What are the failure theories of RC elements subjected to state of bi-axial stress?

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

https://www.youtube.com/watch?v=WLEkC_JbTsQ

03 April 2017 1,301 2 View

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 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

Do you know best conditions for formation of best REE deposits?

I want to know more about REE deposits.

03 August 2024 6,930 2 View

What is the role of oxidative stress in toxin-induced carcinogenesis?

What is the role of oxidative stress in toxin-induced carcinogenesis? I am currently researching the impact of environmental toxins on children's health and would greatly appreciate insights from...

02 August 2024 3,174 1 View

What is the best conditions for formation of REE ore deposits?

I want to know more about REE deposits.

31 July 2024 7,366 1 View

What is the reason I get 400nm nanoparticles using an extruder with 200 nm membrane for cell membrane coating?

I am trying to coat my micelles and PLGA based nanoparticles with cell membrane using an Avanti mini extruder according to literature . I use 200nm membrane but my particles end up to be 400nm And...

30 July 2024 3,294 3 View

Could GSH level be more in CCL4 rats than negative control rats?

i compare between the antioxidant and oxidative stress level between negative control rats (saline) and CCL4 intoxicated rats. i found the level of GSH and TAC is more in toxic group than normal....

26 July 2024 1,887 0 View

Does it exist some special technique for cutting ceramic membranes for Cross-sectional FESEM images?

Does it exist some special technique for cutting ceramic membranes for Cross-sectional FESEM or SEM images?

25 July 2024 5,482 2 View

Can we eliminate the stress singularity at the tip of the crack by manipulating the elastic constants?

The aim of the research here is to prevent the propagation of the crack in the fabricated elastic medium with useful applications.

25 July 2024 9,976 3 View

How do nutrient transporters and aquaporins interact under abiotic stress in plants?

"The Correlation between Nutrition and Transport Mechanism under Abiotic Stress in Plants: A Comprehensive Review" by Muhammad Saleem, Jianhua Zhang, Muhammad Qasim, Rashid Iqbal, and Li Song,...

23 July 2024 9,109 0 View

Issues with Malaria Coated Nitrocellulose Membrane Releasing Moisture?

Hello, I am currently working with Malaria Pf/Pan nitrocellulose membranes coated for malaria detection. After drying the coated membranes in an Incubator (overnight at 37°C), I've noticed that...

16 July 2024 7,937 1 View