What is the reason of collapse of water tank shown in the attached you tube?

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Which type of multiple-cell box girder is better, cells connected by top flanges or cells connected both by top and bottom flanges?

How we can design box girder bridge?

02 March 2017 10,163 3 View

Why do BS8007 specify the allowable crack width of water retaining structure as 0.2mm for severe or very severe exposure?

Why 0.2 mm crack width?

02 March 2017 9,354 3 View

What is the effect of rusting on steel reinforcement?

How does rust affect on the bonding between steel bars and concret?

02 March 2017 3,458 10 View

In “High strength concrete” in buildings, 56 or 91-day compression test results are sometimes adopted instead of 28-day compression test results. Why?

In normal concrete structures, 28-day test results are often adopted.However, in the construction of high-rise buildings using “High strengthconcrete”, compressive strengths based on 56 or 91-day...

02 March 2017 8,839 19 View

What is the difference between working stress approach and limit state approach?

What about difference between those approaches regarding load and material safety factor?

02 March 2017 587 2 View

In carrying out compression test for concrete, should test cubes or test cylinders be adopted?

Relation between cubes and cylinder

02 March 2017 5,836 4 View

If concrete compression test fails, should Schmidt hammer test be adopted as an alternative test to prove the concrete strength?

Non destructive tests

02 March 2017 5,452 31 View

It is not necessary to design nominal reinforcement to piles. Is it true?

Can we use same code provisions of columns for piles?

02 March 2017 7,906 3 View

Can a concrete structure be completely free of expansion joints and contraction joints?

Assume that there is no differential settlement.

02 March 2017 7,651 3 View

What is the difference between no-fines concrete, lightweight concrete and lean concrete?

what is difference between these types of concrete?

02 March 2017 8,560 5 View

What is the reason for current dropping in OER , LSV curve?

I tried four trials of the same Copper Phosphides sample in Alkaline medium ( 0.5M KOH) with Hg/HgO reference electrode and Pt as counter electrode. I used 0.001 V/s scan rate for first three...

10 August 2024 3,629 1 View

What may be the reasons for failures of Tube toi Tube Sheet Joints in Boiler Drum ?

We have observed that tube to tube sheet joint leaked in our boiler and needs to overcome same by knowing the root cause.

08 August 2024 3,161 0 View

What is the problem with these tissue culture plants?

All plants are green but some of these plants becomes yellow. I did not found any reason. Please help me to find out the real problem.

01 August 2024 589 4 View

Reason for discontinuities in my Band structure?

Hey All! I am wondering what might be wrong with my band structure. I did the calculations using VASP and plotted the results using Origin. Although I have tried changing various input...

25 July 2024 2,920 11 View

Is it fare for editors of reputed Journals to put on hold manuscripts more than six months without review updates, Are they harassing researchers?

It is being seen that Editors of some reputed Journals are putting on hold the manuscripts and not updating review states even passing more than six months from submission. Researchers are...

24 July 2024 8,596 2 View

Has anyone tried freeze flow samples in -80C freezer or liquid nitrogen before processing?

Our lab has some radioactive cell samples that need to be kept frozen for at least 30 days before flow analysis. For some reason, the samples stored in liquid nitrogen did not perform as well as...

15 July 2024 9,975 1 View

My Cyclic voltammetry curve doesn't show cathodic peak of Cu2+ to Cu+. how to solve this problem?

I performed CV of Cu-MOF in a buffer solution of pH 8, and we did not find any peak corresponding to Cu2+ to Cu+. What is the reason behind this? Please give your valuable suggestions.

08 July 2024 2,388 4 View

Hello, I’m growing three species of microalgae under heterotrophic and mixotrophic conditions. Both the two turned yellow?

What could be the reason for mixotrophs to be yellow too instead of green? Thank you

08 July 2024 594 2 View

What are possible reasons for having the repeated wavy patter in Raman spectrum?

I'm currently analyzing the Raman spectra of coloured plastic samples and have encountered a wavy, oscillating pattern in the spectra of some coloured samples. I was wondering what the possible...

04 July 2024 1,949 4 View

Which river basin has lowest total replenishable groundwater resources &utilization of irrigation potential created lags behind potential created why?

Which river basin has the lowest total replenishable groundwater resources and utilization of irrigation potential created lags behind the potential created what are the reasons?

03 July 2024 9,638 0 View