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Department of Civil Engineering International Scholarships

  As of November 25, 2024, several scholarships are available for civil engineering students and professionals. Below is a curated list of opportunities, including eligibility criteria and application deadlines: 1. QUEST Undergraduate Scholarship by the Institution of Civil Engineers (ICE) Eligibility: Students planning to start a civil engineering degree in the UK in autumn 2024. The course must be accredited by ICE. Benefits: Up to £8,000 over the course of study, paid work placements every summer, and potential for full-time employment with leading civil engineering companies upon graduation. Application Deadline: Specific deadlines may vary; please refer to the official website for the most current information. More Information: QUEST Undergraduate Scholarship 2. Engineering the Future Scholarships at The University of Manchester Eligibility: International students holding an offer from the Department of Mechanical, Aerospace and Civil Engineering for postgraduate taught studie...

Types of concrete defects ,cuases and preventation

 Concrete defects can significantly affect the performance, durability, and aesthetics of a structure. Below is a list of common types of defects, their causes, and prevention methods: 1. Cracking Causes: Shrinkage during curing. Thermal expansion and contraction. Overloading or structural movement. Improper mix proportions or insufficient curing. Rapid drying or exposure to extreme temperatures. Prevention: Use proper mix design with appropriate water-cement ratio. Apply adequate curing methods (e.g., keeping concrete moist). Install joints to accommodate thermal movement. Avoid overloading during construction. Use admixtures to reduce shrinkage. 2 Honeycombing Causes: Inadequate compaction or vibration. Insufficient fines in the mix. Congested reinforcement leading to poor flow of concrete. Use of poorly graded aggregates. Prevention: Ensure proper compaction and vibration during pouring. Use well-graded aggregates and an appropriate mix design. Design reinforcement to allow free...

What Is Splicing of Reinforcement Bars?,Rebar Formula and Brief Example

 What Is Splicing of Reinforcement Bars? 🏷Splicing of reinforcement bars, commonly known as rebars, refers to the process of connecting two or more rebars in a reinforced concrete structure to ensure a continuous and load-resistant structure. 🚧It is a critical practice in construction to transfer the stresses from one bar to another effectively, maintaining structural integrity. 💫Methods of Splicing Reinforcement Bars There are three primary methods of splicing reinforcement bars: ❇️1. Lap Splice A lap splice is the most widely used method in reinforced concrete structures. In this technique, two rebars are overlapped and tied together using binding wires. The overlap length, also known as the lap length, is crucial for ensuring the splice’s strength. ⏺It is determined based on factors such as: • The diameter of the rebars. • The grade of concrete. • The specific application of the structure. ▶️The lap splice is easy to implement and cost-effective but may require additional con...

What we face technical problem when we build dam? and how to solve those technical problem?

  Building a dam is a complex engineering project that presents numerous technical challenges. Here’s an overview of the common technical problems and potential solutions: 1. Site Selection and Geological Issues Problem: Poor geological conditions, such as weak or fractured rock, soil instability, or seismic activity, can compromise the dam's foundation. Flooding risks during construction in valleys or rivers. Solutions: Conduct detailed geotechnical surveys to evaluate the suitability of the site. Choose locations with stable rock formations. Use techniques like grouting to stabilize weak foundations. Divert rivers temporarily using cofferdams or tunnels to manage water flow during construction. 2. Structural Integrity and Material Failures Problem: Materials may fail under pressure, leading to cracks or structural weaknesses. Improper design for water pressure, sediment loads, and thermal stress. Solutions: Use high-quality materials and advanced construction techniques. Employ c...

What is Self compacted concrete &Casting procedure ?

  Self compacted concrete Self-Compacted Concrete (SCC), also known as Self-Consolidating Concrete, is a highly flowable, non-segregating concrete that spreads into place and fills formwork without the need for mechanical vibration. It is designed to achieve excellent filling ability, high passing ability through reinforcements, and resistance to segregation. Key Characteristics: 1. High Workability: SCC flows easily under its own weight, making it suitable for complex and densely reinforced structures. 2. No Vibration Required: Eliminates the need for external or internal vibration during placement. 3. Homogeneous Composition: Resists segregation and maintains a uniform mix throughout. Advantages: Improved Construction Speed: Reduces labor and time by eliminating vibration. Better Surface Finish: Produces smoother and defect-free surfaces. Reduced Noise Pollution: Minimizes the noise from vibration equipment. Enhanced Durability: Ensures better compaction, reducing voids and incre...

General Question about Surveying and Levelling Part 2

  Question No. 41 Which of the following statements is incorrect? (A) Error due to refraction may not be completely eliminated by reciprocal levelling (B) Tilting levels are commonly used for precision work (C) The last reading of levelling is always a foresight (D) All of the above statements are incorrect Answer: Option D Question No. 42 In levelling operation, (A) The first sight on any change point is a back sight (B) The second sight on any change point is a fore sight (C) The line commences with a fore sight and closes with a back sight (D) The line commences with a back sight and closes with a foresight Answer: Option D Question No. 43 The length of a traverse leg may be obtained by multiplying the latitude and (A) Secant of its reduced bearing (B) Sine of its reduced bearing (C) Cosine of its reduced bearing (D) Tangent of its reduced bearing Answer: Option A Question No. 44 While working on a plane table, the correct rule is: (A) Draw continuous line...

General Questions About Serving and Levelling part 1

 Question No. 01 To avoid large centering error with very short legs, observations are generally made (A) To chain pins (B) By using optical system for centering the theodolite (C) To a target fixed on theodolite tripod on which theodolite may be fitted easily (D) All the above Answer: Option C Question No. 02 Different grades are joined together by a (A) Compound curve (B) Transition curve (C) Reverse curve (D) Vertical curve Answer: Option D Question No. 03 Which of the following methods of theodolite traversing is suitable for locating the details which are far away from transit stations? (A) Measuring angle and distance from one transit station (B) Measuring angles to the point from at least two stations (C) Measuring angle at one station and distance from other (D) Measuring distance from two points on traverse line Answer: Option B Question No. 04 The line of collimation method of reduction of levels, does not provide a check on (A) Intermediate sights (B) Fore sights (C) Ba...

#4 Basic Factors Why Concentrate Cracks?

  WHAT IS CONCRETE : Concrete is a building material which made from mixture of cement , sand ,crush or gravel and water. and we poured this mixture in the form work which can give us the different shapes of element like stone which is too mush strong. WHY CONCRETE CRACKS : 1: Excess of water in concrete 2: Improper Compaction of concrete 3: Rapid drying of concrete 4: Temperature Variation 1: EXCESS OF WATER IN CONCRETE Concrete does not required much water to get maximum strength . we required limit water in concrete to achieve the maximum strength of concrete . when we increase the water in concrete so it can lose the strength , so therefore concrete can crack. water is just reducing in concrete to make workabality of concrete . so increasing of water can reduce the strength of concrete. 2: IMPROPER COMPACTION OF CONCRETE before placing concrete we have to proper compact the soil. and after that when we placed concrete so concrete should be compacted properly . when the con...

Good Quality of Aggregate for Concentrate

                    Table Contents 1 Soundneas 2 Wear Resistance 3 Alkali Aggregate Reaction 4 Other Alkali aggregate reactions 5 Alkali Silica Reactions 6 IMPURITIES PROPERTIES OF AGGREGATES The property of aggregates are mentioned below. 1. SOUNDNESS Rocks that undergo volume changes due to wetting and drying are . However, aggregate is susceptible to volume change during freezing and thawing cycles. Freezing can cause internal stresses to build up as water inside the aggregate freezes and expands. A critical size can be calculated below which freeze-thaw stress is not a problem; however, for most rock it is greater than normal sizes. 2. WEAR RESISTANCE A good aggregate will be hard, dense, strong, and free of porous material. The abrasion resistance of aggregate can be tested by the Los Angeles abrasion test; however, this test does not match well with concrete wear in the field. 3...

What Are The Types Of Building?

  ☞Depending upon the character of occupancy or the type of use, building can be classified into different categories as follows: 1. RESIDENTIAL BUILDINGS : These buildings include one or two private dwellings, apartment houses (flats), hotels, dormitories etc. 2. EDUCATIONAL BUILDINGS : These buildings include any building used for school, college or day care purposes involving assembly for instruction, education or recreation. 3 . INSTITUTIONAL BUILDINGS : These buildings include any building or part which is used for medical treatment etc. Such as Hospitals, nursing homes, orphanages, sanatoria, jails, prisons, mental hospitals etc. 4. ASSEMBLY BUILDINGS : These buildings may include any building or part of a building where a group of people gathers for recreation, amusement, social, religious or such types of purposes such as theaters, assembly halls, exhibition halls, restaurants, museum, club rooms, auditoria etc. 5. BUSINESS BUILDINGS : These shall includ...

Singularity Function

  Singularity functions.

#10 POINTS SHOULD BE REMEMBER CIVIL ENGINEER ON SITE:

   10 POINTS SHOULD BE REMEMBER CIVIL ENGINEER ON SITE 1: Check size of bars for slab beam and column etc. 2: Length of bar for any steel which we use for construction works. 3: Position of bars. 4: Count No’s of steel bars 5: Check lap length of steel. 6: Check concrete cover for steel reinforcement. 7: Spacing of bar for beam column and slab etc. 8: Direction of bars 9: Check over all dimension of beam and slab. 10: Check beam and slab lever before starting concrete work

Prestressed Concrete Final Part

 Tendon Layout Tendons can have the following type of arrangement on plan Distributed - distributed (common in MIddle east and Australia) Tendons in the x and y directions are distributed over the length of the slab with a spacing not exceeding 1.5m. The issue with this arrangement is the tendon will be like a basket wieve and it’s difficult to know which one goes up and which one goes down. Banded - distributed (common in US) This will have the same distributed tendon as part 1 but one direction will be banded (usually grouped in a width 1-1.2m). No max spacing requirements for banded tendons Very easy to install as all the banded will be install first then the distributed Banded - banded Not very common Note: the horizontal spacing between tendons doesn’t affect the structures a lot, the most important thing is the tendon profiles (measured vertically) Economy of PT system PT slabs will commonly have up-to 30% less thickness, and complet...

PRESTRESSED CONCRETE PART 5

 Myth associated with PT we cannot make an opening in PT slab, this is actually a false statement, a PT slab can be modified with proper calculations and expertise. We have made as big as 4m x5m opening in a PT slab which was required for sky light or escalators we need to do restressing periodically: this is also one of the things I hear about PT, but this is wrong. The strands are cut flush with the concrete surface and can not be restressed even if we wanted to. There is no requirements for restressing as we have low relaxation strands and a very good wedge anchor system PT slab can not crack: even though PT slabs are designed to be crack free at service load (at least based on ACI, some codes like EC allow for a certain degree of crack), cracks can be witnessed in PT slabs. This can attribute to one of the two 1. If the actual load exceeds the service load momentary 2. Surface cracks, which are very common No one can claim to have a crack free concrete by definition, we w...

PRESTRESSED CONCRETE PART 4

  Definition of terms Strand: is the high tension cable (typically more than 4 times the strength of rebar) Tendon: agroup of strands (can be one for unbonded but it’s multiple strands inside a duct for bonded system) Duct: a galvanized or HDPE that separates the concrete from the strand Issues associated with PT Restrain to shortening: this needs a special consideration for pouring sequence and connection detailing Relaxation of strand: this can be avoided with a use of low relaxation strands Design of Post tension members The design of post tension elements needs a sound engineering knowledge and field skill, the amount of force applied to a single strand with a diameter of 12.7mm is about 15Ton (this is more than the weight of 7 Toyota Corollas). One can imagine how dangerous it can get if either the design or site execution are not properly done. That’s why all countries (at least the countries I am aware of) requires a specialized contractor who can do...

PRESTRESSED CONCRETE PART 3

 Bonded PT Stress transfer is through bond (require cement grouting) strain compatibility between strand and concrete Very common in Australia, Middle East, and Europe Unbonded PT stress transfer is through anchorage no grouting required no strain compatibility strand and concrete moves independently Very common in North America Mono strand system strands in tendon are stressed separately usually 1, 3 or 5 strands per tendon Used in slabs or beams Multi strand system strands in a tendon are stressed at the same time (16, 19, as much as 37 strands per tendon) Used in bridges, and in buildings (transfer beams) PT structures are used in slab on grade (for houses in expansive soil) Mat foundation (raft) parking structures flat plate bridges (Girder type, cable stay, suspension) silos water tanks walls (currently becoming common for shear walls in seismic areas)