MCQ in🌍🌋 Earthquake engineering 🌋Part 2

 Welcome back friends, Part 2

             As we all know that all the building structures are rest on Earth. For the safety and stability of the structure we need to have some knowledge about Earth and seismology. 

               Because of that I am here giving mcq questions and answers related to Earth science and seismograph. 👇👇👇 Before starting to this Part I will suggest you Go from part 1 

https://engineerpravinkadam.blogspot.com/2021/04/earth-science-for-civil-engineering-1.html

 1. Which of the following is the suitable location for the construction of dams in a folded terrain?

(A) Crest of the fold

(B) Trough of the fold

(C) Limbs of the fold

(D) None of these

2. Most suitable rocks for construction of tunneling:

(A) Argillaceous S.st

(B) Vesicular or amygdaloidal basalts

(C) Limestone

(D) Schist & Phyllite

3. Tunneling _____________ to the fold axis is not at all desirable.

(A) Perpendicular

(B) Parallel

(C) None of these

4. Tsunami waves are generated with the earthquake. True or false.

(A) False

(B) True

(C) None of these

5. Which is the largest subduction earthquake?

(A)1960 Chile earthquake 

(B) 1905 Kangra earthquake

(C) 2011 Tohuku earthquake

(D)2004 Sumatra-Andaman earthquake

6. What is the rupture length of 2004 Sumatra-Andaman earthquake?

(A) 500 km

(B) 5000 km

(C) 1200 km

(D) None of these

7. What is the subsidence occurred at Great Nicobar Island due to 2004 Sumatra-Andaman earthquake?

(A) 5 m

(B) 3 m

(C) 10 m

(D) None of these

8. Abrupt uplift and gentle subsidence are indicative of:

(A) Hat microatoll

(B) Hemispherical coral head

(C) Cup microatoll 

(D) Cylindrical coral head

9. Driving force can be increased by:

(A) Decrease in amount of material on slope

(B) Increase in slope angle

(C) Decrease in slope angle

(D) None of these

 10. Which of the following is not depends on shear strength of the material?

(A) Cohesion

(B) Internal friction

(C) Normal stress

(D) Mass of the material

11. Which one of the following is not an internal factor affects in slope processes?

(A) Lithology of the materials on the slope

(B) Ground water or rain water (run off)

(C) Geological Structures

(D) Earthquakes (Tectonic activity)

12. In translational slides, movement _______ to planes of weakness and occasionally _____to slope.

(A) Parallel, parallel

(B) Parallel, perpendicular

(C) Perpendicular, parallel

(D) Perpendicular, perpendicular

13. ________are defined as free falling fragments of rocks from steep cliff or slope.

(A) Rockfalls 

(B) Toppling 

(C) Debris avalanche

(D) Earthflow

14. Subsidence results due to the constant or excess removal of ground water deplete the water table and 

increases the area of ____________.

(A) Water table

(B) Ground surface

(C) Zone of saturation

(D) Vadose zone

15. Which of the following is not one of the channel pattern?

(A) Braided

(B) Narrow

(C) Meandering

(D) Straight

16. Terraces are remnants of former:

(A) Rivers

(B) Alluvial fans

(C) Floodplains

(D) None of these

17. What type of drainage pattern would you expect to find where the main streams are parallel and very long and the edge of the folded sedimentary rock (weak and resistant) forms long parallel belts?

(A) Dendritic

(B) Rectangular

(C) Radial

(D) Trellised

18. Which of the following is not one of the three broad types of channel pattern? 

(A) Straight

(B) Serrated

(C) Braided

(D) Meandering

19. The volume rate of flow of water at a point in a given time is:

(A) Competence

(B) Viscosity

(C) Discharge

(D) Capacity

20. From which of the following factor has not influence the drainage density:

(A) Climate

(B) Topography

(C) Soil infiltration capacity

(D) Anthropogenic activity

(E) Vegetation 

(F) Geology

👍🌍🌋🌍🌋🌍🌋🌍

If you liked this blog and want to learn more from me. To get notifications on your mail of my upcoming blog follow me using Blue button from left side of blog.

Keywords# civil engineering # seismology # earth # earthquake # fault # science#

Source of information NPTEL

🏠How to protect the building from chemical and environmental attack?🏗

 Welcome back friends, 

          If one question is blinking in your mind that is "Even after great technologies and experts are available Special care is being taken during construction activity then "why the structures get deteriorate?"

        If this question is blinking in your mind then you are on the right way of thinking as an  engineer and quality construction seeker.

       Most of the structural elements in the  vorious type of Construction activity loose their Strength due to environmental & chemical and environmental factors. In Simple word "Chemical and environmental attacks". 

Now you will ask How'?

         We all know that due to Industrialization various industries produces  huge amount of waste in the Gas, liquid and Solid form. This waste directly and  indirectly present in our environment and here the actual Chemical & environmental attack Starts.

         So many process are involved in the process of chemical attack but I will explain here basic concept of chemical attack that is crystalization.

         Chemicals like sulfate present in environment enter into concrete from pores or voids present in the surface of concrete and this chemical entrapped into internal voids .

         As the time passes this entrapped chemical starts preparing Crystal and this Crystal then develop pressure internally on concrete. As a result we see the cracks on the concrete and this process not happen only in concrete but also in various construction materials by the means of various chemicals and by various ways.

        In advance construction practice construction professionals use various surface treatment like chemical coating on surface of building elements to avoid this future unseen Risk of cracking in the structure.

      As a effective solution of this Chemical and environmental attack. We will discuss here about  Solvent based Coal epoxy Coating system.

It is popularly known as AC-DUR-CT ('s) 

It is two Component Solvent based Coal tar epoxy system. 

For details about this company 👇👇

http://www.Applechemie.com

It is Specially designed Coating having judicious blend of high quality. resin and inert fillers. It is recomended for protection of interior & exterior wooden, Concrete and metal surfaces from environmental and chemical attactk.

A detailed discussion we will do in 2nd part of this blog in which you will get all the details of this epoxy coating system and AC-DUR-CT (S).

Keywords # civil engineering# environment# chemical # attack# science # building # Protection # quality construction #

I am waiting for your response in comment box also follow me to get latest blogs easily...