Civil Engineering Basics

👉Properties of Concrete 1️⃣ What is Concrete? Concrete is a composite material made of: - Cement (binder) - Aggregates (fine and coarse) - Water - Admixtures (optional) 2️⃣ Important Properties of Concrete: - Workability: Ease of mixing, placing, and finishing. - Strength: Ability to resist loads — mainly compressive strength. - Durability: Ability to withstand weathering, chemical attack, abrasion. - Shrinkage: Volume reduction during drying. - Creep: Long-term deformation under sustained load. 3️⃣ Grades of Concrete (IS 456:2000 Standard Example): - M20 → 20 MPa strength (commonly used for residential buildings) - M30, M40, M50 → Higher strength for infrastructure, bridges, high-rise. 4️⃣ Factors Affecting Concrete Strength: - Water-cement ratio (lower ratio = higher strength) - Quality of materials - Curing methods - Mixing procedures 5️⃣ Curing of Concrete: - Maintains moisture for proper strength gain. - Methods: Water curing, steam curing, curing compounds.

👉Delay, Disruption, and Acceleration Concepts The Society of Construction Law (SCL) Delay and Disruption Protocol, 2nd Edition (2017), provides guidance on delay, disruption, and acceleration concepts. *Definition of Disruption* Disruption refers to the disturbance, hindrance, or interruption to a Contractor's normal working methods, resulting in lower productivity or efficiency in the execution of particular work activities. *Effects of Disruption* Disruption can lead to: • Activity delay • The need for acceleration to avoid activity delay • A combination of both, resulting in loss and expense Disruption is concerned with an analysis of the productivity of work activities, irrespective of whether those activities are on the critical path to completion of the works. *Disruption Claims* A disruption claim ought to be supported by some form of disruption analysis. Delay and disruption are inherently interrelated, and a disruption analysis may support a critical delay claim in addition to a delay analysis. *Relationship Between Delay and Disruption* Delay and disruption are closely associated concepts. A loss of productivity (i.e., disruption) can lead to delay, and if the impacted activities are on the critical path, that can be critical delay. Conversely, delay can lead to disruption. *Acceleration and Mitigation* Acceleration refers to the situation where additional costs are incurred to seek to overcome all or part of delay or disruption. Mitigation means to make less severe or lessen delay, disruption, and/or the resultant costs and/or loss. *Claims for Delay, Disruption, and Acceleration* For all delay, disruption, and acceleration claims, the claim document must explain the legal basis for entitlement, whether that is under the contract or at law. The claim document must also explain the cause of the delay, disruption, and/or acceleration and the remedies claimed.

many parts on NGAT exams from different topics has released. join the channel with the link snd make your preparation go well. https://youtube.com/playlist?list=PLGJgYWQsqx64lLARQ58-zKg9O8Acn3nwF&si=bEov2GuvbmfQK_1A

many parts on NGAT exams from different topics has released. join the channel with the link snd make your preparation go well. https://youtube.com/playlist?list=PLGJgYWQsqx64lLARQ58-zKg9O8Acn3nwF&si=bEov2GuvbmfQK_1A

🎓 ለተመራቂ ተማሪዎች በሙሉ የቀረበ ጥሪ! የ Exit Exam ስጋትዎ እዚህ ጋር ያበቃል! 🎓 የዩኒቨርሲቲ መውጫ ፈተና (Exit Exam) ጊዜው እየደረሰ ነው? ዝግጅትዎስ ምን ደረጃ ላይ ይገኛል? በፈተና ወቅት የሚፈጠረውን ጭንቀት እና ግራ መጋባት ለማስቀረት ET UNIVERSITY EXIT EXAM በከፍተኛ ጥራት እና በዘመናዊ አቀራረብ ተዘጋጅቶ በቅርቡ ወደ ስራ ሊገባ መሆኑን ስናበስር በታላቅ ደስታ ነው! ✨ ይህ መድረክ ተማሪዎች በራሳቸው ዲፓርትመንት ላይ የሚያተኩሩ የጥያቄ ባንኮችን፣ የሞዴል ፈተናዎችን እና ራስን መመዘኛ ሲስተሞችን በማካተት የላቀ ውጤት እንዲያስመዘግቡ ታስቦ የተዘጋጀ ነው። 🛑 የእርስዎ ተሳትፎ ወሳኝ ነው! 🛑 ስራችንን ስንጀምር ቅድሚያ የትኞቹን ዲፓርትመንቶች እናካትት? የእናንተን ፍላጎት መሰረት አድርገን የመጀመሪያውን ምዕራፍ ለመክፈት ዝግጅታችንን አጠናቅቀናል። ምን ማድረግ አለብዎት? 1️⃣ ጥያቂዎቹ በዩቱብ ስለሚለቀቁ ከዩቱብ ቻናላችንን https://youtube.com/@myh12?si=K50AF8Mw3foX1Ort በመጫን subscribe በማድረግ ይቀላቀሉ። 2️⃣ የዲፓርትመንትዎን ስም በግሩፑ ላይ ይጻፉልን። 3️⃣ ብዙ ተማሪዎች የጠየቁት ዲፓርትመንት ቅድሚያ ተሰጥቶት ወደ ስራ ይገባል! ስለዚህ አሁኑኑ ለጓደኞችዎ እና ለክላስ ሜቶችዎ ያጋሩ! የዲፓርትመንታችሁ ተማሪዎች በብዛት በጠየቁ ቁጥር ቅድሚያ የማግኘት ዕድላችሁ የሰፋ ይሆናል። 🔗 አሁኑኑ ይቀላቀሉን፦ 👉 የዩቱብ ቻናል: https://youtube.com/@myh12?si=K50AF8Mw3foX1Ort ለተመረጠ ስኬት፣ ለላቀ ውጤት! 🚀🎓

To get GAT, SAT, Grade 12 entrance exams, Exit Exams, and different international Exams solved please join the youtube channel https://youtube.com/@myh12?si=1FTwwybSDHrXEBea

#NGAT የ2018 ዓ.ም አጋማሽ ዓመት (2ኛው ዙር) ብሔራዊ የድኅረ-ምረቃ መግቢያ ፈተና (NGAT) ረቡዕ የካቲት 04/2018 ዓ.ም ይሰጣል። የድኅረ-ምረቃ ፕሮግራም የመግቢያ ፈተናውን ለመውሰድ አመልካቾች ምዝገባ ሲያደርጉ መቆየታቸው ይታወቃል፡፡ ምዝገባው አሁን ላይ የተጠናቀቀ ሲሆን፤ አመልካቾች ለፈተናው በቂ ዝግጅት እንዲያደርጉ ይጠበቃል፡፡ ክፍል-12 ላይ አሪፍ አሪፍ ጥያቄዎች ስለተለቀቁ ገብታችሁ ማየት ትችላላችሁ፡፡ ለመግባት በ https://youtu.be/gS8cuI5xFPk?si=cB9uhkRiRinS4oAY መግባት ትችላላችሁ፡፡

#NGAT የ2018 ዓ.ም አጋማሽ ዓመት (2ኛው ዙር) ብሔራዊ የድኅረ-ምረቃ መግቢያ ፈተና (NGAT) ረቡዕ የካቲት 04/2018 ዓ.ም ይሰጣል። የድኅረ-ምረቃ ፕሮግራም የመግቢያ ፈተናውን ለመውሰድ አመልካቾች ምዝገባ ሲያደርጉ መቆየታቸው ይታወቃል፡፡ ምዝገባው አሁን ላይ የተጠናቀቀ ሲሆን፤ አመልካቾች ለፈተናው በቂ ዝግጅት እንዲያደርጉ ይጠበቃል፡፡ ክፍል-12 ላይ አሪፍ አሪፍ ጥያቄዎች ስለተለቀቁ ገብታችሁ ማየት ትችላላችሁ፡፡ ለመግባት በ https://youtu.be/3fY-M5iBO28?si=t2LtBXIQZwLs7mNi መግባት ትችላላችሁ፡፡

https://vt.tiktok.com/ZSapHxF5p/

#Notice‼️ #NGAT የNGAT ምዝገባ ተጠናቋል‼️ የመፈተና Username እና Password በተመዘገባችሁበት Dashboard የሚላክላችሁ ይሆናል በትዕግስት ጠብቁ! ሌላው ለፈተናው በደንብ ተዘጋጁ:: YOUTUBE ለሚቀናችሁም ደግሞ በርካታ ጥያቄዎች አሉን በሚከተለው Link ገብታችሁ ማንበብ ትችላላችሁ👇 https://youtu.be/YnC-Y9EFYmc?si=zS-8Ijwj38TlxxFZ

ክፍል-8 ላይ አሪፍ አሪፍ ጥያቄዎች ስለተለቀቁ ገብታችሁ ማየት ትችላላችሁ፡፡ ለመግባት በhttps://youtu.be/YnC-Y9EFYmc?si=zS-8Ijwj38TlxxFZ መግባት ትችላላችሁ፡፡

ክፍል-7 ላይ አሪፍ አሪፍ ጥያቄዎች ስለተለቀቁ ገብታችሁ ማየት ትችላላችሁ፡፡ ለመግባት በhttps://youtu.be/fZkuOoBqys8 መግባት ትችላላችሁ፡፡

https://youtu.be/Kh_Z_OXYZDs

This video explains NGAT Exam Math 2026 with repeated questions and clear step-by-step solutions for Ethiopian students. to watch the video go yto youtube with this link. https://youtu.be/p5SP1_K-sSc

https://youtu.be/hzeWrnkwB8M