Monday, December 20, 2021
civil engineer interview question
civil engineer interview questions
1. how many inches inone feet
2. what are steps involved in the concreting process ?
3. how many kg cement inone bag ?
4. what is the bearing capacity of soil ?
5. what is M20 concrete ?
6. why is concrete cube test carried out ?
7. what is the ratio of steel bar & concrete to use in slab,beam,coloumns ?
8. what is bleeding of concrete ?
9. how to calculate weight of steel bar ?
10. how to calculate bricks in wall ?
11. what is plinth level ?
12. how many types of joint are in concrete pavement ?
13. how many feet in 1 square yard?
14. what do you mean by Fe415 ?
15. what does 33,43,53 grade of cement mean ?
16. types of concrete ?
17. types of load on structure ?
18. is brick strength more or concrete block ?
19. which is stronger solid steel rod or hollow steel pipe ?
20. how many feet in 1 meter ?
21. how many liter in 1 cubic meter ?
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22. describe various type of curing ?
23. what is pile foundation ?
24. define water cement ratio?
25. define light weight concrete ?
26. define types of beam ?
27. define types of footing ?
28. what is the unit weight of fine aggregate ?
29. what is working stess method ?
30. how many methods of leveling are used in civil engineering ?
31. what is hollow core slab
32. what is coffer slab ?
33. what is mat foundation ?
34. what is meant by pt slab ?
35. what is a waffle slab ?
36. what is the difference between raft and footing ?
37. how thick is the foundation of a house ?
38. what is the slum test ?
39. what is the slump value of concrete ?
40. what is the combined footing ?
41. what is the density of loose cement ?
42. how to calculating height using Angle & Distance ?
43. what is bar bendig schedule?
44. how to avoid corrosion ?
45. what is the unit weight of steel ?
#civilengineer #civil #jscivil
Monday, January 4, 2021
GRADE OF CONCRETE , concrete grade table , concrete grade for slab, concrete grades and mix ratio pdf , types of concrete ,concrete grade 20 ,
GRADE OF CONCRETE AS PER IS CODE
The clause states ''the concrete is normally a gain of strength beyound 28 days the quantum of increase depend upon the grade and type of cemnt ,curing etc .the design should be based on 28 days characterstic strength of concrete unless there is an evidence to justify a higher strength for a particular structure due to age .
in simple language ,the strength of the concrete ,the minimum strength the concrete should have 28 days of initial construction .
M stands for Mix
15,20 stands for number compressive strength of concrete in N/mm2
Group
grade of concrete are divide in three parts Ordinary concrete,Standard concrete , High strength concrete.
Many research workers have attempted to estimate the strength of concrete at 1 , 3 or 7 days and correlate it to 28 days strength .
Grade of concrete use for slab
⦁ Genrally M 10 and M 15 grades of concrete are used for leveling course ,footing etc
⦁ standard concrete M 20 is applicable for reinforced cement concrete works for coloumns , beams , slab etc. moreover, the high strength concrete has its application for high rise building and some bridges .
GRADE OF CONCRETE , concrete grade table , concrete grade for slab, concrete grades and mix ratio pdf , types of concrete ,concrete grade 20
Monday, October 5, 2020
ਦੇਖੋ ਇੱਕ ਬਿਸਵਾ ਕਿੰਨੇ ਫੁੱਟ ਦਾ ,ਇੱਕ ਕਨਾਲ ਦੇ ਫੁੱਟ land measurement in punjab calculator 1 marla to square feet in punjab 1 killa land price in punjab
ਦੇਖੋ ਇੱਕ ਬਿਸਵਾ ਕਿੰਨੇ ਫੁੱਟ ਦਾ ,ਇੱਕ ਕਨਾਲ ਦੇ ਫੁੱਟ
\ਅੱਜ ਦੀ ਅਸੀਂ ਆਪਣੀ ਇਸ ਪੋਸਟ ਵਿੱਚ ਦੱਸਾਗੇ ਕਿ ਅਸੀਂ ਆਪਣੀ ਜਮੀਨ ਦੀ ਮਿਣਤੀ ਕਿਸ ਤਰ੍ਹਾਂ ਕਰ ਸਕਦੇ ਹਾਂ ਅੱਜ ਕੱਲ ਦੀ ਪੀੜੀ ਲਈ ਬਹੁਤ ਜਰੂਰੀ ਹੈ ।
ਸਾਨੂੰ ਪਤਾ ਹੋਣਾ ਚਾਹੀਦਾ ਹੈ ਕਿ ਜਰੀਬ ਕਿੰਨੇ ਫੁੱਟ ਦੀ ਹੁੰਦੀ ਹੈ ?
ਇੱਕ ਏਕੜ 'ਚ ਕਿੰਨੇ ਫੁੱਟ ਹੁੰਦੇ ਹਨ ?
ਇੱਕ ਵਿਸਵਾਂ ਚ ਕਿੰਨੇ ਕਨਾਲ ਹੁੰਦੇ ?
ਇਹਨਾਂ ਦੇਸੀ ਮਿਣਤੀ ਦੀ ਜਾਣਕਾਰੀ ਹੋਣੀ ਬਹੁਤ ਜ਼ਰੂਰੀ ਹੈ।
ਇੱਕ ਏਕਡ਼ :- 8 ਕਨਾਲ , 160 ਮਰਲੇ , 96 ਵਿ ਸਵੇ ,
4.8 ਵਿੱਘਾ , 1440 ਵ : ਫੁੱਟ
ਇੱਕ ਵਿਸਵਾ :- 50 ਵ : ਗਜ , 15 ਵ : ਕਰਮ ,
1.660 ਮਰਲੇ , 453.75 ਵ : ਫੁੱਟ
ਇੱਕ ਕਨਾਲ :- 5445 ਵ : ਫੁੱਟ , 180 ਵ : ਕਰਮ
20 ਮਰਲੇ , 12 ਵਿਸਵੇ
ਇੱਕ ਵਿੱਘਾ :- 9075 ਵ : ਫੁੱਟ , 300 ਵ : ਕਰਮ ,
33.3 ਮਰਲੇ , 20 ਵਿਸਵੇ
ਇੱਕ ਮਰਲਾ :- 272.25 ਵ : ਫੁੱਟ , 9 ਵ : ਕਰਮ
30 ਵ : ਗਜ , 0.6 ਵਿਸਵੇ
ਇੱਕ ਗਜ :- 0.91 ਮੀਟਰ
ਇੱਕ ਮੀਟਰ :- 1.09 ਗਜ
ਇੱਕ ਕਰਮ :- 5 ਫੁੱਟ 6 ਇੰਚ
ਜਰੀਬ ਦੀ ਲੰਬਾਈ :- 55 ਫੁੱਟ , 10 ਕਰਮ ,
16.76 ਮੀਟਰ , 18.32 ਗਜ
ਅਸੀ ਉਮੀਦ ਕਰਦੇ ਹਾਂ ਕਿ ਤੁਹਾਨੂੰ ਸਾਡੀ ਪੋਸਟ ਚੰਗੀ ਲੱਗੀ ਹੋਵੇਗੀ ਜੇਕਰ ਤੁਹਾਨੂੰ ਸਾਡੀ ਪੋਸਟ ਚੰਗੀ ਲੱਗੀ ਤਾਂ ਸਾਨੂੰ SUBSCRIBE ਜਰੂਰ ਕਰੋ ।
ਇਹ ਦੇਸੀ ਮਿਣਤੀ ਵਿੱਚ ਆਪਣੇ ਰਾਜ ਤੋਂ ਦੂਜੇ ਰਾਜ ਦੀ ਮਿਣਤੀ ਵਿੱਚ ਅੰਤਰ ਹੁੰਦਾ ਹੈ।
Sunday, June 14, 2020
Construction Cost of 1000 sq ft house
Construction Cost of 1000 sq ft house
Rate - 1400 sq ft (for normal house )
luxury - 1500/2200 sq ft
1400 x 1000 =14,00000/- rs
1) Labour cost - 25% = 3,50,000/
2) Brick work - 12% = 1,68,000
3) Cement cost - 13% = 1,82,000
4) Steel - 10% = 1,40,000
5) Door or window - 12% = 1,68,000
6) Electric work - 8% = 1,12,000
7) Sand and Aggrigate - 5% = 70,000
8) Water and severage work - 12% = 1,68,000
9) Extra - 3% = 42,000
total cost = 14,00000/-
Monday, April 13, 2020
WHY SUGAR ARE ADDED IN CONCRETE
WHY SUGAR ARE ADDED IN CONCRETE
Sugar is actually a well known 'retardant of concrete and often used to help adjust the setting times especially in emergencies,some transmit mixer transporting RMC gets stuck in the mid of traffic for a long time then what will be remedy in avoiding concrete from getting set . ...in the case of sugar the setting process is slowed down
In simple terms ,it based on glucose catalytic principle. according to this formula the surface of sugar has strong polarity it results in solid adsorption thus it hinders the crystal contact and calcium silicate hydrates reaction.
Results based on test
⦁ sugar like glucose ,raffinose act as good retarders.
⦁ the addition of OPC would give retardation of 4 hrs
⦁ the amount of sugar that should be used to keep concrete from fully hardening ranges from 1.0 to 1.5 percent by weight of cement .
Saturday, April 11, 2020
How to check brick work in building construction ?
How to check brick work in building construction ?
what to check in brick work ?
⦁ The face joint should be raked to depth of 15 to 18 mm by raking tool when the mortar is still green so as to providing proper key for plaster .
⦁ check that the brick work is in plumb.
⦁ all brick shall be thoroughly soaked in clean water for at least 4 hours in tank of sufficient size immediately before use .
⦁ check bonding of cross wall with long wall.
⦁ check that the brick courses are in level.
⦁ the thickness of joint in brick masonry should not exceed 1 cm .
⦁ check general quality of work with reference to lines,level thickness of the joint .
⦁ half cut bricks shall not be allowed except at joint .
⦁ check the quality of brick with specific reference to
strength
water absorption
size
⦁ check the quality of sand in mortar .
⦁ check the arrangement of curing.
⦁ the curing shall be carried out for a minimum period of one week .
⦁ whether joint of brick are filled with mortar fully,check especially vertical joints.
what to check in brick work ?
⦁ The face joint should be raked to depth of 15 to 18 mm by raking tool when the mortar is still green so as to providing proper key for plaster .
⦁ check that the brick work is in plumb.
⦁ all brick shall be thoroughly soaked in clean water for at least 4 hours in tank of sufficient size immediately before use .
⦁ check bonding of cross wall with long wall.
⦁ check that the brick courses are in level.
⦁ the thickness of joint in brick masonry should not exceed 1 cm .
⦁ check general quality of work with reference to lines,level thickness of the joint .
⦁ half cut bricks shall not be allowed except at joint .
⦁ check the quality of brick with specific reference to
strength
water absorption
size
⦁ check the quality of sand in mortar .
⦁ check the arrangement of curing.
⦁ the curing shall be carried out for a minimum period of one week .
⦁ whether joint of brick are filled with mortar fully,check especially vertical joints.
Wednesday, April 8, 2020
Difference Between Civil Site Engineer and Site Supervisor
Difference Between Civil Site Engineer and Site Supervisor
Site engineer
A site engineer is a part of the site management team,and takes some of the responsibility for security,health and safety .site engineer mark out the site make sure designs and applied correctly and lise with main and sub contractor and the site manager .
site engineer depends on the type of work involved .
⦁ Calculating the quantity of material.
⦁ Resolving technical issues.
⦁ Quality control.
⦁ Preparing record drawings technical reports, site diary .
⦁ supervision and counselling junior .
⦁ tracking up the material wastage.
⦁ measurement and valuation .
⦁ checking material and work in progress.
⦁ setting out the work .
site supervisor
The role of supervisor generally involves the management and supervision of a construction site in accordance with health and safety guidelines the site supervisor will typically work closely with the site foreman, who is responsible for organising construction work on site and report to the project manager .
site supervisor depend on the types of work involved .
⦁ supervising the labour .
⦁ Monitoring the work .
⦁ Monitor progress, oversee the delivery of materials .
⦁ Responsibility of supervising the whole site .
⦁ study the drawings and execute the work .
⦁ Ensure that work done safely .
⦁ oversee operation .
Site engineer
A site engineer is a part of the site management team,and takes some of the responsibility for security,health and safety .site engineer mark out the site make sure designs and applied correctly and lise with main and sub contractor and the site manager .
site engineer depends on the type of work involved .
⦁ Calculating the quantity of material.
⦁ Resolving technical issues.
⦁ Quality control.
⦁ Preparing record drawings technical reports, site diary .
⦁ supervision and counselling junior .
⦁ tracking up the material wastage.
⦁ measurement and valuation .
⦁ checking material and work in progress.
⦁ setting out the work .
site supervisor
The role of supervisor generally involves the management and supervision of a construction site in accordance with health and safety guidelines the site supervisor will typically work closely with the site foreman, who is responsible for organising construction work on site and report to the project manager .
site supervisor depend on the types of work involved .
⦁ supervising the labour .
⦁ Monitoring the work .
⦁ Monitor progress, oversee the delivery of materials .
⦁ Responsibility of supervising the whole site .
⦁ study the drawings and execute the work .
⦁ Ensure that work done safely .
⦁ oversee operation .
Tuesday, April 7, 2020
AAC Block Vs Red bricks :How to Make the Right Choice!
AAC Block Vs Red bricks :How to Make the Right Choice!
AAC Block
Autoclaved aerated concrete is light weight durable building product. AAC block is light weight and compare to the red bricks.
Raw material
It is manufactured through a reaction of aluminium powder and cement fly ash ,lime and sand etc.
ADVANTAGES
⦁ AAC block are light weight building material .
⦁ AAC block are very easy to handle and ordinary tools can be used for cutting. the AAC block are perfect in shape and size.
⦁ AAC block can be used to building both internal and external walls.
⦁ sound proof in nature .
⦁ less labour are required .the speed of work will be double than that of the brick work.
⦁ AAC block are recommended for high-rise building ,because it educed to total dead load .
⦁ require less mortar due to even surface & less number of joints.
⦁ AAC blocks masonry requires less curing , hence less water and less electricity are required .
⦁ 1 cum block work cost is (around INR 3150/ -in india )
⦁ steel saving up to 18% & concrete saving up to 9 %
⦁ The AAC Block have a compressive strength of an average 3 , 4.5 N/mm3 ( natural dry density 550-650 Kg/m3 )
⦁ AAC Block conduction of heat is high in comparison to clay and Brick.
⦁ they are also easy to transport especially when they have to be carried to the upper floors.
DISADVANTAGES
⦁ Plaster sometimes does not stick properly because of its smooth surface.
⦁ The production cost per unit for AAC block is higher .
RED BRICKS
Red brick is small block ,made of clay it is used in masonry construction material in creating different structure such as ,Building ,foundation,bridges ,flooring , external walls etc.
RAW MATERIAL
Red brick are made from a mixture of clay, sand , lime or magnesia etc.
ADVANTAGES
⦁ Very low maintenance cost is required.
⦁ Reusable and recyclable .
⦁ Compressive strength of brick is good
⦁ weight of Red brick is -----------3.5 to 4.00kg
first class brick
size - L - 9
H- 3
W-4.5 (inch)
⦁ water absorption of first class brick is 12 to 15 %
⦁ Red brick are used load bearing and non-load bearing walls.
⦁ 1 cum brick cost is lower (2700/in India )
DISADVANTAGES
⦁ Labour cost are very high.
⦁ rough surfaces of bricks may cause molds growth if it is not properly cleaned .
⦁ requires more mortar.
AAC Block
Autoclaved aerated concrete is light weight durable building product. AAC block is light weight and compare to the red bricks.
Raw material
It is manufactured through a reaction of aluminium powder and cement fly ash ,lime and sand etc.
ADVANTAGES
⦁ AAC block are light weight building material .
⦁ AAC block are very easy to handle and ordinary tools can be used for cutting. the AAC block are perfect in shape and size.
⦁ AAC block can be used to building both internal and external walls.
⦁ sound proof in nature .
⦁ less labour are required .the speed of work will be double than that of the brick work.
⦁ AAC block are recommended for high-rise building ,because it educed to total dead load .
⦁ require less mortar due to even surface & less number of joints.
⦁ AAC blocks masonry requires less curing , hence less water and less electricity are required .
⦁ 1 cum block work cost is (around INR 3150/ -in india )
⦁ steel saving up to 18% & concrete saving up to 9 %
⦁ The AAC Block have a compressive strength of an average 3 , 4.5 N/mm3 ( natural dry density 550-650 Kg/m3 )
⦁ AAC Block conduction of heat is high in comparison to clay and Brick.
⦁ they are also easy to transport especially when they have to be carried to the upper floors.
DISADVANTAGES
⦁ Plaster sometimes does not stick properly because of its smooth surface.
⦁ The production cost per unit for AAC block is higher .
RED BRICKS
Red brick is small block ,made of clay it is used in masonry construction material in creating different structure such as ,Building ,foundation,bridges ,flooring , external walls etc.
RAW MATERIAL
Red brick are made from a mixture of clay, sand , lime or magnesia etc.
ADVANTAGES
⦁ Very low maintenance cost is required.
⦁ Reusable and recyclable .
⦁ Compressive strength of brick is good
⦁ weight of Red brick is -----------3.5 to 4.00kg
first class brick
size - L - 9
H- 3
W-4.5 (inch)
⦁ water absorption of first class brick is 12 to 15 %
⦁ Red brick are used load bearing and non-load bearing walls.
⦁ 1 cum brick cost is lower (2700/in India )
DISADVANTAGES
⦁ Labour cost are very high.
⦁ rough surfaces of bricks may cause molds growth if it is not properly cleaned .
⦁ requires more mortar.
Sunday, March 29, 2020
BASIC KNOWLEDGE FOR CIVIL ENGINEER STUDENT OR FRESH CIVIL ENGINEER OR SUPERVISOR
BASIC KNOWLEDGE FOR CIVIL ENGINEER STUDENT OR FRESH CIVIL ENGINEER OR SUPERVISOR
Q 1 , What the step involved in Building Construction ?
Ans , there are different steps are involved in Building Construction like,
Q 2 , How to check level on construction site ?
Ans , I will check level on construction site by Leveling pipe,Dumpy level,Spirit level
Q3 , which is the equation used for calculating unit weight of steel bar ?
Ans ,
Q4 ,What is the size of concrete cube ?
Ans , 15 cm x 15 cm x 15 cm
Q5 , What is Unit weight of RCC?
Ans , 2500 kg/M3
Q6 , ONE square meter ----sq.ft ?
Ans 10.76 sa.ft
Q7, Which Test is conducted to determine the bearing capacity of Soil ?
Ans , Plate Load Test .
q8 , What does 33,43 and 53-grades of cement mean ?
Ans . 33,43,53 are characteristic compressive strength of Cement in N/mm2
Q9, Types of Load on structure ?
Ans , There are different type of load on structure
Q10 , What is DPC full form ?
Ans , Damp Proof Course
Q 1 , What the step involved in Building Construction ?
Ans , there are different steps are involved in Building Construction like,
- Concreting
- Masonry work
- Plastering work
- Flooring work
- Form work
- Steel cutting and bending
Q 2 , How to check level on construction site ?
Ans , I will check level on construction site by Leveling pipe,Dumpy level,Spirit level
Q3 , which is the equation used for calculating unit weight of steel bar ?
Ans ,
- In meter (D2/162)
- in feet (D2/533)
Q4 ,What is the size of concrete cube ?
Ans , 15 cm x 15 cm x 15 cm
Q5 , What is Unit weight of RCC?
Ans , 2500 kg/M3
Q6 , ONE square meter ----sq.ft ?
Ans 10.76 sa.ft
Q7, Which Test is conducted to determine the bearing capacity of Soil ?
Ans , Plate Load Test .
q8 , What does 33,43 and 53-grades of cement mean ?
Ans . 33,43,53 are characteristic compressive strength of Cement in N/mm2
Q9, Types of Load on structure ?
Ans , There are different type of load on structure
- Dead Load
- Live Load
- Wind Load
- Snow Load
- Seismic Load
Q10 , What is DPC full form ?
Ans , Damp Proof Course
Sunday, March 22, 2020
unit conversion
Unit Conversion
LINEAR MEASURE
12 inch 1 foot
3 feet 1 yard
10 mm 1 centimeter
10 centimeters 1 decimeter
10 decimeter 1 meter
10 meter 1 decameter
10 decameter 1 hectometer
10 hectometer 1 kilometer
100 cm 1 m
1 inch 8 soot
1 inch 25.4 mm
SQUARE MEASURE
144 square inches 1 square feet
9 square feet 1 square yard
100 sq.millimeter 1 sq.centimeter
100 sq.centimeter 1 sq.decimeter
100 sq.decimeter 1 sq.meter
100 sq.meter 1 sq.decameter
100 sq .decameter 1 sq.hectometer
100 sq.hectometer 1 sq.kilometer
CUBIC MEASURE
1 cubic meter 35.314
27 cubic feet 1 cubic yard
1728 cubic inch 1 cubic foot
1000 cu.millimeter 1 cu centimeter
1000 cu.centimeter 1 cu decimeter
1000 cu.decimeter 1 cu.meter
WEIGHTS
10 milligrams 1 centigram
10 centigrams 1 decigram
10 decigrams 1 gram
10 grams 1 decagram
10 decagrams 1 hectogram
10 hectogrames 1 kilogram
100 killogrames 1 quintal
10 quaintals 1 ton
liner measurement
1 kilometer 1000 meter
1 kilometer 0.62 mile
1 meter 100 centimeter
1 meter 3.28 feet
1 meter 1.093 yard
1 centimeter 10 milimeter
1 centimeter 0.393 inch
1 yard 3 feet
1 mile 5280 feet
1 meter 0.001 kilometer
1 centimeter 0.01 meter
1 foot 0.305 meter
1 yard 0.914 meter
1 millimeter 0.10 centimeter
1 inch 2.54 centimeter
1 feet 0.333 yard
1 foot 0.00019 mile
Thursday, March 12, 2020
convert killometer to feet or m2 to ft2
CONVERSION
Killometer TO FEET
Example ;-
convert 40 into feet ?
Sol;-
remember 1 km =3.281
and 1 km = 1000 meter
S0 1 km = 3.281 x 1000 =3281 feet
or 1 km= 3281feet
Now we know
40 KM = 40 x 3281 = 131240 feet
so 40 km = 131240 feet
Convert
m2 to ft2 (meter squre to squre feet)
Example;-
Lets convert 200 m2 into ft2
Sol;-
Remember 1 meter = 3.281 feet
so if we take square then 1 m2 =3.281ft2
finally
200 x 3.2812 = 2152.9922 ft2
200 m2 = 2152.9922 ft2
for vedio click here https://youtu.be/nineIqthrhM
Killometer TO FEET
Example ;-
convert 40 into feet ?
Sol;-
remember 1 km =3.281
and 1 km = 1000 meter
S0 1 km = 3.281 x 1000 =3281 feet
or 1 km= 3281feet
Now we know
40 KM = 40 x 3281 = 131240 feet
so 40 km = 131240 feet
Convert
m2 to ft2 (meter squre to squre feet)
Example;-
Lets convert 200 m2 into ft2
Sol;-
Remember 1 meter = 3.281 feet
so if we take square then 1 m2 =3.281ft2
finally
200 x 3.2812 = 2152.9922 ft2
200 m2 = 2152.9922 ft2
for vedio click here https://youtu.be/nineIqthrhM
Tuesday, March 10, 2020
15 very important interview question answer
INTERVIEW 15 IMPORTANT QUESTION ANSWER
Q1 ;- what is weight of first class brick ?
Ans;- 3.500kg
Q2;-How many days we can use cement from the production date ?
Ans ;- 3 months from production date
Q3;-What is least cover provide for different RCC member ?
Ans ;-
Footing 50mm
Raft foundation 50/70mm
beam strips 50 mm
Grade slab 20mm
Column 40mm
Shear wall 25mm
Slab 15mm
beam 25mm
Q4;-what is the difference betwwen one way slab or two way slab ?
Ans One Way Slab ;-
ratio of longer span /shorter span .>.2
Two Way Slab;-
ratio of longer span/shorter span <.2
Q5;-What are the type of foundation used in construction
Ans;-
Deep Foundation
Shallow Foundation
Q6;-What are the common methed of curing ?
Ans;-
Spraying
Wet covering of surface
Application of curing chemical
Steam curing
Q7;-Types of footing used in building construction ?
Ans;-
wall footing '
simple spread footing
stepped or pedestal footing
sloped footing
combined footing
strap footing
mat or raft foundation
pile foundation
drilled pier
Q8;-How to calculate steel weight ?
Ans ;-
in meter Dia x Dia / 162
in feet Dia x Dia / 533
Q9;-How many bricks are required in 1 meter cube ?
Ans;- 500 bricks are required in one meter cube
Q10;- What is DPC
Ans;- DPC is Damp Proof Course
Q11;-What do you under stand by m25 concrete
Ans ;-M stands for mix
and 25 is compressive strength N/MM2
ratio is 1 CEMENT, 1 SAND , 2 AGGRIGATE
Q12;- What is density of 1 cum cement ?
Ans ;-1440 kg /m3
Q13;- What are the weight of 8 mm,16 mm,12 mm,20 mm,25 mm dia of steel bar ?
Ans ;-
size in mm weight in kg per feet weight in kg per meter
6 0.067 0.220
8 0.120 0.395
10 0.188 0.617
12 0.270 0.885
16 0.480 1.578
20 0.751 2.466
25 1.174 3.852
32 1.925 6.313
Q14;- what is a bearing capacity of soil ?
Ans;- Bearing capacity is the capacity of soil to support the loads applied to the ground .the bearing capacity of soil is the maximum average contact pressure between the foundation and the soil which should not produce shear failure in the soil.
Q15;-What is the maximum curing time period
Ans;- The minimum period for curing concrete to attain maximum strength is 28 days .it is clear that concrete attains 50% of its design strength when it cured for 3-7 days .
Q1 ;- what is weight of first class brick ?
Ans;- 3.500kg
Q2;-How many days we can use cement from the production date ?
Ans ;- 3 months from production date
Q3;-What is least cover provide for different RCC member ?
Ans ;-
Footing 50mm
Raft foundation 50/70mm
beam strips 50 mm
Grade slab 20mm
Column 40mm
Shear wall 25mm
Slab 15mm
beam 25mm
Q4;-what is the difference betwwen one way slab or two way slab ?
Ans One Way Slab ;-
ratio of longer span /shorter span .>.2
Two Way Slab;-
ratio of longer span/shorter span <.2
Q5;-What are the type of foundation used in construction
Ans;-
Deep Foundation
Shallow Foundation
Q6;-What are the common methed of curing ?
Ans;-
Spraying
Wet covering of surface
Application of curing chemical
Steam curing
Q7;-Types of footing used in building construction ?
Ans;-
wall footing '
simple spread footing
stepped or pedestal footing
sloped footing
combined footing
strap footing
mat or raft foundation
pile foundation
drilled pier
Q8;-How to calculate steel weight ?
Ans ;-
in meter Dia x Dia / 162
in feet Dia x Dia / 533
Q9;-How many bricks are required in 1 meter cube ?
Ans;- 500 bricks are required in one meter cube
Q10;- What is DPC
Ans;- DPC is Damp Proof Course
Q11;-What do you under stand by m25 concrete
Ans ;-M stands for mix
and 25 is compressive strength N/MM2
ratio is 1 CEMENT, 1 SAND , 2 AGGRIGATE
Q12;- What is density of 1 cum cement ?
Ans ;-1440 kg /m3
Q13;- What are the weight of 8 mm,16 mm,12 mm,20 mm,25 mm dia of steel bar ?
Ans ;-
size in mm weight in kg per feet weight in kg per meter
6 0.067 0.220
8 0.120 0.395
10 0.188 0.617
12 0.270 0.885
16 0.480 1.578
20 0.751 2.466
25 1.174 3.852
32 1.925 6.313
Q14;- what is a bearing capacity of soil ?
Ans;- Bearing capacity is the capacity of soil to support the loads applied to the ground .the bearing capacity of soil is the maximum average contact pressure between the foundation and the soil which should not produce shear failure in the soil.
Q15;-What is the maximum curing time period
Ans;- The minimum period for curing concrete to attain maximum strength is 28 days .it is clear that concrete attains 50% of its design strength when it cured for 3-7 days .
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Saturday, March 7, 2020
cement and there types
CEMENT
Types of cement
1. Ordinary Portland Cement (OPC)
2. Portland Pozzolana Cement (PPC)
3. Quick Setting Cement
4. Rapid Hardening Cement
5. White Cement
6. Sulphate Resisting Cement
7. Low Heat Cement
8. High Alumina Cement
9. Coloured Cement
10. Hydrophobic Cement
11. Air Entraining Cement
Brif description of these cement types with their uses is given below
Ordinary Portland Cement (OPC)
in civil construction work ,ordniary portland cement( OPC)is wdely used
Use it isused in genral constraction purposes .(brickwork ,plastring )
Portland Pozzolana Cement (PPC)
In construction filed the portland pozzolana cement (pcc) arethe natural synthetic material ,pozzolana cement (fly ash volcanic ,ash,clay or silica fumes )
Use it is used in pr-steressed and post-tensioned concrete member and as it gives a better surface finish .
Quick Setting Cement
Quick setting cement is the cement which set are very shot time .initial setting time 5 minutes and final setting time is 30 minuts .
Use it is used in higher temprature where water evaportes easily .and the quick setting . cement are used in under water construction .
Rapid Hardning cement
rapid hardning cement are mostly used where rapid construction is needed like the construction of pavement .
white cement
white cement is quite similar to ordinary portland cement except for color amount of iron oxide and manganese oxide are low in white cement
use
white cement allow a wide range of decoarative options for production structural and architectural concrete, as well as mesonary and cement building products.
Sulphate resisting cement
Ordinary portland cement is sulphate to the attack of sulphate ,inparticular to the action of magnesium sulphate . in solution permeate into hardened concrete and and attack calcium hydroxiod ,hydrated calcium aluminate and even hydrated silicates.
use
sulphate resisting cement concrete to be used in marine condition.concrete to be used in the construction of sewage treatment works.
Low Heat Cement
it is well known that hyedration of cement is anexothermic action which produces large quantity of heat during hyedration .
use
low heat cement is used in the construction of gravity dams,retainig walls ,thick concrete section.
High Alumina Cement
sometime it is known as calcium aluminate cement is composed of calcium aluminates is manufactured from limestone or chalk and bauxite.one of the most advatages of high alumina cement concrete s the very high rate of strength development .
use
high alumina cement are used in refactory concretes where it requires more strength at very high temperature.
Coloured Cement
for manufacturing varius coloured cement either white cement or gray portland cement used as base .the use of cement as base is costly .with the use of grey cement only red or brown can be used
use
the coloured cement are widely used for finishing of floors,artificial marble.
Hydrophobic cement
hydrophobic cement is is obtained by grinding ordinary portland cement clinker with water replant film forming substance such as as oleic acid.
use
Hydraulic cement is a product used to stop water and leaks in concrete and masonary structures it type of cement similar to mortar,that sets extremely fast and hardness after it has been mixed with water.
Air Entraining Cement
Air entraining cement isto increase the durability of hardened concrete especially in climates subject to the freeze and second purpose is to increase workability of the concrete.
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Wednesday, January 29, 2020
how to calculate brick in wall
How to calculate Bricks in wall
.. Area of wall
hight 12'
width 4.5'' (in feet 0.375')
length 12'
Total volume 12 x 0.375 x 12
= 54 cubic feet
.. we know
one brick size is
hight 3''
length 9''
width 4.5''
we know that all brick volume is in inches so we convert in feet
we know in 1 feet =12 inch
so volume is
IN FEET
Hight =3/12 =0.25
length=9/12=0,75
width = 4.5/12 =0.375
so ,
volume foremula is
length x width x hight
= 0.75 x 0.375 x 0.25
= 0.070
we have find volume of one brick =0.070
so total bricks is = 54/0.070
= 771 bricks
but , this bricks are only for without mortar
with mortar = 771 -10%
=694.2 means 695 bricks are required for wall
.. Area of wall
hight 12'
width 4.5'' (in feet 0.375')
length 12'
Total volume 12 x 0.375 x 12
= 54 cubic feet
.. we know
one brick size is
hight 3''
length 9''
width 4.5''
we know that all brick volume is in inches so we convert in feet
we know in 1 feet =12 inch
so volume is
IN FEET
Hight =3/12 =0.25
length=9/12=0,75
width = 4.5/12 =0.375
so ,
volume foremula is
length x width x hight
= 0.75 x 0.375 x 0.25
= 0.070
we have find volume of one brick =0.070
so total bricks is = 54/0.070
= 771 bricks
but , this bricks are only for without mortar
with mortar = 771 -10%
=694.2 means 695 bricks are required for wall
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