HYDROCHEMICAL AND14C CONSTRAINTS ON GROUNDWATER RECHARGE AND INTERBASIN FLOW IN A DESERT WATERSHED - A CASE STUDY FROM SOUTH-EASTERN NEVADA

2016 ◽  
Author(s):  
Benjamin K. Hagedorn ◽  
Keyword(s):  
Groundwater Recharge ◽  
South Eastern ◽  
Interbasin Flow

Strengthening of box girder bridges with external prestressing - case study for the Langeland Bridge.

2021 ◽  
Author(s):  
Ulrik Sloth Andersen
Keyword(s):  
Additional Analysis ◽  
Box Girders ◽  
Box Girder Bridges ◽  
Box Girder ◽  
Basic Principles ◽  
Structural Assessment ◽  
South Eastern ◽  
Girder Bridges ◽  
External Prestressing

<p>This paper presents the basic principles for strengthening of bridges and other structures through the use of external prestressing. A case study that includes strengthening of the approach spans for the Langeland Bridge in the south-eastern part of Denmark is included.</p><p>During a recent rehabilitation, corrosion of the post-tensioned tendons was discovered inside the box girders of the bridge. Additional analysis of the extent of the corrosion and a structural assessment was undertaken. Based on this, a strengthening project was carried out, and strengthening with external prestressing is currently being implemented.</p>

scholarly journals Groundwater Recharges Technology for Water Resource Management: A Case Study

2020 ◽  
Author(s):  
Jatoth Veeranna ◽  
Pawan Jeet
Keyword(s):  
Land Use ◽  
Groundwater Recharge ◽  
Water Availability ◽  
Water Resource Management ◽  
Land Use Land Cover ◽  
Indirect Methods ◽  
Groundwater Availability ◽  
Severe Water Deficit ◽  
Direct And Indirect Methods

The irregularity in monsoon has severely affected the water availability at surface and sub-surface systems. Diminishing surface and sub-surface availability has not only decreased the water availability, but it additionally affected the ecosystem and increased disastrous situations like floods and droughts, resulting problems of stress on groundwater recharge. Groundwater recharge is a technique by which infiltrated water passes through the unsaturated region of groundwater and joins the water table. It is based upon soil type, land use land cover, geomorphology, geophysical and climate (viz. rainfall, temperature, humidity etc.) characteristics of a region. Over the years, due to variations in weather pattern and overexploitation of aquifers groundwater recharge has decreased and groundwater level has reduced in the most parts of the country. This has led to severe water deficit problems in several parts of the country. This can be solved by different direct and indirect methods of groundwater recharge technology. This technology can reduce the wastage of water and enhance groundwater availability for uses in different sector like irrigation, domestic and industrial uses.

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