Thursday, 19 May 2022

FOUNDATIONS FOR INDUSTRIAL MACHINES AND EARTHQUAKE EFFECTS

 FOUNDATIONS FOR INDUSTRIAL MACHINES AND EARTHQUAKE EFFECTS 

ABSTRACT 

Improvement in manufacturing technology has provided machines of higher ratings with better tolerances and controlled behavior. These machines give rise to considerably higher dynamic forces and thereby higher stresses and, in return, demand improved performance and safety leaving no room for failures. This paper highlights the need for better interaction between foundation designers and machine manufacturers to ensure improved machine performance. The paper also describes the design aids/methodologies for foundation design. Various issues related to mathematical modeling and interpretations of results are discussed at length. Intricacies of designing vibration isolation systems for heavy-duty machines are also discussed. Influences of dynamic characteristics of foundation elements, viz., beams, columns, pedestals, etc. on the response of machine, along with some case studies, are also presented. The paper also touches upon the effects of earthquakes on machines as well as on their foundations. Use of commercially available finite element packages, for analysis and design of the foundation, is strongly recommended, but with caution. 

KEYWORDS: Machine Foundation, Dynamic Response, Seismic Qualification, Design Aids, Vibration Isolation 


Thanks to  
K.G. Bhatia 
Center for Applied Dynamics D-CAD Technologies, 
New Delhi

Er. SP.ASWINPALANIAPPAN., M.E.,(Strut/.,)
Structural Engineer
http://ganeshadesigningstudio.in/

Role Of Civil Engineer In Oil And Gas Industry

 

Role Of Civil Engineer In the Oil And Gas Industry

The oil and gas industry offers a wide range of careers, each with its own set of skills and educational requirements. This industry is also rapidly expanding, which means that employers are frequently in need of qualified personnel to fill open positions. In this article, we discuss the Role Of Civil Engineer In the Oil And Gas Industry.

Civil engineers are in high demand in oil and gas companies, as such, they earn very competitive salaries – with an average annual salary of ₦1,285,901As a Civil Engineer working offshore, you’ll have the opportunity to work with some of the biggest oil companies like Shell, Chevron, Total, Oando, etc. 

 

Who are Civil Engineers, and What Do They Do?

The job of a civil engineer usually starts with the identification of a need. It could be the need to provide clean water to a remote community, relieve a city of growing traffic, or construct a bridge to improve access across urban areas. The civil engineer looks into potential locations, analyzes soil and rock samples, forecasts environmental effects, and consults with locals. 

Civil engineers are on-site to create detailed project drawings/maps and supervise the work of other technical workers. They organize and supervise the workforce, plant, and materials, ensuring that the project is completed according to the design, plan, budget, and schedule.

Role of civil engineer in oil and gas industry, civil engineering, civil engineer

Responsibilities and Roles of a Civil Engineer In the Oil And Gas Industry

Civil engineering is one of the oldest professional engineering disciplines, dealing with the planning, designing, supervising, and then maintaining infrastructure facilities that are necessary for modern life. Oil companies require civil engineers because they require infrastructures such as oil fields, pipelines, foundations, and shelters for various equipment, storage facilities, and so on.

There are various subfields in the oil and gas industry that a civil engineer can work in, such as oil fields, gas fields, pipelines, storage facilities, oil refineries, and fuel stations. In each of these fields, civil engineers will play a critical role in the design, construction, and maintenance of specific projects or facilities. 

As a result, almost all on-shore and offshore oil companies will require an in-house civil engineer to complete the tasks listed above. The majority of work, such as engineering design and consultancy, construction, and so on, is outsourced to oil marketing companies and the focus is primarily on selling various petroleum products and maximizing profits. The following are some examples of roles:

  1. Civil engineers are involved in the construction of pumping stations, and hydraulic protection along the pipeline route, such as retaining walls, masonry structures, surveying routes, and levels, as well as engineering change orders. 
  2. Civil engineers are involved in asset management and carry out routine maintenance on the oil plant to ensure optimum efficiency. 
  3. Civil engineers are also responsible for the design and construction of onshore oil facilities such as work sheds, block valve stations, buildings, warehouses, control rooms, submerged pipelines, and tunnels for oil or gas transmission.
  4. Aside from designing major projects, civil engineers also perform site visits, offer technical support to multiple teams, and supervise contractor delivery.

Role of civil engineer in oil and gas industry, civil engineering, civil engineer

Career Opportunities For Civil Engineers in Oil & Gas Industry

Civil engineering is a discipline that entails the construction of a wide range of infrastructures, including buildings, bridges, dams, roads, and drainage systems. The following is a list of the various specializations available to civil engineers:

1. Structural Civil Engineers

Structural civil engineers collaborate with architects and builders to ensure that the amount of steel and other materials used in construction projects meets or exceeds the project’s requirements. These civil engineers now work on a wider range of projects than ever before, thanks to advances in technology and an abundance of innovative new building materials.

Structural engineers may work in the oil and gas industry developing and designing new offshore oil rigs in previously unstable locations. Other large construction projects that these professionals work on include inner-city light rail systems and underground supports for new skyscrapers.

 

2. Geotechnical Civil Engineers

Geotechnical civil engineers work with experts who manage difficult land renewal projects and assist builders in excavating underground projects. Cities hire geotechnical engineers to supervise tunneling when they want to expand their underground mass transit systems. Geotechnical engineers ensure that the bedrock can safely support the pressure of new structures. 

In urban cities, geotechnical civil engineers work with emergency management planners to strengthen flood-prone river banks that are close to residential housing developments. They assist in the design of dams and levees to control water flow in the area. They also coordinate the design and location of landfills and quarries to reduce the environmental impact on nearby homes and businesses.

 

3. Transportation Civil Engineers

Transportation civil engineers assist us in moving around our communities and across the country. They collaborate with local and regional planning boards to identify growth and development opportunities. They also look for ways to reduce traffic congestion. Transportation civil engineers design, plan and develop cost estimates for construction projects after they understand the needs of drivers in a given region. 

Transportation engineers supervise a variety of subcontractors who build roads, highways, and bridges after a new project plan has been funded. Following the completion of the structure, transportation engineers ensure that roads are properly maintained and repaired as needed. Transportation engineers must follow a plethora of local and federal policies for safe construction and maintenance while serving the public.

 

4. Construction Civil Engineers

Construction civil engineers combine their engineering and management skills to ensure that construction projects are completed on time and on budget. To meet tight production schedules, construction managers must coordinate the efforts of teams of engineers and laborers. They are frequently the most visible point of contact for architects, developers, and construction professionals. 

Though civil engineering degrees are not required for all construction managers, this field of study can benefit a future construction manager in a variety of ways. Construction managers can build positive working relationships with consultants and team members by communicating on the same level and in the same language as specialist engineers. They can also spot potential mistakes more quickly without having to wait for consultants to arrive at the job site.

 

5. Environmental Engineers

Environmental engineers are working hard to return us to a time when we could breathe cleaner air and drink cleaner water. They collaborate closely with business leaders and government officials to develop new air pollution standards that reduce harmful emissions from factories while preserving industrial output. They create sophisticated treatment systems to remove pollutants from our air, water, and wastewater. 

Environmental engineers also inspect the soil quality, ensuring that harmful toxins do not seep up through the ground or waterways. They collaborate with agricultural companies to ensure that pesticides and soil nutrients have no impact on the quality of the food we eat. They also reassure residents in new developments that their homes were not constructed on contaminated land.

 

6. Hydraulic/Hydrology/Water Resource Civil Engineers

Hydraulic/Hydrology/Water Resource civil engineers are redirected by civil engineers to benefit residents and businesses in a community. They build canals to speed up shipping while preserving a region’s natural flow of wild fish. These civil engineers also construct dams that generate vital electricity while also allowing for the development of new land parcels. 

They create pipelines that safely transport fresh water to far-flung locations, allowing new communities to flourish. Engineers in charge of water resources also oversee environmental projects. They design intricate soil drainage systems to ensure that new development does not have a negative impact on existing communities downstream. They contribute to water conservation by installing advanced rainwater collection systems for irrigation and grounds maintenance. 

 

Conclusion

There are many opportunities that require the role of a civil engineer in the oil and gas industry. As a civil engineer working offshore, you will be tasked with maintaining the structural integrity of the rig while also providing cost-effective solutions.

You’ll also play a key role in the design of major international projects and collaborate with other structural engineers. Because of increased demand in the field, civil engineers are often involved in the design and construction of new oil facilities, warehouses, workshops, and control rooms.

They’re also in charge of laying out and arranging pipes, tubes, and vents, as well as ensuring that oil plants are properly maintained.



Thanks to 

SANA GLOBAL PROJECT

Er. SP.ASWINPALANIAPPAN., M.E.,(Strut/.,)

Structural Engineer

http://civilbaselife.blogspot.com/

http://ganeshadesigningstudio.in/


Tuesday, 17 May 2022

Dynamics of Foundations



Dynamics of Foundations


Abstract

Dynamics of foundations are part of the more general field of dynamic soil-structure interaction, which is concerned with the study of structures based on flexible soils and subjected to dynamic actions that may be directly applied to the structure or transmitted through the soil.

Keywords

  • Fundamental Solution
  • Boundary Element Method
  • Stiffness Coefficient
  • Dynamic Stiffness
  • Soil Deposit
Thanks to 
  • Chapter

Part of the Topics in Boundary Element Research book series (TBOU, volume 4)



Er. SP.ASWINPALANIAPPAN., M.E.,(Strut/.,)
Structural Engineer
http://ganeshadesigningstudio.in/


"கட்டுமான விரிசல்களை தடுக்கும் நவீன முறை" EPOXY INJECTION METHOD (வேதிப்பொருட்கள் கலந்த பிசின் கலவையை செலுத்தும் முறை)

Description: Related image



"கட்டுமான  விரிசல்களை தடுக்கும் நவீன முறை" EPOXY INJECTION METHOD (வேதிப்பொருட்கள் கலந்த பிசின் கலவையை செலுத்தும் முறை)
நமது முன்னோர்களால்  கட்டப்பட்ட செட்டிநாட்டு வீடுகள் இன்று பாரம்பரிய சின்னங்களாக விளங்குகின்றன. ஒவ்வொரு வீடும் அரண்மனை மாதிரி காட்சி அளிக்கும். நம் செட்டிநாட்டு வீடுகள் வெயிலுக்கும் மழைக்கும் ஏற்றவாறு கட்டப்படிருக்க கூடியவை. வீட்டினுள் எப்போதும் ஒரு குளுமை .இருக்கும். சுவர்களில் சிமிண்டுடன் முட்டை கலந்து பூசப்பட்டிருக்கும்.இதனால் சுவர்கள் மிக வழவழப்பாக இருக்கும். இவ்வளவு பாரம்பரியமிக்க நமது நகரத்தார் கட்டிடங்களை பாதுகாப்பது நமது கடமை தானே.
கட்டுமானங்களுக்கு அதிகமான பாதிப்பை ஏற்படுத்துபவை விரிசல்கள். சுவர்களிலும், அஸ்திவார பகுதிகளிலும் இவை ஆக்கிரமித்து கட்டுமானத்தை ஆட்டம்காண  செய்துவிடுகின்றன. பொதுவாக விரிசல்கள் ஏற்படுவதற்கு வீடுகளின் அருகில் இருக்கும் மரங்கள், ஈரத்தன்மையான நிலப்பரப்புகள், குளங்கள் போன்ற நீர்நிலைகள் முக்கிய காரணமாக இருக்கின்றன.
தற்போது கட்டுமானத்துறையில் நவீன தொழில்நுட்பங்கள் கையாளப்பட்டுவரும் வேலையில் விரிசல்களை சரிசெய்யும் முறையும் மாறுபட்டுள்ளது. விரிசல்கள் வீட்டின் தாங்குத்திறனை உருக்குலைக்க கூடியவை. சுவர்களையும், அஸ்திவாரங்களையும் நிலைகுலைய செய்யும் விரிசல்களை "வேதிப்பொருட்கள் கலந்த பிசின் கலவையை செலுத்தும் முறை மூலம் கான்கிரிட் கட்டிடங்களில் விரிசல்களை சீர்செய ".
Description: Related imageவேதிப்பொருட்கள் கலந்த பிசின் கலவை கொண்டு கட்டுமானத்தில் ஏற்படும் விரிசல்களில் இருந்து கான்கிரீட் கட்டமைப்பை மீட்க பயன்படுத்தும் முறையே EPOXY INJECTION METHOD (EIM) ஆகும். பிசினின் (EPOXY RESIN) பண்புகள் கட்டிடத்தின் விரிசல்களை சீர்செய்ய நம்பகத்தன்மையுடன் உள்ளன என்பது  2011 ம்  ஆண்டில் ஆய்வில் தெளிவானது. குறிப்பிட்ட மூன்று விதமான பிசின்கள் பயன்படுத்துகின்றன. வலுவிழந்த கான்கிரீட் பீம்களில் ஏற்படும் விரிசல்கள் , இணைப்புகளில் ஏற்படும் விரிசல்கள்என மோசமான பாதிப்புகளால்  ஏற்படக்கூடிய விரிசல்கள் கூட இந்த முறையின்முலம் சீர்செய்ய இயலும் தற்பொழுது இந்த முறையானது மேல்பூச்சு, இணைப்பகுதி, வார்ப்புகள் (Casting)போன்றவற்றிலும் பயன்படுத்தப்படுகின்றன. இந்த முறை மிகவும் துரிதமாக விரிசலை அடைக்கும் முறையாகும் .





இவை இரண்டு முறைகளில் செயல் படுத்தப்படுகின்றன அவை ,
  1. வேதிப்பொருட்கள் கலந்த பிசின் உட்செலுத்தும் முறை (Injection Method)
  2. வேதிப்பொருளை புவியீர்ப்பு மூலம் நிறப்புமுறை (Gravity filling)             
Description: Related imageDescription: Related image
Description: Image result for epoxy injection method figures
EPOXY INJECTION METHOD
இந்த முறையில் வேதிப்பொருட்கள் கலந்த கலவை செலுத்தப்பட்ட பிறகு கட்டிட அமைப்பானது மிகுந்த இழுவிசை  சக்தியுடணும்(High Tensile Strength), மற்றும் அதிக அழுத்த விசையுடனும்(High Compressive Strength) இருக்கிறது.
   Description: C:\Users\PLS\Desktop\aswinPLS\aswin\aswinPLS\Er.aswinPLS\02.jpg
சுப .அஸ்வின்பழனியப்பன் (M.E.,* STRUCTURAL ENGINEERING)
            www.civilbaselife.blogspot.in

Monday, 16 May 2022

5 Stages in Construction to Complete any Projects

 

5 Stages in Construction to Complete any Projects


In this article, we explain different stages of construction, what are the purposes of all stages in construction, which activity includes these stages, and so on more

Stages in Construction

The main stages of any construction project are as follows. 

  • Report Stage or Briefing Stage
  • Designing Stage
  • Tendering Stage
  • Construction Stage
  • Commissioning Stage 

1. Briefing Stage:

Briefing Stage Also called ‘Report Stage. The briefing stage is the first stage of construction. In which the ideas, costs, and benefits of different individuals are studied keeping in mind the project cost is reduced as well as the usefulness of the project increases.

Purpose of briefing stages in construction:

The purpose of the briefing stage is to determine the requirements of the owner regarding the project and to determine the cost limit

Activities in the briefing stage:

  • Appoint a project steering committee. 
  • Appoint a project manager who is responsible to the owner throughout the project. 
  • Technical Investigation
  • The non-technical investigation includes economic and social factors, market surveys, etc. 
  • Study the different options and choose the project with the most suitable option. 
  • Prepare a project report, which mentions the investigation, analysis, and solution done.

See best books for construction project management on amazon

2. Designing or Planning Stages in construction:

During this stage project cost estimate is prepared.

Purpose planning stage:

  • Completing the project report (Project Summary).
  • Determining the project cost.            
  • Determining the construction methods.
  • To do Drawing specification ready.

Activities in Planning stages:

  • Preparation of project report. 
  • To prepare detailed designs and drawings. 
  • To prepare detailed specifications. 
  • Determining the project cost. 
  • Preparation of preliminary construction program along with timesheet. 

Construction Project Management best book by an Indian Author

3. Tendering Stage:

The next stage in construction is tendering stage. In this stage bidding of tender is done by different contractors for the project. And the work is assigned to the most suitable contractor. 

Purpose of tendering stage:

Assign work to the contractor who is most favorable in terms of tender terms, cost, and quality

Activities in tendering stage:

  • Inviting tenders, and selecting contractors. 
  • Prepare contract documents and enter into an agreement between the owner and the contractor.

Book for construction project management

4. Construction Stage:

After the tendering stage, the next stage is the construction stage. In this stage, the construction of a given project is completed within a given time limit by the contractor.

Purpose of Construction stage:

To construct as per design with good quality, within prescribed cost and time limit 

Activity in the construction stage:

  • Prepare construction schedule. 
  • Preparation of Manpower Schedule. 
  • Preparation of Plant and Machinery Schedule. 
  • Preparation of Material Delivery Schedule. 
  • Control work on site. 
  • To ensure that the quality of construction is maintained during the work. 
  • Carrying out the work as per the schedule without incurring any expenditure of goods, manpower, or money. 

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5. Commissioning Stage:

The last stage in construction is the commissioning stage. The purpose of the commissioning stage is described below.

Purpose of commissioning stage:

The main purpose of this stage is to ensure that the construction is done as shown in the contract document as well as whether the various services are available as decided in the design.

 Activities in the Commissioning stage:

  • Keep a record of actual work done. 
  •  Properly inspect the construction and remove any defects. 
  • To make arrangements for maintenance of construction. 
Er. SP.ASWINPALANIAPPAN., M.E.,(Strut/.,)
Structural Engineer
http://ganeshadesigningstudio.in/