries worldwide

A Quality Assurance (QA) Program allows the Army to evaluate and document a contractor's work performance. It depends on a QA Surveillance Plan (QASP). The QASP, which is based on the contract Performance Work Statement, lists contractor activities and the surveillance approach, number of items to be inspected, and an Acceptable Quality Level (AQL) for each activity. This series of 12 guides will help the Contracting Officer's Representative/Quality Assurance Evaluator by defining and clarifying the inspection tasks required by the QASP, which will facilitate inspection uniformity and effectiveness. This guide discusses QA monitoring of wastewater collection and wastewater treatment systems. Quality assurance, Real property maintenance activities, Wastewater treatment systems
Demographics of the Golden-cheeked warbler (Dendroica chrysoparia) on Fort Hood, Texas by Leslie A Jette( Book )

4 editions published in 1998 in English and held by 146 WorldCat member libraries worldwide

Reflector microphones for field recording of natural sounds by George W Swenson( Book )

3 editions published in 1998 in English and held by 145 WorldCat member libraries worldwide

Directional microphone systems for field recording of sounds in the air usually involve either a parabolic reflector to focus the sound waves on the microphone (transducer) element, or a linear array of transducers so phased as to respond preferentially to sounds from one directional sector. The latter system (the shotgun" microphone) can be analyzed in a fairly straightforward manner. The reflector system involves a structure comparable to a wavelength in linear dimension, and is therefore not susceptible to the conventional approximate methods of computation. Recently developed computational techniques now permit exact calculation of the directional responses of small reflectors. This work computed the characteristics of a number of small microphone reflectors and linear microphone arrays. A flat reflector microphone for the low-frequency range of 10 to 40 Hz was also described. The study concluded that no directional microphone can, in practice, reproduce sounds with fidelity to the sounds as emitted by the source
Investigation of fiberglass-reinforced plastic (FRP) condensate return carrier piping by Orange S Marshall( Book )

3 editions published in 1998 in English and held by 144 WorldCat member libraries worldwide

The Army operates approximately 2700 miles of heat distribution system piping, a large portion of which are used for steam and condensate return piping. The use of fiberglass reinforced plastic (FRP) carrier piping for the return of hot condensate to the boiler plant was allowed. The failure of this piping results in considerable extra expense. This report presents results of a survey that evaluated the performance of FRP condensate carrier piping on Federal installations, especially the performance of systems that have in-line cooling devices installed according to recent criteria. The survey indicated that most Federal agencies that have used FRP pipe for condensate carrier return are not satisfied with its performance because of its general failure to achieve design performance. This study concluded that, overall, the problems with FRP pipe in condensate return service and associated maintenance to correct them far outweigh the benefits derived from using FRP pipe
The CERL equipment fragility and protection procedure (CEFAPP) : experimental definition of equipment vulnerability to transient support motions by James Wilcoski( Book )

2 editions published in 1997 in English and held by 143 WorldCat member libraries worldwide

The CERL Equipment Fragility and Protection Procedure (CEFAPP) is a new testing protocol that defines the capacity of equipment to withstand seismic and other transient support motion in terms of amplitude versus frequency. The amplitude is the support motion or response spectrum amplitude at which failure occurs. Failure may comprise actual mechanical damage, temporary loss of function, acceleration or strain levels at critical locations, or any other user-defined criteria. The frequency content of support motion is critical as it determines the manner (modes) in which equipment responds and fails. CEFAPP uses narrow-band random sweep tests to determine the amplitude, frequency, and mode of failure, and records these as single data points for each failure. All failure data are plotted, and confidence bands may be plotted across the spectrum if enough failure data are gathered. CEFAPP was validated through time history, site-specific spectra, and design spectra testing of equipment. Design engineers can define predicted motions at equipment installation locations and overlay these data onto the experimentally defined equipment capacity plots to evaluate the adequacy of equipment. Equipment manufacturers can test their equipment according to CEFAPP as a design aid, because the test results define improvements needed to withstand potential demands
Development and testing of plastic lumber materials for construction applications by R Lampo( Book )

3 editions published in 1997 in English and held by 142 WorldCat member libraries worldwide

Seismic mitigation for equipment at Army medical centers : methods illustrated with examples from Madigan Army Medical Center by James Wilcoski( Book )

3 editions published in 1998 in English and held by 141 WorldCat member libraries worldwide

Medical centers may be the most critical facilities in the response and recovery phase immediately after a damaging earthquake. This report presents observations and makes recommendations for the protection of equipment, many of which support essential functions. These observations are based on a walk-down inspection of Madigan Army Medical Center conducted in December 1996. Protecting critical equipment include, ensuring an adequate load path, providing adequate anchorage, and accommodating differential movement. Observations and recommendations are presented based on effective equipment protection seen at MAMC, anchorage problems seen at MAMC, and load path concerns for well anchored equipment. Lastly several references are listed with highlights on their significance to medical facilities
Management of longleaf pine woodlands for threatened and endangered species by Mary Harper( Book )

4 editions published in 1997 in English and held by 140 WorldCat member libraries worldwide

Longleaf pine woodlands on military installations support multiple uses, including the Department of Defense (DoD) training and testing mission; threatened, endangered, and sensitive species (TES) conservation; and forest commodities (e.g., timber, pine straw) production. This report documents strategies to manage TES and their habitats on a plant community basis, using methods that apply to multiple species, and using methods that apply across the southeastern region of the United States. This report combines the pine flatwoods and sandhills communities because they have several features that link them. Ecological descriptions are provided for each community, along with available information about community occurrences on DoD installations throughout the southeast region. Known occurrences of plant and animal TES associated with
Composite grids for reinforcement of concrete structures( Book )

2 editions published in 1998 in English and held by 140 WorldCat member libraries worldwide

This research investigated a new concept that uses fiber-reinforced plastic (FRP) composite grid to reinforce concrete structural members. Prefabricated two- and three-dimensional FRP grid structures were investigated as a possible alternative to conventional one-dimensional steel reinforcement rods. Currently available commercial grid manufacturing techniques were found to be inadequate due to material flaws, poor fiber volume fraction, and low strength and stiffness. Through laboratory investigations, significant improvements in fiber volume fraction in orthogrid and isogrid systems were achieved. Laboratory-scale samples demonstrated excellent results under loading tests. Concurrent investigations showed that although the FRP grid-reinforced concrete is more flexible than steel-reinforced concrete, its post failure deformation was pseudo-ductile, characterized by continuous structural deformation through multiple low-level brittle failures before the onset of catastrophic failure. It was also found that a combined concrete/composite reinforcement structure, with a higher volume of FRP composite fraction in the concrete, would substantially increase stiffness, load capacity, and postfailure concrete containmenL This study addressed not only the possible replacement of steel reinforcement with composite grids, but also investigated enhancement of the composite application through load-sharing with steel reinforcement in a complementary fashion. Various manufacturing improvements also were explored, including the novel use of disposable toolings
Development and demonstration of advanced design composite structural component( Book )

2 editions published in 1998 in English and held by 140 WorldCat member libraries worldwide

Development and demonstration of FRP composite fender, loadbearing, and sheet piling systems by R Lampo( Book )

3 editions published in 1998 in English and held by 139 WorldCat member libraries worldwide

Traditional piling systems are inherently unsuited for harsh waterfront environments. Deterioration of wood, concrete, and steel piling systems is estimated to cost the U.S. military and civilian marine and waterfront communities over $1 billion annually. Fiber-reinforced polymer (FRP) composites represent an alternative construction material without many of the performance disadvantages of traditional materials as described above. A proposal was submitted to develop composite piling systems under the U.S. Army Corps of Engineers' Construction Productivity Advancement Research (CPAR) Program. This CPAR Project developed, tested, and demonstrated high-performance polymer composite fender, load-bearing, and sheet pile (bulkheads) systems for marine/waterfront civil engineering applications. In phase one, mechanical, operating, and physical performance requirements were established. In phase two, laboratory tests were conducted to assess the preliminary designs. Promising designs were further developed and tested. Selected fender piles that met the established requirements, as determined by the laboratory tests, were installed in a field demonstration. Development and adoption of industry consensus specifications and standards for composite piling systems was initiated. The Composites Institute and member manufacturers have promoted and will continue to promote the commercialization of the composite pilings developed under this project
Management of maritime communities for threatened and endangered species by Sophia Gehlhausen( Book )

3 editions published in 1998 in English and held by 139 WorldCat member libraries worldwide

Maritime ecosystems along the Atlantic and Gulf coasts support the military mission of the United States Department of Defense (DoD). Since the DoD mission has not required large-scale urbanization of the coast, these ecosystems also provide high quality habitat for several federally threatened and endangered plant and animal species (TES). TES conservation is compatible with military land use, as long as native plant communities remain subject to the cycles of disturbance and regeneration characteristic of the coastal zone. This report discusses four vegetation types that comprise the natural areas that support maritime TES: the overwash community, the sand dune community, the maritime shrub community, and the evergreen maritime forest community. Disruption of the natural processes of beach erosion and rebuilding through construction of seawalls, jetties, artificial dunes and beaches, roads, and urban areas is probably the most harmful human impact to maritime communities and their associated TES. Since the native maritime plant communities are relatively resilient to military training activities, conservation of this high quality TES habitat is not problematic on DoD lands. Protection of TES during critical times such as migration and the breeding season may be accommodated through seasonal or spatial restrictions on activities
Transformation of TNT to triaminotoluene by mixed cultures incubated under methanogenic conditions by Philip Hwang( Book )

3 editions published in 1998 in English and held by 139 WorldCat member libraries worldwide

2,4,6-Trinitrotoluene (TNT) is an explosive widely used by the military. Although it is no longer manufactured in the United States, large amounts of wastewater are generated annually from load, assembly, and packing (LAP), and demilitarization operations. Granular activated carbon adsorption is the standard technology for treating wastewater containing TNT and maintaining discharges within the limits established under the National Pollutant Discharge Elimination System. Previous studies evaluating biological treatment of pink water using anaerobic fluidized bed granular activated carbon bioreactors have been promising. Our objectives for this work were to study the end-products produced during the anaerobic biodegradation of TNT and study the effect of adding cosubstrates on TNT degradation. These studies demonstrated TNT was initially reduced to a variety of reduction products that culminated in the formation of triaminotoluene (TAT). TAT was susceptible to further degradation under anaerobic conditions, but its fate was not determined. The addition of ethanol and glucose enhanced the degradation of TNT, but acetate did not. These studies demonstrate, for the first time, near stoichiometric formation of TAT in a mixed culture incubated under methanogenic conditions, and demonstrate the importance of adding reduced cosubstrates to enhance the formation of TAT
Chilled water storage cooling system at Fort Jackson, SC by C. W Sohn( )

3 editions published in 1998 in English and held by 139 WorldCat member libraries worldwide

For many Army installations, the electrical demand charge of their utility bills can be as high as 50 percent of the total bill. One effective way to reduce peak electrical demand and electrical utility costs is by use of storage cooling systems. To curb the anticipated growing cost of the electrical utility at Fort Jackson, the engineers at the Directorate of Public Works (DPW), Fort Jackson, decided to install a 2.25M gal capacity chilled water storage (CWS) cooling system for the Energy Plant No. 2, which serves more than half of the Fort's cooling load. During the first year operation (1996-1997), the system saved about $0.43M in electrical utility bill charges from reduced on peak electrical demand and reduced energy consumption for cooling. This report documents the design, construction, operation, and performance of the system
 
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Alternative Names

controlled identityConstruction Engineering Research Laboratory (U.S. : 1969-1992)

controlled identityConstruction Engineering Research Laboratory (U.S. : 2000- )

CERL (Research Laboratory)

U.S. Army Construction Engineering Research Laboratories

United States. Army. Corps of Engineers. Construction Engineering Research Laboratories

United States. Construction Engineering Research Laboratories

USACERL (Research Laboratory)

Languages
English (60)