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Publications for your search query: maintenance

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Books (241):


Innovative overhead line masts for the energy transition, taking into account design, technical and economic aspects. Research project P 1101 / S 024/10218/14. Online resource
Ungermann, Dieter; Patschin, Alena; Mäckler, Christoph; Seiler, Karen

The politically accelerated energy transition requires numerous expansion and grid reinforcement measures. For overhead line masts made of steel, truss-like lattice masts are still used almost exclusively, which were manageable 100 years ago in terms of planning, production technology and mathematics. Today these are often assessed as a visual disturbance or impairment of the aesthetics of the landscape and the townscape. This research project aims to improve the image of overhead lines and make them a necessary and accepted part of our industrial society. The aim is to develop a new type of overhead line mast made of steel, which, in addition to meeting the highest technical and economic requirements, also corresponds in its design to the time of the energy transition. The processing was therefore carried out on an interdisciplinary basis by engineers and architects. In this research report, the basics of overhead line construction as well as electrical and mechanical requirements for the development of the mast construction are presented. Based on this, various developed optimization approaches for the lattice mast construction are presented. For the development of the innovative shape for the overhead line pylon, four variants of the overhead line pylon designs are explained and the detailed investigations in the form of FE analyzes for the preferred variant are presented. With the experimental approach, the load-bearing behavior of the new tube-in-tube press connection is then analyzed. All developments flow into the profitability analysis of the innovative construction with consideration of the series production. As part of the investigations, an attractive and economical alternative to the previous lattice mast constructions was created. The aim of the research project was thus achieved.

Tags:
Energy transition, electricity supply, overhead line mast, lattice mast, steel framework construction, optimization, mast construction, draft, design, coloring, construction, innovation, new development, construction costs, economy, construction time, maintenance, comparison, energy turning point, electricity supply, overhead line mast, lattice tower, steel truss construction, optimization, mast construction, design, design, color scheme, structural design, innovation, new development, building costs, economy, construction time, maintenance, compromise,

Research Association for Steel Application 2020, XXIX, 255 pp., Fig., Tab., Lit.
ISBN: 978-3-946885-72-6

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Influence of different maintenance methods on embankments on fauna and flora
Richner, N .; Thiel-Egenter, C .; Nienhuis, C .; Schnyder, J.

The embankments along the modes of transport are valuable habitats and networking axes for animals and plants. However, these valuable embankments are not optimally maintained in terms of the fauna and flora that occur there. This study examines alternative maintenance methods and checks whether they are more environmentally friendly and economically viable. For this purpose, four different maintenance techniques are used on each of the seven areas. These include combinations of flails or mowing with vacuuming, whereby the clippings are partially left for several days before vacuuming. The effect on fauna and flora is examined. For the fauna, the number of damaged grasshoppers and caterpillars is determined with dummies and on animals present on site. For the flora, the existing seeds are counted after maintenance with the help of suction samples. In addition, a cost-benefit analysis of the various maintenance methods is carried out. Based on the results, recommendations are made for nature-friendly maintenance.

Tags:
Traffic route, roadside, edge area, embankment, vegetation, entertainment measure, influence, impact, flora, fauna, small animal, animal world, habitat, nature conservation, investigation method, test area, test result, cost-benefit analysis, recommendation, traffic route, roadside, edge region, slope, vegetation, maintenance measure, influence, effect, flora, fauna, small animal, fauna, living space, nature conservation, investigation method, sample area, test result, cost-benefit-analysis, recommendation,

Self-published 2019, 87 pp., Ill., Tab., Lit.

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Enabling a realistic benchmarking of the structural maintenance of the canton roads (BORMAC)
Richmond, Craig; Adey, Bryan T. (Writer, Project Leader); Achilles, Fabian

A quantitative model of the variability of the expected rate of decay of the surface layer of asphalt pavements due to climatic, human geographic, physical-geographical factors and traffic load is derived in a novel way. This leads to locally specific predictions of the service life of asphalt concrete roads. The different length of the service life has a strong influence on the amount of expenditure for the renewal maintenance. The model can therefore be used for benchmarks that automatically adapt to the different severity of the local characteristics of aggravating factors. The model can only be derived mathematically as an approximation. The resulting equations are available in closed form. The independent variables are the distribution parameters of the respective damaging events. A second model of the renewal costs in connection with non-expiry influencing factors is estimated. These influence the amount of the project costs but not how often a project has to be carried out. Combining the amount of the project costs with the frequency of the projects results in a model of the total expenditure in the form of price times quantity, whereby both values ​​are to be understood depending on the local influencing factors.

Tags:
Asphalt road, asphalt pavement, asphalt top layer, asphalt concrete top layer, damage behavior, durability, service life, service life, influencing variable, traffic load, climate influence, investigation method, modeling, model (mathematical), approximate solution, application, maintenance, renewal, costs, benchmarking, asphaltacing road, asphaltic surf, asphalt wearing course, asphalt concrete coating, damage behavior, durability, duration of life, working live, factor of influence, traffic loading, climatic influence, investigation method, modeling, mathematical model, approximate solution, application, maintenance, renewal, costs, benchmarking,

Self-published 2019, 150 p., Ill., Tab., Lit.

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Risk Based Maintenance (RBM) - Minimizing user risks and operating costs with a risk-based method for maintaining the BSA
Schtalheim, Uri; Ott, Stefan; Heitz, Christoph; Huber, Lilach Goren

Malfunctions and failures of operating and safety equipment (BSA) can lead to an increased accident rate and an increased volume of damage and thus represent a risk for road users. This risk is different for different BSA units and is influenced by the maintenance, inspection and replacement strategies. The risk-based approach to maintenance (RBM: Risk Based Maintenance) optimizes the use of resources in such a way that the overall risk is minimized across the total amount of all units considered. An annual budget, which corresponds to the sum of all funds deployed, is assumed as a boundary condition. The proposed method was theoretically described in the EMS-CH technical concept; relevant data has been collected since then. For a direct implementation in practice there are no methods for the parameterization of the necessary models (based on data and expert knowledge) as well as a precise estimate of the risk and cost reduction. A first goal of this research project is to supplement the methodology with regard to data evaluation, parameter estimation for failure rates, cost and damage models. The existing extensive data should be evaluated and supplemented with specialist knowledge. Estimated failure rates and amounts of damage are relevant interim findings. A second goal is an RBM application and strategy proposals for the most important units. This is to determine a possible risk and cost reduction. A comparison with case studies from other industries suggests that significant safety and cost savings can be expected.

Tags:
Road tunnel, tunnel operation, operating technology, safety technology, technical equipment, technical system, malfunction, failure, risk minimization, servicing, maintenance, upkeep, costs, opportunities for improvement, optimization process, calculation process, strategy planning, strategy concept, application, pilot study, tunnel lighting, ventilation, fire alarm system, emergency power system, Research project, road tunnel, tunnel operation, production engineering, safety engineering, technical equipment, technical facility, disturbance, minimizing risks, upkeep, maintenance, maintenance, costs, improvement possibility, optimization method, calculation method, strategic planning, strategic concept, application, pilot study, tunnel lighting, ventilation, fire alarm system, standby generating set, research project,

Selbstverlag 2019, 122 pp., Ill., Tab., Lit.

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Basics for updating SN 641 826 - costs of operational maintenance of roads
Herrmann, Thomas; Kessler, Christoph; Liedtke, Klaus-Peter

The basis for evaluating the operating and maintenance costs of roads is incomplete and needs to be updated. The revision of SN 640 907 in 2012 revealed discrepancies with current FEDRO cost indicators, some of which can be traced back to the introduction of the NFA in 2008 and which have to be remedied. Three models (national roads, roads out of town and roads in town) are to be developed. The following work is required: - Structuring of the term operating costs and definition of its components by a group of users and experts - Evaluation of the existing FEDRO data on the territorial units and available cantonal civil engineering offices. The cost drivers are newly determined and supplemented for the various cost variables (condition, traffic load, dimensioning, weather-relatedness). Based on data from the FSO, the cost drivers of roads are to be specifically analyzed by selected municipalities. - Individual follow-up surveys / interviews to cover special cases - Statistical evaluations (regression analysis, ANOVA ...) with an additive cost model: - Create a NS model as a basic model and determine surcharges / deductions for the roads outside of town - Operating cost indicators according to road / Plant types - Special operating cost indicators for civil engineering structures, BSA, traffic management and traffic regulation - Cost ranges depending on influencing factors (condition, location, traffic load, etc.) The improved standard takes into account the urgent need for up-to-date, reliable indicators for estimating operating and maintenance .

Tags:
Road operation, road maintenance, entertainment, winter service, cleaning, traffic control, monitoring, costing, cost model, influencing factor, data basis, set of rules, SN, updating, optimization, research project, highway operations, road maintenance, maintenance, winter service, cleaning, traffic control, supervision, determination of cost, cost model, factor of influence, data foundation, set of rules, SN, update, optimization, research project,

Self-published 2018, 82 pp., Ill., Tab., Lit.

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Articles (1491):


Subjective influences in the assessment of the condition of engineering structures
Weller, Cornell

Tags:
Condition assessment, engineering structure, deviation, decision, influencing factor, trial, test result, maintenance, monitoring, condition assessment, damage, damage pattern, building inspection, assessment procedure, research, qualification, test report, fluctuation, evaluation of the state, civil engineering structure, deviation, decision, factor of influence, test, investigation findings, maintenance, supervision, determination of the state, damaging, damage picture, structure test, evaluation method, research, qualification, test report, fluctuation,

KIT Scientific Publishing 2019, pp.374-389, fig., Tab., Lit.
ISBN: 978-3-7315-0906-6
Series: 30th BBB Assistant Meeting 2019 in Karlsruhe. Specialist congress for the scientific staff in the construction industry, construction operations, construction process engineering. 10th - 12th July 2019. Institute for Technology and Management in Construction (TMB), Karlsruhe Institute of Technology (KIT)

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Wind energy developments - where do we stand?
Hahn, Berthold; Keller, Sarina; Becker, Raik; Rettenmeier, Andreas

Tags:
Wind energy, status report, technology assessment, evaluation criterion, market potential, location analysis, development potential, tower head, tower construction, operation, maintenance, noise pollution, acceptance, energy transition, research and development, wind power, status report, technology assessment, evaluation criteria, market potential, site suitability analysis , development potential, tower head, operation, maintenance, noise pollution, acceptance, energy turning point, research and development,

Self-published 2018, pp. 61-66, illus., Lit.
Series: Topics 2017. Research for the energy transition - The design of the energy system. 2017 annual conference of the Renewable Energy Research Association, November 8 and 9, 2017, Berlin Environment Forum; Topics, Research Association for Renewable Energies FVEE

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Performance evaluation for same-floor drain technology in residential buildings
Cheng, C.L .; Chen, C.J .; Liao, W.J.

Tags:
building drainage system, residential building, W062, same-floor drain, performance evaluation, plumbing engineering,

Haarlem (Netherlands) in-house publication 2017, 10 p., Figs., Refs.
Series: Proceedings of the 43rd International Symposium of CIB W062 on Water Supply and Drainage for Buildings
Conference: 43rd International Symposium of CIB W062 Water Supply and Drainage for Buildings,
Text language: English
NLCIB

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A mathematical model for decision-making of a nonpotable water system in residential buildings: decentralized in clusters or individual decentralized?
Dias, C.M .; Oliveira, L.H .; Kurokawa, F.A.

Tags:
decision-making, W062, Non-potable water system, decentralized-in-cluster system, decentralized system, integer programming,

Haarlem (Netherlands) in-house publication 2017, 13 p., Figs., Refs., Tabs.
Series: Proceedings of the 43rd International Symposium of CIB W062 on Water Supply and Drainage for Buildings
Conference: 43rd International Symposium of CIB W062 Water Supply and Drainage for Buildings,
Text language: English
NLCIB

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Integration of gray water recycling with PGWS in residential building
Cheng, C.L .; Yeh, C.H .; Perg, J.J .; Lin, H.P.

Tags:
reuse, W062, green wall, gray water, constructed wetlands, domestic water consumption, on-site circulation, individual gray water streams,

Haarlem (Netherlands) in-house publication 2017, 12 p., Figs., Refs., Tabs.
Series: Proceedings of the 43rd International Symposium of CIB W062 on Water Supply and Drainage for Buildings
Conference: 43rd International Symposium of CIB W062 Water Supply and Drainage for Buildings,
Text language: English
NLCIB

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Magazine Articles (157):


Concept for BIM? -Based maintenance of engineering structures with monitoring systems
Hartung, Robert; Naraniecki, Hubert; Klemt? Albert, Katharina; Marx, Steffen
Magazine article from: Bautechnik
Vol .: 97, no.12, fig., Lit., 2020, pp.826-835, fig., Lit.

Tags:
Building information modeling, maintenance, monitoring, surveillance, engineering structure, digitization, railway bridge, reliability, artificial intelligence, repair, life cycle, building testing, inspection, deadline, service life, concept, forecast model, system architecture, platform, prototype, building model, classification, data acquisition, analysis , Measurement data, validation, damage pattern, BIM, building information modeling, maintenance, supervision, civil engineering structure, digitizing, railway bridge, reliability, artificial intelligence, repair, life cycle, structure test, inspection, term, duration of life, concept, prognosis model, system architecture, platform, prototype, structural model, classification, data recording, analysis, performance data, validation, damage picture,

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Corrosion-related costs on engineering structures in the Swiss road network
Yilmaz, Deniz; Afraid, Ueli
Magazine articles from: Concrete and reinforced concrete construction
Vol .: Vol. 115, No. 6, fig., Tab., Lit., graph. Darst., 2020, pp.448-458, fig., Tab., Lit., graph. Darst.

Tags:
Corrosion, construction costs, repair costs, road network, damage, infrastructure structure, assessment, canton, survey, road network, maintenance, study, bridge structure, overpass, motorway, chloride penetration, pedestrian bridge, polymer bitumen, concrete repair, total costs, civil engineering office, conservation measure, reinforced concrete bridge, aging, innovation, Data collection, corrosion, building costs, repair costs, road network, damaging, evaluation, canton, inquiry, road network, maintenance, study, bridge structure, overpass, motorway, penetration of chloride, footbridge, polymer bitumen, concrete repair, total cost, Civil Engineering Office, preservation measure, reinforced concrete bridge, aging, innovation,

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New position paper. Basic recommendations for the renovation and renewal of heating systems

Journal article from: Gebäude-Energieberater GEB
Vol .: Vol. 15, No. 4, Fig., Tab., 2019, pp. 48-51, Fig., Tab.

Tags:
Heating system, design, heating surface, hydraulics, heat loss, drinking water, servicing, maintenance, combined heat and power unit, heating system, public inspection, heating surface, hydraulics, heat loss, drinking water, upkeep, maintenance, district heating plant, position paper, recommendation, central heating system, plant renovation , Renewal, temperature, control technology, piping, pipe insulation, copper piping, water heating, efficiency, electric heat pump, solar thermal, CHP, wood pellets, wood chips, wood boilers, grid connection, future prospects, CO2 emissions, renewable energy, position paper, recommendation, central heating system, plant rehabilitation, renewal, temperature, control of feedback engineering, pipeline, pipe insulation, copper piping, hot water heating, efficiency, electric heat pump, solar thermics, wood pellet, wood chips, wood furnace, mains connection, future prospect,

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Long-term behavior of a 170 m long integral railway bridge. Measurements and modeling for the interaction of the ground / structure / gapless track using the example of the Rednitztal Bridge
Wenner, Marc; Seidl, Günter; Garn, Robert; Marx, Steffen
Magazine article from: Bautechnik
Jg .: Jg.96, Nr.2, fig., Lit., det., Längschn., Querschn., 2019, p.120-132, fig., Lit., Det., Längschn., Querschn.

Tags:
Long-term behavior, railway bridge, modeling, interaction, monitoring, rail, comparison, dam, bored pile, frame bridge, entertainment, backfilling, abutment, track, parameters, long-term behavior, railway bridge, modeling, interaction, supervision, rail, compromise, barrage, bore pile, frame bridge, maintenance, structural fill, abutment, railway track, parameter, measurement, numerics, drag plate, tension, investigation, deformation, sensor, ballast superstructure, robustness, temperature, structural behavior, superstructure, evidence, shift, calculation, variant, Integralbauweise, measurement, numerics, sliding plate, stress, investigation, deformation, sensor, ballasted track, robustness, temperature, behavior of supporting structures, permanent way, proof, displacement, calculation, version,

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Stress factor day. LED lights also age when they are not switched on
Dressel, Sven
Magazine article from: Licht
Vol .: Jg 70, No. 2, ill., 2018, pp. 108-110, ill.

Tags:
Lifespan, duration of life, LED light, street light, luminous flux, practical example, UV irradiation, maintenance effort, LED technology, LED lamp, street lighting, luminous flux, practical example, UV irradiation, maintenance effort,

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Dissertations (16):


Operating costs of the road transport infrastructure as a function of property and network properties
Osterried, Julia

The thesis deals with the operational maintenance of objects of the transport infrastructure, in particular roads, bridges and tunnels in the course of motorways. The service level to be provided is derived from the scope of services (system inventory) and target service (type and cycle of service provision) with the aim of meeting the requirements of an economic benefit. On the basis of production and cost theory as well as organizational science methods, a model is developed to determine and forecast the operating costs of the transport infrastructure, which takes into account the property properties of the existing system and the specific network properties.

Tags:
Road traffic, traffic infrastructure, federal trunk road, federal freeway, motorway, road network, engineering structure, road bridge, bridge structure, road tunnel, tunnel structure, road maintenance service, maintenance, maintenance, operating costs, life cycle costs, calculation method, calculation model, road traffic, traffic infrastructure, federal trunk road, federal motorway, motorway , road network, highway structure, road bridge, bridge structure, road tunnel, tunnel construction work, highway maintenance service, maintenance, preservation, operating cost, life cycle costs, calculation method, calculation model,

Self-published 2020, 250 p., Ill., Tab., Lit.

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Structural safety management for the maintenance of urban tracks
Fishmaster, Edgar

The stress on the tracks due to the rolling contact of the vehicle wheels causes a large number of damage to the rails. In general, the splints do not fail suddenly, but rather the damage occurs gradually over the course of the load history. Wear, plasticization and material breakdown of the rail never occur alone, a combination of the damage always leads to a reduction in the service life. A correct strategy in the technical monitoring of the tracks with the use of the most modern devices enables an efficient inspection and thus a successful maintenance of safe underground tracks. In the thesis, the inspection intervals and the permissible crack depth under cyclical rolling contact are determined on the basis of the risk-based inspection and fracture mechanics on the basis of crack growth and linear damage accumulation. The work is divided into two main parts: (a) First, in the management part, the basics for a safety management system with risk-based inspection are presented using best practice. The implementation of the safety management system for the maintenance of the track infrastructure at Wiener Linien is explained in sections. By creating and evaluating the risks, the handling of risks and dangers in the maintenance of the track infrastructure at Wiener Linien is to be explained and how measures can be derived in order to be able to minimize possibly high risks. (b) In the second part, which represents the technical part, it is shown that not only wear and tear means loss of material, but that material fatigue can also lead to the failure of system components in the track infrastructure and thus greatly shorten the service life of the rails. With the help of fracture mechanics for long cracks, it is investigated which model can be used to model the crack growth in the rails in order to be able to calculate the service life of the rails. Five models at the crack tip were used to calculate the K value

Tags:
Big city, metropolis, urban area, urban area, railroad track, track, rail, maintenance, safety management, inspection, monitoring, tensile stress, stress (cyclical), wear and tear, damage, risk minimization, crack formation, crack growth, crack depth, modeling, fatigue fracture, fracture mechanics, service life, Calculation, large city, metropolis, Urban space, urban area, railway track, railway track, rail, maintenance, safety management, inspection, supervision, subjection to tension, cyclic, wear, damaging, minimizing risks, cracking, crack propagation, crack depth , modeling, fatigue fracture, fracture mechanics, duration of life, calculation,

Self-published 2012, 247 p., Fig., Tab., Lit.

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Development of a road condition model when using thawing grit in winter service
Benefit, Peter

The winter service as part of the road maintenance service is indispensable for maintaining road safety and ensuring accessibility in wintry weather conditions. This is achieved through mechanical snow removal in combination with the application of grit. However, the widespread use of de-icing agents creates a conflict of objectives between traffic safety and the drivability of the road network on the one hand and the costs of winter maintenance and environmental impacts on the other. As a contribution to solving this conflict of goals, a comprehensive model is developed in the thesis, which enables a holistic view of the winter road service. The evaluation of previous models, which mostly originate from weather forecasts or the data evaluation of winter service operations, shows the shortcomings of existing models due to the lack of mutual linking of the data or the integration of parameters of the road surface. Particular attention is paid to the consideration of all necessary parameters in order to enable a holistic view and to open up a wide range of applications without neglecting practical factors. The main input variables in the model are weather forecasts, deployment data from the gritting vehicles and information on the road surface texture in order to predict the road condition with reference to road grip. The developed model is divided into four modules, which can be viewed separately and each form their own research area. For the road user, the road grip is the most relevant parameter, as this has a direct effect on the braking distance and the possible cornering speed. In addition to the tires, the texture of the road surface is crucial for grip. As the road surface is filled with snow or ice, the grip is reduced. The snow required to lower the grip level

Tags:
Road maintenance service, winter service, road salt application, grit, impact, traffic safety, costs, environmental damage, environmental impact, target conflict, use, application, quantity determination, optimization, effectiveness analysis, road condition, modeling, model development, model calculation, test program, measurement, highway maintenance service, winter service, application of thawing salt, gritting material, effect, traffic safety, costs, harmful effect on the environment, environmental impact, goal conflict, application, quantity determination, optimization, effectiveness analysis, road conditions, modeling, model development, model calculation, test program, measurement,

Selbstverlag 2015, 161 pp., Ill., Tab., Lit.

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Maintenance management of the material infrastructure with special consideration of the socio-economic and microeconomic aspects
Brick, Christian

The work deals with the transport infrastructure using the example of the federal highways from a socio-economic and microeconomic perspective. Based on this consideration, a theoretical and practical approach is developed that enables limited financial resources to be allocated in such a way that they provide the economic actors in an economy with the greatest benefit. The operator, generally the state itself, is provided with criteria for prioritizing its investment decisions.

Tags:
Transport infrastructure, federal autobahn, motorway, maintenance measure, maintenance measure, operator, investment decision, investment costs, costs, profitability, overall economy, assessment, assessment criterion, economic benefit, national accounts, cost-benefit analysis, urgency ranking, priority ranking, decision-making aid, pavement management system, traffic infrastructure, federal motorway, motorway, preservation measure, maintenance measure, operator, investment decision, investment costs, costs, economy, overall economic efficiency, evaluation, criterion of estimation, economic use, gross national economy, cost-benefit-analysis, sequence of priorities, sequence of priorities, decision-making aid,

Self-published 2020, XVIII, 283 pp., Fig., Tab., Lit.

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Concept for sustainability controlling in urban water management
Benz, Philipp

The thesis develops a concept for the description and assessment of the sustainability of municipal water management systems. For this purpose, the concept of sustainability is set as the main goal of urban water management and combined with the requirements resulting from the assignment of this area to services of general interest. With an intradisciplinary approach from i.a. Engineering and social science theories and methods are used to derive the requirement profile of the concept from these framework conditions. Decisions that affect the future of the modern risk society play a key role in this assessment approach. The municipal water management system is delimited accordingly on the basis of the responsibility of the decision-makers involved. A structure of sustainability risks is developed based on the fact that there is no such thing as absolute sustainability, but there are dangers that endanger this goal. The protection against these risks is understood as a service of the urban water management system.

Tags:
Services of general interest, drinking water supply, environmental pollution, environmental protection, norm, evaluation system, existence care, drinking water supply, environmental loading, environmental protection, standard, evaluation system, community, municipal water management, sustainability, ecology, set of rules, legal basis, evaluation procedure, controlling, asset management , Maintenance planning, risk management, application example, drinking water well, vertical filter well, well system, operation, municipality, commune, communal water management, sustainability, ecology, set of rules, legal basis, evaluation method, controlling, asset management, maintenance planning, risk management, example of application, drinking water well, vertical filter well, well system, operation,

Self-published 2014, XX, 201 pp., Fig., Tab., Lit.
ISBN: 978-3-940897-27-5

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Research projects (24):

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Heating. A method of pavement maintenance. ("Heating", a method of road maintenance)

This report compares the energy consumption of coating the roads with asphalt using the conventional method and the "heating method". The total energy consumption was ...

International coordination of civil engineering. Participation in the preparation of European building regulations

After the first two volumes of the comprehensive international model regulations (model code) issued by the CEB and the FIP in 1978, namely Volume I (building material comprehensive safety ...

Informatics for design, production, maintenance and occupancy of construction works - a search for simplicity. (Information systems for the design, manufacture, maintenance and possession of buildings - in search of simplification)

The present report represents one of the 14 series of a project entitled "Information system for organizational procedures". It was developed at the Department of Design Methodology of the Kings ...

High performance buildings

The time has come to standardize assessments of building performance in terms of sustainability. A large European consortium has paved the way by developing a set of indicators and a benchmarking proc ...

Smart ways to keep buildings in good order

EU researchers have developed a wireless network of sensors to monitor the structural integrity of buildings. Use of this system can improve the safety of buildings and reduce maintenance costs. As so ...

New tools for old building restorers

The building industry thrives on careful planning and the latest software tools for streamlining its workflow. This is even true of complex renovation and old building maintenance jobs. But smaller c ...

Planning better road maintenance reduces delays

A properly maintained road system is crucial to the EU's economic success. A European project was set up to improve the efficiency and safety of the European network by collating data that enable ...

maintenance and preservation of concrete structures. Rep. 3. Abrasion-erosion resistance of concrete. (Monitoring and maintenance of concrete structures. Rep. 3. Abrasion and erosion resistance of concrete)

The report describes a laboratory test program to investigate the abrasion and erosion resistance of various types of concrete that can be used to restore structures damaged by erosion.

maintenance and preservation of concrete structures. Rep. 2. Repair of erosion-damaged structures. (Monitoring and maintenance of concrete structures. Rep. 2. Restoration of buildings damaged by erosion)

In numerous dams and dams, the monitoring and maintenance of which is the responsibility of the US Army Engineer Waterways Experiment Station (WES), erosion damage has been observed. The previous ...

maintenance and operating costs of modern boilers. (Maintenance and operating costs of modern boiler systems)

In the years 1973 - 1974 a study was carried out on the maintenance and operating costs of a representative number of boiler systems which are used to heat offices and ...

maintenance and repair of multi-storey car parks. (Maintenance and restoration of multi-storey car parks)

The report of the British Parking Association contains explanations on the following subjects: 1. Damage to parking houses that were made as multi-storey reinforced concrete structures; 2. Park area ...

maintenance costs of flat roofs. (Maintenance costs of flat roofs)

Part 1: 360 heavy asphalt roofs are compared with 245 conventional steep tile roofs on otherwise identical two-story, semi-detached houses. All repairs aged 13 to ...

Bridge maintenance. (Bridge maintenance)

Two topics were dealt with: the definition of the scope of maintenance and the type of construction and, as a result, the characteristics of the bridges. The entertainment includes all measures to keep the ...

Pavement thickness, surface evenness and construction practice. (Thickness of the pavement, evenness of the surface and practical construction)

The behavior of the paving and the driving characteristics of a road are strongly influenced by the accuracy and uniformity of the paving of the intended layer thickness. The report gives a ...

Analysis of fresh concrete: repeatability and reproducibility by the rapid analysis machine. (Fresh concrete test: repeat and comparison scatter with the rapid test device)

This report describes the investigation that was carried out on a motorway construction site in order to determine the repeat and comparative scatter when testing the cement content of fresh concrete with the ...

Measurement of rut depths in road surfaces by the TRRL high-speed profilometer. (Measurement of the rut depth of road surfaces with the TRRL rapid profilometer)

At the moment, the pressure on road surfaces in the wheel tracks of roads in England is measured with a straightedge. This procedure is slow and dangerous when taking measurements under traffic. ...

The conduct of road maintenance in Ghana. (Carrying out street maintenance in Ghana)

An investigation into street maintenance in Ghana has been carried out. This report reproduces the part of the investigation that deals with the determination of the actually completed ...

An improved data collection method for the CHART highway maintenance system.

A new method has been developed using a hand-held microcomputer to process the information data during route control according to the CHART road entertainment system ...

Analysis of fresh concrete: repeatability and reproducibility by the pressure filter method. (Fresh concrete test: repeat and comparative scatter with the pressure filter method)

The report describes the investigations that were carried out on a road construction site in order to ensure the precision of the test procedure (test error), i.e. the repeat and comparative variance in ...

Evaluation of a fully automatic asphalt mixing plant. (Evaluation of a fully automatic asphalt mixing plant)

The asphalt mixing plant built on a test scale by the TRRL under the name "continuous dryer" was examined with a test system. The aim of the investigation was to ...

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