Week 13 Dust pollution in construction period

(Source: Google image, 2016)

The construction dust is an important factor affecting the air quality of the city environment. There are three main sources of construction dust. Firstly, building demolition and construction waste transport process will produce dust. Secondly, the construction of foundation engineering, earthwork engineering, structural engineering and other processes will produce dust. Thirdly, Building materials, such as cement, lime, sand and so on, will produce dust in the process of loading and unloading, stacking.

According to the different nature of dust, it can cause varying degrees of damage to the human body health. For example it may cause cardiovascular disease, cerebrovascular disease, acute respiratory infections, chronic obstructive pulmonary disease and other diseases. Construction dust damage the human respiratory system significantly. Although a small amount of inhalation can be discharged through the discharge of sputum and normal breathing, if long-term absorption it will lead to the occurrence of lung tissue lesions. For example, pneumoconiosis is due to a large number of dusts absorbed by the lungs and cause serious damage to health.

The ways to prevent and control the dust pollution are list below: Firstly, construction site entrances and exits should set the vehicle washing machine and washing facilities. Vehicles should be washed before leave. It is strictly prohibited to vehicles with mud on the road. Secondly, stacked clay, sand, stone and other granular materials in designated place, and take cover or other measures to prevent the generation of dust. Materials such as cement and other materials that are easy to produce dust should be stored in the warehouse or in a closed container. Construction unit must be equipped with dust control device. Thirdly, the demolition works construction, earthwork construction, construction waste and earthwork and other transportation vehicles should be prohibited in strong winds weather.

Reference List:

Wenku.baidu.com. (2011). Construction dust pollution and prevention measures. [online] Available at: http://wenku.baidu.com/view/69efae1555270722192ef7e8.html?from=search [Accessed 6 Jun. 2016].

Lee, K., Kim, H., Park, J., Chu, K. and Ko, K. (2010). The Comparison and Analysis of Dust, Soil and Water Pollution Through the Case Study of Demolition Sites. Korean Journal of Construction Engineering and Management, 11(4), pp.100-108.

Week 13 Noise pollution in construction period

(Source: Google image, 2016)

The main pollution of construction period contains noise pollution, dust pollution, mud suspended solids pollution, light pollution and solid waste pollution etc.. Noise is one of the most common problems in building construction. The main hazards of noise pollution in the construction site are list below: Firstly, occupational deafness: a progressive hearing loss, until the two ears roar and auditory failure. Secondly, explosive deafness: refers to a high intensity noise (often more than 130-160dB) caused by hearing damage, the performance of the ear drum damage, and mix with a concussion, etc. Thirdly, noise pollution in addition to the impact of the above may also cause neurological disorders, gastrointestinal disorders etc. Noise can cause hearing loss and this loss is gradual. Noise in addition to the impact of hearing loss and also may cause high blood pressure, heart disease, etc. Moreover, noise will distract people's attention, so it is often cause accidents.

There are three ways to control noise: Firstly, eliminate and reduce the production of noise sources: Using the silent tools instead of sound tools, such as hydraulic machine instead of forging machine, hydraulic riveting machine instead of the machine rivet, welding instead of riveting etc. Secondly, control the spread of noise: Rational distribution and separate the high noise places and other space. Installing muffler on noisy mechanical devices. Thirdly, strengthen personal protection: Strengthen publicity education, so that workers know the harm of noise, and consciously make personal protection.

Reference List:

G. (2015). STUDY ON NOISE POLLUTION AT CONSTRUCTION SITE. International Journal of Research in Engineering and Technology, 04(02), pp.420-421.

Wenku.baidu.com. (2011). Construction and installation of noise source analysis and treatment. [online] Available at: http://wenku.baidu.com/view/617bcf13a216147917112843.html?from=search [Accessed 1 Jun. 2016].

Week 12 Case analysis of Academic building in XiangTan University

Academic building of XiangTan University (Source: Google image, 2016)

Academic building of XiangTan university constructed from February 1, 2003 and officially completed and delivered to use on September 1, 2004. It is located in the north side of campus and is the main teaching building of university. Because it is mainly used for teaching, the internal structure is mostly designed in large space and step form. As there have the large flow of students, walkways are designed spacious and have several stairs. The lobby makes full use of natural lighting that saves energy effectively. Using tiling on the building exterior wall enhance the architectural aesthetics. However, analyzing from the perspective of sustainable architecture, tiling plays a certain role in summer is very helpful for isolating temperature. While in winter, this aspect is a less favorable aspect. In summer, the weather in Xiangtan is mainly dominated by high temperature. The reflection of the wall and the isolation of the wall itself make the indoor temperature not increased obviously that have a great help for the indoor temperature and the normal school students. In winter, due to the sun is not sufficient and the rainy weather, the indoor temperature is generally low. The indoor air conditioning system can provide heating in winter but will increase the energy consumption significantly. Therefore, it is recommended to grow plants that can grow up and cover the sunny wall in summer to shading and cooling and also increase green area; In winter, it is recommended to increase the reflector and make full use of natural light to reduce electricity use for air conditioning and save energy.

Reference List:

Wenku.baidu.com. (2014). Analysis of academic building from the perspective of sustainability. [online] Available at: http://wenku.baidu.com/view/3745a9590b4e767f5acfce5d.html?from=search [Accessed 28 May 2016].