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PCC Cement IS 1489: 1991

Cement IS 1489: 1991

•  PCC Cementis manufactured by opc clinker with latest amendment it is 15 to 35%
• The pozzolonic materials generally used for manufacture of ppc are cacinet clay fly ash
• Fly ash is a waste material generated in the thermal power station when powered coal is used as fuel
• Calcium hydroxide + pozzolona + water - C-S-H gel
• Ppc produces less heat of hydration and offer greater resistance to the attack of aggressive mass of water
than opc
• Gt reducing leaching of calcium hydroxide when used in hydraulic structures
• Gt is generally used in marine and hydraulic structure construction and other mass concrete
construction.
Advantage of PPC
• Costly clinker is replaced by cheaper pozzolonic materials cheaper in cost
• Soluble CaOH is converted into insoluble cementeous products results in improvement permeability
durable for hydraulic structure and marine works
• Its generates reduced heat of hydration and that too at low rate
• Ppc being finer than opc and also due to pozzolonic action it improves pore size distribution and reduce micro crack .
• Fly ash is finer and lower density the bulk volume of 50 kg bag is slightly more than opc gives more volume of mortar than opc.



JPSC AE Recruitment 2018-2019 for 57 Vacancies

Jharkhand Public Service Commission Recruitment 2018– JPSC has issued a notification for the recruitment of Assistant Engineer (Civil/ Mechanical) Vacancy at 57  Post .

1. Assistant Engineer Civil   - 48 seats 

2. Assistant Engineer Mechanical - 9 seats 

Educational Qualifications  for JPSC AE -  

Candidates should have passed  B.Tech , B.E..
Age:
The candidate age should be between 20-40 years. Upper age limit for SC/ST/PWD applicable as per Govt. guidelines

Pay or Salary of jpsc ae:

The Pay Scale of Rs.9300-34800/- with Grade pay of Rs.5400/- per month.

Selection Procedure for JPSC ae :

The selection procedure will be made on the performance in Written test and Interview


Important Dates for jpsc ae exam 
Online submission of applications 14 Sept. 2018
Last date of application submission29 oct. 2018
Admit Card/ Result
For Jharkhand Public Service Commission – Assistant Engineer (Civil/ Mechanical) you can take print out of your Admit Card| Answer Key or Result from here:-
 Admit Card
⇒ Answerkey
⇒ Result

About Jpsc 
The State of JHARKHAND came into existence on 15th November, 2000 by carving out 18 districts of Bihar. The JHARKHAND Public Service Commission was constituted under the provisions of the Article 315 of the Constitution of India by the Governor of JHARKHAND. Jharkhand Public Service Commission (JPSC) was established with the aim of making a commission fully responsible for making the recruitment for the government posts in the state. The main objective of the Jharkhand Public Service Commission (JPSC) is to conduct written competitive examination and also the interviews for the selections of the candidates for any government posts in the state.

Vizag Steel 664 JUNIOR TRAINEES requirement

About RINL
Rashtriya Ispat Nigam Limited (RINL) is the corporate entity of Visakhapatnam Steel Plant (VSP), India’s first shore-based integrated Steel Plant built with state-of-the-art technology and a prime producer of long steel products in the country having extensive market in infrastructure, construction, automobile, electrical and forging industry. With an annual turnover of over Rs16000 crores, VSP is gearing up production to achieve rated capacity of 7.3 Mtpa liquid steel having three Captive Mines and 25 Marketing Branches Pan India. Forged Wheel Plant is another unit of RINL being setup at Raebareli, UP.
QUALIFICATION: 
Matric / SSC with full time ITI / Diploma in Engineering in the following Trades/ Disciplines (60% marks in regular ITI / Diploma in Engineering for Gen/OBC-NCL candidates, 50% marks for SC/ST/PWD candidates in all subjects of all semesters / years):

SELECTION PROCEDURE: Selection will be through Online Computer Based Test followed by Certificate Verification and Medical Examination to the provisionally selected candidates. Test Pattern: Test will consist two segments and duration of the test will be 2 hours:  Segment-I: 75 Questions pertaining to General Aptitude (i.e Arithmetic, Reasoning, Data interpretation etc.), General Awareness / General Knowledge and knowledge of English,  Segment-II: 75 Questions pertaining to respective technical subject. 

RINL invites young, dynamic talented individuals to join as “Junior Trainees” in the following branches: 
BranchNo. of Posts
Mechanical344
Electrical203
Metallurgy98
Instrumentation19
Total Posts644                                                                                           
Important Dates
Online submission of applications05 Sept. 2018
Last date of application submission25 Sept. 2018
AGE (As on 01.07.2018):  As per Rules Minimum 18 Years  and maximum 27 year

Shallow foundation & there types with detail

Foundations may be broadly classified under two heads  
Shallow Foundations :A foundation is shallow if its depth is equal to or less than its width.
Deep Foundations : In case of deep foundations, the depth is equal to or greater than its width.
SHALLOW FOUNDATIONS:
From the point of view of design, shallow foundations may be of the following types:
1 Spread footings
2 Combined footings
3 Strap footings
4 Mat foundation
 1.Spread footingsSpread footings are those which spread the super-imposed load of wall or column over a larger area. Spread footings support either a column or wall. 
Spread footings may be of the following kinds :
Single footing for a column
Stepped footing for a column 
Sloped footing for a column 
Wall footing without step 
Stepped footing for wall
picture credit :BuildingHow

Combined footings -Combined Footings a spread footing which supports two or more columns is termed as combined footing. Combined footings are invariably constructed of reinforced concrete. The combined footing for columns will be rectangular in shape if they carry equal Loads. The design of rigid rectangular combined footing should be done in such a way that centre of gravity of column loads coincide with the centroid of the footing area. 
If the columns carry unequal loads, the footing is of trapezoidal shape.
Sometimes, It may be required to provide a combined footing for columns and a wall.
The combined footings may be of the following kinds:
Rectangular combined footing 
Trapezoidal combined footing
Combined column-wall footings
picture credit : Builder's Engineer

Strap footings If the independent footings of two columns are connected by a beam, it is called a strap footing. A strap footing may be used where the distance between the columns is so great that a combined trapezoidal footing becomes quite narrow, with high bending moments. In that case, each column is provided with its independent footings and a beam is used to connect the two footings. The strap serves to transfer the column loads on to the soil with equal and uniform soil pressure under both footings.
picture credit : Wikipedia

4 Mat or Raft Foundation -A raft or mat is a combined footing that covers the entire area beneath a structure and supports all the walls and columns. 
When the allowable soil pressure is low, or the building Loads are heavy, the use of spread footings would cover more than one half the area and it may prove more economical to use mat or raft foundation. They are also used where the soil mass contains compressible lenses or the soil is sufficiently erratic so that the differential settlement would be difficult to control. 
Raft foundation is also used to reduce settlement above highly compressible soils, by making the weight of structure and raft approximately equal to the weight of the soil excavated.
picture credit Gharpedia.com

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Centre of gravity and moment of Inertia hand written notes

Content of pdf 
Centroid
Moment of Inertia
Product of Inertia
Parallel axis Theorem
Perpendicular axis theorem
Properties of plan areas
Principal axes and principal moments of inertia
Rotation of axes
The centroid, or center of gravity, of any object is the point within that object from which the force of gravity appears to act. • An object will remain at rest if it is balanced on any point along a vertical line passing through its center of gravity.
Moment of Inertia - It is a measure of an object’s resistance to changes to its rotation. Also defined as the capacity of a cross-section to resist bending. . It must be specified with respect to a chosen axis of rotation. • It is usually quantified in m4 or kgm2.



Slopes and Deflections

Content
Introduction of Slope and deflection
Methods for determining slope and deflection
1 Double integration method (Slopes and Deflections)
2 Macaulay's method ( Slopes and Deflections)
3 Area moment method ( Slopes and Deflections)
4 Conjugate beam method ( Slopes and Deflections)
5 Strain energy method ( Slopes and Deflections)
6. Method of superposition ( Slopes and Deflections)
7 Application of maxwell's reciprocal theorem (Slopes and Deflections)


Deflection of a beam: The deflection at any point on the axis of the beam is the distance between its position before and after loading.
Slope of a beam: slope at any section in a deflected beam is defined as the angle in radian which the tangent at the section makes with the original axis of the beam.
here we provide hand written notes of Slope and deflection for all competitive exams .




basic of irrigation engineering

Content
Global estimates of waters
Definition of Irrigation
Advantages of Irrigation
Disadvantages of Irrigation
Types of Irrigation
surface irrigation
sub surface irrigation
Techniques of water distribution
Quality of irrigation water
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Civil Engineering Interview Questions

Civil Engineering Interview Questions Q1 . What is civil engineering ?  Q2  What is work of a civil engineer ?  Q3  Define various...