Cement | Introduction | Construction Materials | Part I | Engineer Ji

Introduction to Cement | Civil Engineering | Part I 

• Cement is a material which has cohesive and adhesive properties in the presence of water.
• Cement is a product obtained by pulverizing clinker formed by calcinating raw-materials primarily consisting of Lime (CaO), Silicate (SiO₂), Alumina (Al₂O₃) and Iron oxide (Fe₂O₃).
• It was invented by Joseph Aspdin of UK in 1824. He named it Portland Cement because

Exercise 1-A | Explanation's | Questions based on SSD | Highway Engineering

Important points:

• If reaction time (t) is not given assume t = 2.5sec (as per Indian Standard).
• Value of ‘ g’ always = 9.81
• Friction co-efficient for varuious design speed:

Speed =	<20	40	50	60	65	80	>100
f =	.40	.38	.37	.36	.36	.35	.35

• Breaking Distance for Downhill or down Grade = (-x%)
• Breaking Distance for Uphill or up grade = (+x%)
• SSD for various lane & way are given as below:

Type of traffic	1-lane, 1-way	1-way, 2-way	2-lane, 2-way
SSD required		2xSSD	SSD

AutoCAD Commands | Shortcuts | AutoCAD Tutorials

Helwo Friends, 

Nowadays, AutoCAD is must for an Civil Engineers in Private sectors. So, We are introducing the AutoCAD Tutorials step by step for Civil Engineers in which you can learn all about AutoCAD without any CAD center & any Fee. We will provide Free & deep knowledge about ACAD & our Explanation "fundaa" is based on Engineer Ji's knowledge. 

Exercise 1-A | Highway Engineering | Numerical Based on SSD

Exercise 1-A Highway Engineering | Engineer Ji | Highway Engineering Numerical's 

TIME: 5min/Question (Max)                                       Maximum Marks 5 x 10 

            

1)  Calculate the SSD for design speed of 60kmph for 2-lane, 2-way traffic.

• A 16.67m
• B 79.95m
• C 41.67m
• D 38.27m

2) Calculate minimum SSD to avoid had on collision of 2 cars approaching from opposite direction at a speed of 90kmph & 60kmph.

[assume t = 2.5sec]

• A 16.67m
• B 153.51m
• C 82.14m
• D 235.65m

SSC JE Civil Complete Study Material | Engineer Ji

1. Surveying Vol. I 

Complete study material for free!

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Detailed Syllabi for Diploma in Civil Engineering by | Engineer Ji

Detailed Syllabus for Diploma in Civil Engineering | SSC JE CIVIL | RRB | DMRC | Etc. | By Engineer Ji 

मध्यकालीन भारत | Medieval India | Post 1A

भारत पर मुस्लिम आक्रमण | Muslim Invasion in India

i). मोहम्मद बिन कासिम | Mohammad~bin~Qasim

• भारत पर आक्रमण करने वाला प्रथम अरब मुस्लिम था, जिसने सिंध व मुल्तान को जीत लिया था। 
• उस समय सिंध का शासक ब्राह्मण वंशी राजा दाहिर था। 
• भारत पर प्रथम तुर्क आक्रमण 986 ई में महमूद गजनी के शासक सुबुक्त्गीन ये किया।