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Online since: September 2013
Authors: Kai Chao Jin, Lan Ying Zhao, Li Juan Chen
(1) the lack of waterproof professional construction team.
In addition to decline, construction of vibrating inconvenience, but also because of too much water content, volume shrinkage concrete in freezing water in the process of evaporation of water at the same time, the internal excess, small gap is formed in the concrete.
Well, the water pipes lightning with embedded.
Concrete mixing, strictly control the water-cement ratio and cement content, slump control in 50mm ~ 70mm.
The construction units in the waterproof project construction should be adopted before the joint review of the drawings, master detail structure construction drawing and relevant technical requirements, and shall prepare waterproof engineering construction scheme and technical measures, roof waterproof construction by professional waterproof team or waterproof engineering.
Online since: May 2011
Authors: Ke Chen, Jian Yong Song
Typical Distresses of Skewback, Abutments and Foundation 1) Asymmetry deformation of arch ribs or sedimentation of foundation leads to cracks and crushing on skewback and foundation. 2) The concrete of foundation cracks, seep water and expose steel bars, because of wash out and erode or poor construction quality. 3) Sidewalls and conical slope swell, crack and sink after absorbing water, for the reason of drain destroy, compacting shortage or poor masonry quality.
(a) Cracks and spalling of concrete on ribs (b) Water seeping on ribs (c) Concrete spalling between ribs and crossbeam (d) Pillars on the arch installed error Fig.3.
Moreover, due to shortage of professionals and funds, maintenance mostly aims at members on the top of deck, such as deck pavement, water pipes and rails, and members under deck are ignored sometimes.
Online since: September 2013
Authors: Guo Quan Zhang
Architectural decoration construction technology management optimization Optimization of architectural decoration construction technology management is of great significance to: use of enterprise quality management system, scientific and orderly technical management work; Ensure construction technology level of advanced nature; To strengthen professional and technical training, constantly improve the quality of technical management and the technical ability, is advantageous to the optimization of construction scheme and construction resources reasonable configuration; For technical reform and technical survey in combination with the engineering practice, summing up experience unceasingly, the creation of new construction methods; Create more architectural decoration engineering products; Promote the architectural decoration industry in our country to the next level Management system and system optimization System optimization mainly includes: according to the demand of the management
system of the technical specification of the corresponding positions, and will be the responsibility of Ming refinement; According to the construction stage is reasonable allocate personnel and the division of labor; Based on the need to enhance the quality management level, regularly carry out basic and professional training, based on the need to strengthen the safety education of construction personnel safety training work; Based on the reserve talented person's need to the introduction of excellent technology management talents, to ensure that the technical management in the development of sustainable and advanced.
Decorative building material is the grade first condition to guarantee the engineering quality and construction decoration, and the structure of safety guarantee and environmental protection and beautiful and luxurious.Technical requirements for materials include: requirements of stone material high strength, high hardness, color difference is small, water resistance, contamination resistance, bibulous rate is extremely low, wear-resisting, has a good thermal stability; Ceramic sanitary ware mainly requirement is bibulous rate; Technical requirements including the moisture content of wood, wood wood wet bilge drying shrinkage and deformation, the strength of the wood; The appearance of the wood quality, processing precision, physical and mechanical properties, formaldehyde emission and artificial wood floor; Architectural glass requirements including have good perspective, pervious to light performance, sound insulation, thermal insulation, corrosion resistance, resistance to erosion, has
Good review construction unit of construction work instructions and various professional construction plan, from the source, from system specification sample on the way of operation; (4) To do a good job of supervision and management of the decoration engineering materials; (5) Check the inputs given by construction unit personnel, machinery, etc., can meet the construction schedule and quality requirements; (6) Clear target decoration engineering quality management, strict quality objectives according to the contract requirements, from the quality control of each working procedure, organization set up quality control team to organize the various aspects of project quality management work.
Online since: December 2012
Authors: Kun Yang Wan
For example, Falkemark used water resource stress indicator (to measure regional water resource scarcity with per capita water resource quantity) [1]; Appelgren used social water resource scarcity indicator[2]; X.
Guan adopted set pair analysis method to evaluate the security of water resource in Nanjing City from 4 aspects of water resource condition, water resource development, water-related social economy, water environment and ecology[10]; Y.Y.
Gao used analytic hierarchy process and constructed evaluation index system[11] from 4 aspects of water resource condition, social security of water resource, economic security of water resource and ecological security of water resource; N.N.
However, security of urban water resource is a complicated system; existing evaluation indexes cannot totally reflect multi-objective and multilayered feature of water resource security, such as urban water resource security and water quantity, population, economy, ecology, sustainable development of water resource.
With Hangzhou as an example, index standards in this thesis refer to “Hangzhou Professional Planning of Urban Water Saving” compiled by Hangzhou Public Utility Monitoring Center and Hangzhou Urban Planning and Design Institute in 2006.
Online since: September 2013
Authors: Ze Hong Li, Yu Li, Suo Cheng Dong, Hao Cheng
According to analysis on “three characteristics”, main modes of new rural development of it are industrial enterprise leading mode, urban construction leading mode, modern agriculture leading mode, ecological animal husbandry leading mode, leisure tourism leading mode and professional market leading mode.
It has abundant water resource for Wuding River traverses it.
Professional market leading mode Rural commerce service industry and market are developed, rural market center is established to promote industry and lead countryside economy. ①perfect infrastructure; ② better location condition; ③support of relative industry.
Professional market leading mode Wuding River community: is located in Wuding River Town and involves three villages.
Rely on logistics park under construction and traffic condition to establish professional market.
Online since: December 2014
Authors: Chen An, Ji Hua Wang, Zhou Yi
It is easy to shrinkage and cracking when it dehydrates, and bulk and disintegrating when it contact with water.
The particulate matters of the silty mudstone are tiny, the cementation is weak, its water permeability is poor, and its water content is more, so its engineering properties are relatively soft and weak, it is soft rock.
There are some clay minerals in silty mudstone and clay minerals are easy to expansion with water.
Journal of Central South University(Science and Technology), 2007,2:30-34(in Chinese) [5] Professional Standards Compilation Group of People's Republic of China.
Beijing:Construct Press, 2001(in Chinese) [6] Professional Standards Compilation Group of People's Republic of China.Standard for tests method of engineering rock massas(GB/T50266-99)[s].
Online since: March 2015
All papers had undergone the careful peer-review by expert referees to the professional and scientific standards before it is selected for publications in these volumes.
Studies presented in this book cover these topics: Development and Utilization of Solar Energy, Biomass Energy, Wind Energy and other New Energies; Energy Materials, Energy Chemical Engineering, Fuel Cells; Green Building Materials, Ecological Buildings, Energy-saving Buildings and Architectural Environment Analysis; Power System and Automation, High Voltage and Insulation Technology; Power System Management; Engineering Thermal Physics and Applied Thermal Engineering; Environmental Chemistry and Biology, Animal and Plant Protection, Animal and Plant Resources Utilization; Environmental Safety and Health, Disaster Prevention and Mitigation; Environmental Planning, Assessment, Analysis, Monitoring and Protection; Pollution Control Project (Air, Water, Solid); Waste Disposal and Recycling; Ecological Environmental Protection; Hydrology, Water Resources Engineering; Soil and Water Conservation and Desertification Control; Geographic Information Science and Remote Sensing
Online since: March 2004
Authors: Chung Hyo Lee, Hong Dae Shin, Hyun Ku Joo, Jae Hyun Park
In addition, relatively poor initial design even worsened its performance so that some environmental professionals concluded that photocatalytic system had inherent disadvantages [1].
As a pretreatment step, dipping POF in acetone, followed by washing off remained residue with distilled water was conducted.
TiO2 suspension (5 wt%, pH 4.5) in purified water (Milli-Q, 18M � ) was prepared and dispersed sonically.
Light sources used were 1000 W xenon lamp and 600 W solar simulator (from Oriel, USA), which was filtered through a 10-cm IR water filter and a cut - on filters (WG320 S or LG-450-S) as well as commercialized UV-A lamps (Sankyo denki, Japan).
Baratron gauge for pressure reading Dust filterManual type Butterfly valve Manual type Angel valve Rotary Pump Water trap MFCMFC TIP Ar O2 MFCMFC MFCMFC MFCMFC Metal disk Heater Fig. 1.
Online since: February 2013
Authors: Yin Tsuo Huang
This essay mainly discusses the cognition and attitude of community residents towards renewable energy in Taiwan, analyzes people’s different cognition and attitude, elaborates the correlation between cognition and attitude towards renewable energy and in the end offer some suggestions to the related professionals and researchers.
Besides, continuing to develop technology research, it also consists of many rewarding measures to encourage the civil application of renewable energy, like wind power generation, bio-power (such as industrial waste and city waste), solar electricity, usual hydropower, solar water heating system, geothermal power generation and fuel cell.
Online since: September 2013
Authors: Wei Han, Ping Cao, Wan Sun, Jun Ling Wang, Cui Min Feng
Introduction With continuous development of urban water supply industry, the need to implement performance evaluation is urgently for government, industry or water supply enterprise.
Establish class hierarchy For urban water supply Performance evaluation system, the total target is to assess comprehensive performance of urban water supply.
In order to implement the evaluation purpose, it need to consider water pressure, water quality, meter reading, complaints, energy, network , etc.
Table 4 Table of weight coefficients Target Second Target Weight Factors Weighting Index Weight urban water supply performance evaluation system Service class 0.2041 Customer service 0.0406 Telephone connection 0.0406 Complaint handling 0.0357 Complaint handling rates timely 0.0357 Satisfaction survey 0.0319 User satisfaction 0.0319 Leakage processing 0.0564 Pipeline repair leakage rates timely 0.0564 Meter reading 0.0395 Household water use ratio by meter reading 0.0395 Run class 0.2413 Water quality 0.0856 Qualification rate of New GB 106 water quality 0.0312 Qualification rate of 9 effluent water quality 0.0284 Qualification rate of 7 pipe network water quality 0.0260 Water pressure 0.0666 Pipe network pressure qualification rate 0.0666 Energy consumption 0.0891 Water supply integrated unit power consumption 0.0891 Resource class 0.1226 Resource utilization 0.1226 Water resources utilization 0.0227 Physical leak rate 0.0897 Surface water useself ratio
0.0102 Asset class 0.1067 Structures 0.0335 Water supply capacity utilization 0.0233 Water distribution system storage capacity ratio 0.0102 Water supply network 0.0732 Large and medium caliber pipeline renovation rate 0.0732 Business class 0.2332 Cost 0.1337 Production and marketing rate 0.0667 Main business profit margins 0.067 Profits 0.0395 Production and marketing water cost loss rate 0.0395 Liabilities 0.0195 Current water recovery 0.0195 Bill processing 0.0405 Asset-liability ratio 0.0405 Personnel class 0.0921 Human efficiency 0.0442 Average sale water 0.0442 Talent structure 0.0255 Run post holder ratio 0.0255 Personnel training 0.0224 Intermediate level or higher professional technical personnel ratio 0.0224 Results of table 4 showed that, in the sub-target layer, the weights of service class, operation class and business class are high.
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