Landslide problems in Winnipeg

1981 ◽  
Vol 18 (3) ◽  
pp. 390-401 ◽  
Author(s):  
A. Baracos ◽  
J. Graham
Keyword(s):  
Soil Properties ◽  
Public Utility ◽  
River Flooding ◽  
Stability Analyses ◽  
Design Practices ◽  
Current Design ◽  
Plastic Clays ◽  
The City

Winnipeg is built on lacustrine, swelling, plastic clays, and is intersected by two major rivers, and other smaller rivers. The riverbanks are used for commercial, residential, and public utility purposes, and many are unstable. This paper reviews the conditions of topography, river flooding, and soil properties which have produced sliding in the riverbanks. The framework of legislation which governs riverbank development is reviewed, and procedures for stability analyses are outlined. The paper concludes by discussing current design practices, and their application to stabilising measures for common practical problems in the city.

A Survey of Damages to Bridges in Pakistan after the Major Earthquake of 8 October 2005

2011 ◽  
Vol 27 (4) ◽  
pp. 947-970 ◽  
Author(s):  
Syed M. Ali ◽  
Akhtar N. Khan ◽  
Shahzad Rahman ◽  
Andrei M. Reinhorn
Keyword(s):  
Seismic Risk ◽  
Road Network ◽  
Bridge Design ◽  
Major Earthquake ◽  
Design Practices ◽  
Current Design ◽  
Existing Bridges ◽  
The City ◽  
Extensive Damage

An earthquake measuring Mw 7.6 struck the Pakistan-administered part of Kashmir on 8 October 2005. The epicenter of the earthquake was located 22 km from the city of Muzaffarabad. The earthquake resulted in the loss of more than 80,000 lives and caused extensive damage to property and infrastructure. A survey of an approximately 400-km road network was carried out, in which 90 bridges were inspected for earthquake-associated damage, out of which 14 bridges (16%) experienced damage of varying degrees, of which nine bridges (10%) either failed or became nonfunctional. The survey revealed some of the deficiencies of the construction practices in Pakistan and also highlighted the need for improvement to the country's current bridge design practices. This paper reports the prominent types of failures observed and discusses the deficiencies in current design practices. Based on the findings of the survey, various recommendations are made, with the objective of minimizing earthquake-associated damages to new and existing bridges in areas with a high seismic risk.

scholarly journals The New Control of Territory and Urban Planning: the Eminent Domain in the US

2018 ◽  
Vol 6 (4) ◽  
pp. 38
Author(s):  
Sonia Paone
Keyword(s):  
Private Property ◽  
Cost Benefit Analysis ◽  
Cost Benefit ◽  
The United States ◽  
Eminent Domain ◽  
Public Utility ◽  
Transfer Property ◽  
The Us ◽  
Us Supreme Court ◽  
The City

The article analyses the transformations of the use of eminent domain in the United States in the context of urban redevelopment programs. In the past the private property has been expropriated for public use only. Recently it is possible to forcibly transfer property, from a private subject to private developers, on the basis of a cost-benefit analysis that demonstrates that the new use is more efficient than the previous one. This profound change has been possible thanks to a progressive modification of the concept of public use. Traditionally, public use coincided with the construction of infrastructures and public utility, such as highways and railroads. Over the time, it has come to include other aims: firstly, projects of urban renewal and economic development carried forth by private developers. Essentially, it has resulted in the use of expropriation to assemble lands which are then granted to subjects who intervene in the reconfiguration of the city for private purposes. Starting from some important examples of urban development, the main phases of this process are reconstructed, also taking into account the most important decisions of the US Supreme Court that contributed to the change of doctrine, invalidating the postulate of public use as justification for expropriation.

scholarly journals ASSESSMENT OF THE SEISMIC RESISTANCE DEFICIT OF BRICK MASONRY CHIMNEY ACCORDING TO RELEVANT DESIGN CODES

2020 ◽  
pp. 13-25
Author(s):  
Z. K. Abaev ◽  
M. Yu. Kodzaev ◽  
A. D. Valiev
Keyword(s):  
Brick Masonry ◽  
Building Codes ◽  
Earthquake Resistance ◽  
Seismic Resistance ◽  
Design Codes ◽  
Sustainable Operation ◽  
Current Design ◽  
The City

Most of the brick masonry chimneys located in earthquake-prone areas were built long before the current design codes were adopted, which poses a great threat to the sustainable operation and development of the city industry as a whole. This article presents a consistent example of assessing the deficit of earthquake resistance of a brick masonry chimney and gives general conclusions about changes in main coefficients of designed codes. This study aims to quantify the deficit of earthquake resistance of brick masonry chimney according to the relevant Building Codes “SP 14.13330.2018 Construction in seismic areas”.

scholarly journals Re-engaging the spirit: engaging traditional Anishinabek healing beliefs into an architecture for addiction wellbeing centres

2021 ◽  
Author(s):  
Madison Dozzi-Perry
Keyword(s):  
Addiction Treatment ◽  
The Body ◽  
Spiritual Awareness ◽  
Cold Environments ◽  
Design Practices ◽  
The World ◽  
Current Design ◽  
Treatment Facilities ◽  
The Mind ◽  
Western Perspective

Current design practices for addiction treatment facilities reflect that of the western perspective on health, providing sterile, monolithic and cold environments. The quest for cleanliness, static and conditioned spaces robs the user of the richness of an engaging experience, isolating them into a sealed box. We further numb and anesthetize patients, disembodying them from the world and hindering their abilities to achieve physical, mental, emotional and spiritual awareness. This disengagement of the natural, human and spiritual realms proliferates the problems facing people with addiction. This thesis proposes an engagement of Anishinabek healing and wellbeing principles to inform the design of addiction healing spaces that stimulate the users, re-engages and enhances one’s awareness and understanding of one’s self, other beings and place in the world. By incorporating these principles into design, architecture can begin to re-engage the mind, the body, the heart and the soul of people suffering from addiction wellbeing issues.

scholarly journals COMMUNITY BASED APPROACH FOR SOLID WASTE MANAGEMENT IN KHULNA CITY

2020 ◽  
Author(s):  
Rakibul Ahasan
Keyword(s):  
Waste Management ◽  
Solid Waste ◽  
Urban Areas ◽  
Management System ◽  
Solid Waste Management ◽  
Public Utility ◽  
Management Approach ◽  
Community Based ◽  
Waste Management System ◽  
The City

Generation of solid waste (SW) is a major problem in urban areas, thus its management is one of the important obligatory functions to not only urban local authority but also for the inhabitants. The citizens expressed their concerns about the waste management system in KCC and associated problems that they are encountering. Waste generation in Khulna City Corporation is around 455 tons of municipal solid waste/day and generation rate is now 0.75 Kg/capita/day on an average. Existing public utility services and facilities are not adequate to meet the demand of disposing these massive amounts of wastes and that’s why several problems are arising. There are some deterrents in the KCC’s solid waste Management system, arising from both the city corporation authority and the citizen of different levels. With a view to address the problem from through community participation, this paper intends to evaluate the potential of community based solid waste management approach in context of Khulna city.

scholarly journals Outbreak of cryptosporidium hominis following river flooding in the city of Halle (Saale), Germany, August 2013

2015 ◽  
Vol 15 (1) ◽  
Author(s):  
Maximilian Gertler ◽  
Matthias Dürr ◽  
Peter Renner ◽  
Sven Poppert ◽  
Mona Askar ◽  
...  
Keyword(s):  
Cryptosporidium Hominis ◽  
River Flooding ◽  
The City

The great Mexican earthquake of 19 June 1858: Expected ground motions and damage in Mexico City from a similar future event

1996 ◽  
Vol 86 (6) ◽  
pp. 1655-1666 ◽  
Author(s):  
S. K. Singh ◽  
M. Ordaz ◽  
L. E. Pérez-Rocha
Keyword(s):  
Mexico City ◽  
Transfer Functions ◽  
Ground Motions ◽  
Careful Examination ◽  
Great Earthquake ◽  
Normal Faulting ◽  
Cocos Plate ◽  
Current Design ◽  
Peak Horizontal Acceleration ◽  
The City

Abstract The description of the great earthquake of 19 June 1858 is unusual: damage and high intensities were reported both in the state of Michoacan and in Mexico City. Although a coastal epicenter for this earthquake cannot be ruled out, the reports agree better with an intermediate-depth (about 50 km), normal-faulting event in the subducted Cocos plate. A careful examination of the reports of this event and other normal-faulting events below the Mexican altiplano suggests that a likely location is 18.0 °N, 100.8 °W, near the epicenter of the 6 June 1964 (M7.3, H = 55 km) event. This location is 220 km SW of the city. The magnitude of the earthquake is estimated to be about 7.7. We synthesize expected ground motions in CU, a hill-zone site in the city, from an event similar to that of 1858, using records from the 23 May 1994 earthquake (18.0 °N, 100.6 °W, H = 50 km, M5.7) as an empirical Green's function and stress parameter, Δσ, of 50, 160, and 300 bar. The expected peak horizontal acceleration in CU of Δσ = 160 bar is about 30 gals. Similar acceleration was recorded in CU during the 1985, Michoacan earthquake (M8.0). We compute expected ground motions at many sites in Mexico City using empirical transfer functions and random vibration theory and compare these motions and the expected damage in the city with those from the 1985 Michoacan earthquake. Results show that the overall expected damage during the postulated earthquake is ⅔ and 1⅓ of that during the Michoacan earthquake for Δσ = 160 and 300 bar, respectively. A greater percentage of low-rise construction, which constitute about 80% of the total in the city, will be damaged during the postulated earthquake than during the Michoacan earthquake. The expected ground motions for Δσ = 50 bar are smaller at all periods than those from the Michoacan earthquake. As the present building code for Mexico City contemplates coastal earthquakes of magnitude greater than 8.0, the case of Δσ = 50 bar is not of interest in this article. This preliminary study suggests a need for a more careful evaluation of expected ground motion in the Valley of Mexico from the postulated earthquake and its impact on the current design spectra of the city.

Significance of unsaturated soil properties on stability analyses against extreme rainfall conditions

2021 ◽  
pp. 193-203
Author(s):  
Brena Li En Tan ◽  
Alfrendo Satyanaga ◽  
Mărgărit-Mircea Nistor ◽  
Martin Wijaya ◽  
Harianto Rahardjo
Keyword(s):  
Soil Properties ◽  
Unsaturated Soil ◽  
Extreme Rainfall ◽  
Stability Analyses

scholarly journals Key Factors Influencing the Incidence of West Nile Virus in Burleigh County, North Dakota

2018 ◽  
Vol 15 (9) ◽  
pp. 1928 ◽  
Author(s):  
Hiroko Mori ◽  
Joshua Wu ◽  
Motomu Ibaraki ◽  
Franklin Schwartz
Keyword(s):  
West Nile Virus ◽  
North Dakota ◽  
Transmission Rate ◽  
Virus Transmission ◽  
Correlation Coefficients ◽  
West Nile ◽  
Mosquito Abundance ◽  
River Flooding ◽  
Disease Case ◽  
The City

The city of Bismarck, North Dakota has one of the highest numbers of West Nile Virus (WNV) cases per population in the U.S. Although the city conducts extensive mosquito surveillance, the mosquito abundance alone may not fully explain the occurrence of WNV. Here, we developed models to predict mosquito abundance and the number of WNV cases, independently, by statistically analyzing the most important climate and virus transmission factors. An analysis with the mosquito model indicated that the mosquito numbers increase during a warm and humid summer or after a severely cold winter. In addition, river flooding decreased the mosquito numbers. The number of WNV cases was best predicted by including the virus transmission rate, the mosquito numbers, and the mosquito feeding pattern. This virus transmission rate is a function of temperature and increases significantly above 20 °C. The correlation coefficients (r) were 0.910 with the mosquito-population model and 0.620 with the disease case model. Our findings confirmed the conclusions of other work on the importance of climatic variables in controlling the mosquito numbers and contributed new insights into disease dynamics, especially in relation to extreme flooding. It also suggested a new prevention strategy of initiating insecticides not only based on mosquito numbers but also 10-day forecasts of unusually hot weather.

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