Is structure engineering troubling you?
Do you face problems in solving even the basic problems?
If yes then look no further as engineeringcivil.com along with Er. Gobind Khurana and Er. Abhimanyu has taken an initiative to help civil engineering students in structure related queries. We are thankful to Er. Gobind Khurana, Er. Abhimanyu and Vincent T. H. CHU for being a volunteer in helping other engineers in solving problems related to structure design in R.C.C and Steel.
Expert 1
Name – Er. Gobind Khurana
Qualification:
1. Bachelor of Civil Engineering From Thapar University Patiala
2. Master of Structure Engineering from Delhi University.
Work Profile: Currently working as Consultant for structural problems in R.C.C and STEEL Design.
Expert 2
Name – Er. Abhimanyu
Qualification:
Bachelor of Civil Engineering From Thapar University Patiala
Training at site in Unitech ( during 6 month summer training)
Work Profile : Presently working as associate design engineer for Fluor Daniel India Pvt Ltd. Area of work is structural steel design and concrete foundations for both static and dynamics analysis ( mainly in oil and gas industry)
Expert 3
Er. Vincent T. H. CHU obtained the degree of civil and structural engineering in the University of Hong Kong. He is the author of the monthly column “The Civil FAQ” in the Hong Kong Engineer published by the Hong Kong Institution of Engineers and is the author of the civil engineering monthly columns “The Civil Q&A” and “The Civil Corner” on the websites on World Federation of Engineering Organization and the University of Science and Technology (American Society of Civil Engineers – International Student Group) respectively. He is the recipient of the Ombudsman’s Award 2007 under complaint-related category and Young Engineer of the Year Award 2008 (Merit) organized by the Hong Kong Institution of Engineers. He is also the author of the engineering book “200 Question and Answers on Practical Civil Engineering Works”, “Civil Engineering Practical Notes A-Z” , “Ask Vincent Chu (Common FAQ on Practical Civil Engineering Works)” and “The Underlying Reasons in Practical Civil Engineering Works”.
So if you have any query regarding the concerned matter, just drop a comment and we will try to solve it as soon as possible.
how to wright a report for submission the resdintial buildings report in college. pls help me..?? and give me some refrence..
plsss… plsss
@ naveen
Report should contains the following items
1. Main cover page
2. index
3. drawings ( architectural and other drawings )
4. estimation ( bar bending etc )
5. construction details (From foundation layout up to finishing details)
6. field tests ( concrete mix, compressive test, slump test etc )
7. safety measures
8. planning and actual progress
9. design details ( only preliminary if available)
Hi sir,
Please provide me information about void ratio for soil and murum and suggest me book name
Thans & Regard
Umesh Rathod
Is it really possible to have “Zero Garbage Area” in Metropolitan city like mumbai, where people from all over the country and also from very backward family living in slums?
sir kindly tell me
As per the provisions of IS 456-2000, the (short term) modulus of elasticity of M25 grade concrete (in N/mm 2) can be assumed to be?
To Ananya
The modulus of elasticity of concrete E c adopted in modified form by the ACI Code can be calculated by the formula given below:
E = 4700 x square root of Fc
where Fc is 28-day compressive strength (MPa)
sir,
IS code and ACI code are diffrent or same??
@ ananya
no both are not same, one thing should kept in mind that codes generally contain information based on experimental data and each country has different experimental conditions and different material properties.
sometimes we consider 5700 instead of 4700…sir kindly tell me y?
To Ananya
Should be 4700.
in india it should be 5000sqrtfck
The specific gravity and insitu void ratio of a soil deposit are 2.71 and 0.85 respectively. The value of the critical hydraulic gradient is??and wat is the procedure to calculate it?
To Ananya,
At this critical condition the total drag upwards on the soils must exactly balance the submerged weight of this part of the sample. Hence, the fluidizing hydraulic gradient should be given by :
(specific gravity – 1)/(1 + void ratio )= 0.92
Sir
what will be the effect on 28 days strength of M25 grade concrete with slump value of 75 mm versis 175 mm
To manmohan raina
Though slump test is originally designed as a measure of workability, it turns out to be an indicator of excessive water content in fresh concrete only.
Slump test is not considered as a measure of workability because:
(i) There is no connection between the test results of slump test and workability;
(ii) The test results exhibit large random variations which is greater than that due to observed differences in workability;
(iii) Concrete of different workability may have the same slump.
In theory the slump value reflects more on the durability performance of the concrete rather than on strength.
i m in B.E.(pune university)
i hav presented my seminar last year on “Basalt Fiber Reinforced Concrete” with help of some websites.
i got interest in above, plz post me the websites regarding it & price of basalt fibers in INDIA.
Respected Sir,
i civi lengineer from mumbai.Today world we are constructing high rise sructures. I would like to know as to whether the RMC mfg or site developers /builders /structural engineer /architect do carry out Abrasive test on concrete.I personally feel that we are carrying out any test.What is the imapct on the structure if no abrasvie test is carried out.Do you feel the life of structure would be 12 years of 40 years.
Best Regards
Mahendra Parekh
I AM SENTIL I NEED THE WORK PROCEDURE FOR PLUMBING WORKS AND ALSO THE INSPECTION CHECKLIST FOR THE SAME PLS SEND ME THE AVAILABLE DATAS RELATED TO THE same
thanks & regards
sentil
I want to know the cement, aggregate & sand content in M20 RCC in cmt.
hi,sir iam in B.E please give new trent projet title…..
I would like to know the concrete mixing proportion. We are using 43 grade Zuari Cement. Our Engineer is planning for 3:11:12 (Cement : sand : aggregate) Is it correct? Any suggestions. If I used the proportion mentioned how would be the quality of building.
To SNK
While you do not provide water cement ratio, I could only comment on aggregate cement ratio.
For a fixed w/c ratio, an increase in the aggregate/cement ratio will decrease the fluidity and increase concrete strength.
how to calculate slab shuttering quantity, and batten planks,clamps
2. how to calculate concrete cost of 1m3
give me reply hurry
Sir, please help me to know how to calculate the proportions of cement,fine aggregate and coarse aggregate in a concrete mix .
To Mimi
It would take a whole day lecture to teach you the design of concrete mix. Please take up a concrete design handbook and it should tell you how to calculate the proportions of cement,fine aggregate and coarse aggregate in a concrete mix .
@ Mimi chakrabarty
refer M.L. gambhir book or M S shetty
Dear Mr. Vincent T. H. CHU,
First of all Hello Sir, I am Naveen Santolia and since last few months i had a question in my mind for the reduction of the curing period. As we see this period is 7 days normally but in India and i think the other countries also are not not able to do so.
And definitely this hampers the strength of the concrete. Can we reduce this period.
To Naveen,
The purpose of curing is to reduce the rate of heat loss of freshly placed
concrete to the atmosphere and to minimize the temperature gradient
across concrete cross section. Moreover, curing serves to reduce of the
loss water from freshly placed concrete to the atmosphere.
Based on past experimental results, curing also helps to increase concrete strength.
Hence, it is not advisible to reduce 7 day curing time.
Curing time can be reduced in summer. The period of curing depends on the temperature
because the rate of all chemical reactions is dependent on temperature.
Therefore, in summer the rate of reaction (hydration) is faster so that a
shorter curing time is required. On the contrary, in winter the rate of
reaction (hydration) is slower so that a longer curing time is required.
Hello Sir,
This seems to be a silly question but it cannot let me sleep sometimes. Sorry to ask but i wanted to ask this and please
dear Sirs, answer it.
Q. As we design the buildings/ bridges/ dams etc. means any Civil Engg. Structure for a specific design period means the designed structure will surely survive that much of period. But normally what happens, these structures survive more then the design life sometimes almost double life or more. So my question is that ” Is it not a wastage of our resources specifically money at the time of design and execution?”
To Naveen
In modern design, it is usually based on probability approach. Within design life, the structure has acceptable low risk of failure. Beyond design life, it doesn’t mean the structure must fail immediately. It only means that it has a higher risk of failure when compared with the risk within design life.
Sir,
How to get summer training for students of 3rd year in reputed organisation?
I’m using the Eurocode 1: Actions on structures
When I have a duopitch roofs. When do I use the Zone for wind direction ? = 0° and when for Zone for wind direction ? = 90°?
I need two factors. one is pressure and one is upload.
My roof is 10 degrees.
sir
i am a 3rd year student and i want to know to which side is should go??
weather for private sector or for IES?
can u tell me about the merits and demerits of both and what is my scope if i first work in public sector and then want to come in the private sector?
@ abhishek
If u preparing for ies, i think u can easily clear any PSU, but personally IES is better if u able to get in railways, cpwd and mes.
sir, i wish to do ms in construction management.what are best unvesities offering thiscourse in US and UK
I want quantity of cement , Aggregate , Sand In Kg/M3 in below grade
M-10
M-15
M-20
M-25
M-30
M-40
M 45
For each concrete design mix, it has to go through the following process:
Step 1. Set a target mean compressive strength, fm
Step 2. Obtain required material information, including availability of materials (what kind of aggregate and cement available), sieve analysis of both coarse and fine aggregate, BD, UW and MC of aggregate, and maximum size of aggregate.
Step 3. Determine the w/c ratio
Step 4. Specify the slump value. Usually, slump values of the concrete to be designed will be specified according to the job nature of the concrete construction. Determine free water content.
Step 6 The cement content can then be calculated by dividing the water content by w/c ratio.
Step 7. The total aggregate content is then obtained by estimating the wet density of the fully compacted mix
Step 8. Determine the proportion of sand. The proportion of fine aggregate to total aggregate depends on the grading of the sand and maximum aggregate size, the workability and w/c ratio.
Hence, there is no definite answer for quantity of cement , Aggregate , Sand In Kg/M3 for each grade of concrete. It depends on the requirements of workability, durability and others.