Computer Part I | Short Revision Section

Computer | SRS | Part I 

• चार्ल्स बेवेज को कम्प्यूटर का पितामह कहा जाता हैं।
• आधुनिक क्म्प्यूटर की खोज सर्वप्रथम 1946ईं में हुई।
• 2 दिसम्बर कम्प्यूटर साक्षरता दिवस के रूप में मनाया जाता हैं।
• भारत में नई कम्प्यूटर नीति की घोषणा नवम्बर 1984ई में की गई थी।
• भारात में निर्मित प्रथम कम्प्यूटर सिध्दार्थ हैं। इसका निर्माण इलेक्ट्रोनिक कार्पोरेशन ओफ इण्डिया ने किया था।
• भारत में प्रथम कम्प्यूटर 16, अगस्त 1986 ई को बंगलुरू के प्रधान डाकघर में लगाया गया था।
• भारत का प्रथम कम्प्यूट्रीकृत डाकघर नई दिल्ली का है।
• भारत की सिलिकन घाटी बंग्लुरू में हैं।

National & International Days | Important Dates | Miscellaneous

राष्ट्रीय व अंतर्राष्ट्रीय दिवस | Engineer Ji 

जनवरी | January 

10	विश्व हास्य दिवस
12	राष्ट्रीय युवा दिवस । स्वामी विवेकानंद जन्मदिवस
15	आर्मी दिवस
30	कुष्ठ निवारण दिवस
24	राष्ट्रीय कन्या दिवस
25	राष्ट्रीय पर्यटन दिवस
26	भारतीय गणतंत्र दिवस
30	शहीद दिवस

Sky Bridge | Langkawi, Malaysia | Discoveries | Engineer Ji

Design & Construction:

• The bridge is 125 meters long, and 1.8 meters wide (the middle section has a wider walkway), with two steel railings as well as steel wire mesh on either sides. It is designed as a curved walkway to maximise the viewing experience, providing shifting perspective as a visitor walks along the bridge. The walkway, formed of steel and concrete panels set on top of an inverted triangular truss, connects two hilltops at Gunung Mat Chinchang. The first 25m of the bridge is straight, following 3 curved 25m sections, then a final straight 25m section. 

Plastic Roads | Plastic Pavement Pros & Cons | Buzz Mate | Engineer Ji

Plastic Roads | INDIA

• Plastic roads are roads made either entirely of plastic or of composites of plastic with other materials. 
• Plastic roads are different from standard roads in the respect that standard roads are made from asphalt concrete, which consists of mineral aggregates and asphalt. 

Introduction to Rails | Railway Engineering | Part I

Rails:     

• The rails on the track can be considered as steel girders for the purpose of carrying axle load.
• Rails transfer Axle load to the sub-grade through sleepers and ballast.
• Rails convert the moving wheel load of train into point load which acts on the sleepers.
• Rails are made up of high carbon steel, to resist wear and tear.
• On points and crossing rails of medium carbon and high manganese steel is used.
• In India rails are

Haryana Staff Selection Commission | Recruitment 2017 | JOB MATE

Haryana Staff Selection Commission | Recruitment for Diploma Holders:

Diploma in Civil Engineering Jobs | JOB MATE | ENGINEER Ji 

Advertisement No. 07/2017

Haryana Staff Selection Commission (HSSC) Panchkula invites Online applications for direct recruitment of Workshop Calculation & Engineering Drawing Instructor and Junior Engineer. The Online registration start from 1st August 2017 and close on 30th August 2017.

Online Application Forms: 21/AUG/2017

Age Limit: 17-42
Pay Scale: FPL-6 ₹ 35400 - 112400 (Pre revised ₹ 9300 - 34800 + GP ₹ 3600) for all above posts.

Chemical Composition of Raw Materials | Construction Materials | Cement | Part II

Chemical Composition of Raw Materials | CEMENT

CEMENT | Civil Engineering | Engineer Ji | Er. Neeraj Gosain

• The three basic constituents of hydraulic cements are Lime, Silica-alumina and Iron-oxide.
• The relative proportions of these oxide compositions are responsible for influencing the various properties of cement.
• An increase in lime content beyond a certain value makes it difficult to combine completely with other compounds.
• Consequently, free lime will exist in the clinker and will result in the unsound cement. An increase in silica content at the expense of alumina and ferric -oxide makes the cement difficult to fuse and form clinker.
• The approximate limits of chemical composition in cement are given in table.

Constituents of Portland cement (Raw Material)

Oxide	Function	Composition (%)	Average
Lime, CaO	Controls strength & soundness. Its deficiency reduces