๐แแ แฎแญแญแ แจแแซแณแญ แฒแแญแ แแแแแฃแต 21 แแแณแต แจแแแ แต แตแฅแ แฐแ
แจแแ แฎแญแญ แจแฐแแ แจแแซแณแญ แ แแตแฐแ แฒแแญแ แแแแแฃแต 21 แแแณแตแ แจแแแ แต แญแ แฐแแจแฐแแ แ แแ แ แซแ แตแจ แแ แแแแแญแซ แแแแข
แแตแซแ แฅแแ แ แฅแ แ แแตแฐแ แจแฅแแจแต แแ แแต แจแฐแ แแ แฒแแ แ แแณแซ แแตแฅแ แจ1 แแแฎแ แ แแญ แจแแแ แจแแ แฎแญแญ แ แแปแแฝ แจแฐแซแฐแฑแ แต แจแจแฐแแแ แตแญแญแแ แแฝแณ แจแแซแณแญ แแแข
แญแ แจแจแฐแแแ แแณแซ แญแแแ แจแฐแฃแแ แฒแแญแ 15 แแตแญ แญแแแต แซแแ แฒแแ 9 แแตแญ แตแแต แ แแแข
แ แแตแก แจแฐแแญ แ แแต แ แแแแฝ แฅแตแจ แแฐแ แ แจแแแญแซ แ แแปแแฝแแ แ แซแถ แญแแแข
แญแ แแ แจแฐแซแ แฃแแแซ แฅแแ แจแแญแณแแ แจแแ แจ แขแแแ แตแซแแ แ แแ แ แซแ แแ แซแแซ แ แแ แ แฅแแแฝ แแแต แแแแแญแซ แแ แจแฅแ แฐแแฝ แแแต แ แตแแแต แ แแแทแแข
Via EBC
@etconp
แจแแ แฎแญแญ แจแฐแแ แจแแซแณแญ แ แแตแฐแ แฒแแญแ แแแแแฃแต 21 แแแณแตแ แจแแแ แต แญแ แฐแแจแฐแแ แ แแ แ แซแ แตแจ แแ แแแแแญแซ แแแแข
แแตแซแ แฅแแ แ แฅแ แ แแตแฐแ แจแฅแแจแต แแ แแต แจแฐแ แแ แฒแแ แ แแณแซ แแตแฅแ แจ1 แแแฎแ แ แแญ แจแแแ แจแแ แฎแญแญ แ แแปแแฝ แจแฐแซแฐแฑแ แต แจแจแฐแแแ แตแญแญแแ แแฝแณ แจแแซแณแญ แแแข
แญแ แจแจแฐแแแ แแณแซ แญแแแ แจแฐแฃแแ แฒแแญแ 15 แแตแญ แญแแแต แซแแ แฒแแ 9 แแตแญ แตแแต แ แแแข
แ แแตแก แจแฐแแญ แ แแต แ แแแแฝ แฅแตแจ แแฐแ แ แจแแแญแซ แ แแปแแฝแแ แ แซแถ แญแแแข
แญแ แแ แจแฐแซแ แฃแแแซ แฅแแ แจแแญแณแแ แจแแ แจ แขแแแ แตแซแแ แ แแ แ แซแ แแ แซแแซ แ แแ แ แฅแแแฝ แแแต แแแแแญแซ แแ แจแฅแ แฐแแฝ แแแต แ แตแแแต แ แแแทแแข
Via EBC
@etconp
โค17๐5
๐ INTERCON Construction Chemicals
โ Concrete Admixtures
โ Bonding Agents
โ Waterproofings
โ Wall Putty, Prime Coat
โ Concrete Repair Mortar
โ Floor hardener, Epoxy
โ Grout, Self-level mortar
โ Quartz paint, Contextra
โ Tile Adhesive & Tile Joint Fillers
โ Geotextiles and other construction chemicals and materials
Tel: 0961955555
Address: Signal, around signal mall
โ Concrete Admixtures
โ Bonding Agents
โ Waterproofings
โ Wall Putty, Prime Coat
โ Concrete Repair Mortar
โ Floor hardener, Epoxy
โ Grout, Self-level mortar
โ Quartz paint, Contextra
โ Tile Adhesive & Tile Joint Fillers
โ Geotextiles and other construction chemicals and materials
Tel: 0961955555
Address: Signal, around signal mall
๐3โค2
แณแแซแต แแแต แฅแ แแฆแแต แ แ
แซแข
๐แแแตแ แแฆแแต แ แแแแต แ แญแแต แจแฐแแแ แ แแ
โง แแแ แ แ แแต แฆแณ แแแแ แ แญแฅ
๐แขแตแฎแตแซ แแตแฅ แจแตแ แฅแแแญแแณแแ
โง แญแฐแแแแ แซแแญแฉแ
0904040477
0994941708
๐แแแตแ แแฆแแต แ แแแแต แ แญแแต แจแฐแแแ แ แแ
โง แแแ แ แ แแต แฆแณ แแแแ แ แญแฅ
๐แขแตแฎแตแซ แแตแฅ แจแตแ แฅแแแญแแณแแ
โง แญแฐแแแแ แซแแญแฉแ
0904040477
0994941708
โค8
๐WHY FRESH CONCRETE CRACKS ON THE NEXT DAY AFTER POURING
๐ซThe Main reasons Behind Early Concrete Cracks
โ Plastic Shrinkage
โบFresh concrete is like wet clayโif it dries too quickly, it shrinks and cracks. This is called plastic shrinkage cracking, and it happens when the surface loses moisture faster than the concrete can harden. Hot, windy, or dry weather speeds up evaporation, leaving behind spiderweb-like cracks or even deeper splits.
โ Too Much Water in the Mix
โบItโs tempting to add extra water to make concrete easier to pour, but this is a major mistake. Excess water weakens the mix and increases shrinkage as it dries, leading to cracks.
โ Poor Subgrade Preparation
โบFor ground supported Concrete structures as it needs a solid, well-compacted base. If the ground underneath is soft, uneven, or poorly drained, the concrete structure will settle and crack.
โ Missing Control Joints
โบConcrete will crackโitโs a fact. But without control joints, cracks appear randomly and can worsen over time.
โ Pouring in Extreme Weather
โบHot weather causes rapid drying and cracking.
Cold weather can freeze the mix before it cures, leading to weak, crumbly concrete.
๐ซCracks allow water
โบpenetration, leading to rebar corrosion, concrete spalling, and reduced load capacity. In critical structures, small cracks can grow into major failures requiring expensive repairs.
โก๏ธSo be cautious and ensure a proper curing, jointing, and mix design.
@etconp
๐ซThe Main reasons Behind Early Concrete Cracks
โ Plastic Shrinkage
โบFresh concrete is like wet clayโif it dries too quickly, it shrinks and cracks. This is called plastic shrinkage cracking, and it happens when the surface loses moisture faster than the concrete can harden. Hot, windy, or dry weather speeds up evaporation, leaving behind spiderweb-like cracks or even deeper splits.
โ Too Much Water in the Mix
โบItโs tempting to add extra water to make concrete easier to pour, but this is a major mistake. Excess water weakens the mix and increases shrinkage as it dries, leading to cracks.
โ Poor Subgrade Preparation
โบFor ground supported Concrete structures as it needs a solid, well-compacted base. If the ground underneath is soft, uneven, or poorly drained, the concrete structure will settle and crack.
โ Missing Control Joints
โบConcrete will crackโitโs a fact. But without control joints, cracks appear randomly and can worsen over time.
โ Pouring in Extreme Weather
โบHot weather causes rapid drying and cracking.
Cold weather can freeze the mix before it cures, leading to weak, crumbly concrete.
๐ซCracks allow water
โบpenetration, leading to rebar corrosion, concrete spalling, and reduced load capacity. In critical structures, small cracks can grow into major failures requiring expensive repairs.
โก๏ธSo be cautious and ensure a proper curing, jointing, and mix design.
@etconp
โค12๐4
๐How BIM Enhances Construction Site Safety
๐ซBuilding Information Modeling (BIM) is transforming construction site safety by shifting from reactive responses to proactive prevention.
โ Proactive Hazard Identification
BIM enables the creation of detailed 3D models that simulate construction processes, allowing teams to identify and mitigate potential hazards before they occur on-site. This proactive approach reduces the likelihood of accidents and enhances overall safety planning.
โ Improved Communication and Coordination
By providing a centralized platform for all project stakeholders, BIM ensures that everyone has access to up-to-date information. This transparency fosters better communication, reduces misunderstandings, and ensures that safety protocols are consistently applied across the board.
โ Enhanced Training and Preparedness
BIM's visual simulations serve as effective training tools, allowing workers to familiarize themselves with the construction environment and potential risks in a virtual setting. This preparation leads to increased awareness and adherence to safety measures on the actual site.
โ Real-Time Monitoring and Risk Management
Integrating BIM with technologies like sensors and wearable devices facilitates real-time monitoring of site conditions and worker movements. This integration allows for immediate identification of safety breaches and swift corrective actions, thereby minimizing risks.
โ Cultivating a Safety-First Culture
The comprehensive data and insights provided by BIM encourage a culture that prioritizes safety. Continuous feedback loops and data analysis help in refining safety protocols and fostering an environment where safety is an integral part of the construction process.
By integrating BIM into construction projects, companies can significantly enhance site safety, reduce accidents, and promote a culture of proactive risk management.
In the context of our countries rapidly growing construction sector, As projects expand across the country, the need for safer, smarter, and more collaborative planning is urgent. So Implementing BIM can empower construction firms to foresee risks, enhance site coordination, and foster a culture of safety from the ground up.
What do you think? Itโs time to move beyond traditional methods and embrace BIM as a powerful ally for a safer, more resilient construction industry in our country.
@etconp
๐ซBuilding Information Modeling (BIM) is transforming construction site safety by shifting from reactive responses to proactive prevention.
โ Proactive Hazard Identification
BIM enables the creation of detailed 3D models that simulate construction processes, allowing teams to identify and mitigate potential hazards before they occur on-site. This proactive approach reduces the likelihood of accidents and enhances overall safety planning.
โ Improved Communication and Coordination
By providing a centralized platform for all project stakeholders, BIM ensures that everyone has access to up-to-date information. This transparency fosters better communication, reduces misunderstandings, and ensures that safety protocols are consistently applied across the board.
โ Enhanced Training and Preparedness
BIM's visual simulations serve as effective training tools, allowing workers to familiarize themselves with the construction environment and potential risks in a virtual setting. This preparation leads to increased awareness and adherence to safety measures on the actual site.
โ Real-Time Monitoring and Risk Management
Integrating BIM with technologies like sensors and wearable devices facilitates real-time monitoring of site conditions and worker movements. This integration allows for immediate identification of safety breaches and swift corrective actions, thereby minimizing risks.
โ Cultivating a Safety-First Culture
The comprehensive data and insights provided by BIM encourage a culture that prioritizes safety. Continuous feedback loops and data analysis help in refining safety protocols and fostering an environment where safety is an integral part of the construction process.
By integrating BIM into construction projects, companies can significantly enhance site safety, reduce accidents, and promote a culture of proactive risk management.
In the context of our countries rapidly growing construction sector, As projects expand across the country, the need for safer, smarter, and more collaborative planning is urgent. So Implementing BIM can empower construction firms to foresee risks, enhance site coordination, and foster a culture of safety from the ground up.
What do you think? Itโs time to move beyond traditional methods and embrace BIM as a powerful ally for a safer, more resilient construction industry in our country.
@etconp
โค10๐4๐1
Ethio Construction Engineering
๐แ แตแฐแณแฝ แแ แแแ
แปแแ แคแฐแฐแฆแฝ ๐ซแจ "Quantity Surveying" Full Course แฆแแแญแ แแญ แ แ แแญแ แแแ แแแญ แจแแตแแแ แฐแแชแแฝ แฅแ แจ แฎแแตแตแซแญแฝแ แฃแแแซแแฝ แฃแแฐแ แแญ แ แฐแแฃแฃแ แแ แแฅแแต แฐแแชแแฝ แแแแฃ แแแจแแ ๐ฅ แญแ
แตแแ แ แแ แแ แตแแ
แญแถแฝแ แซแซแตแณแ? ๐ซTakeoff sheet ๐ซBill of Quantity(BOQ) ๐ซPayment Certificateโฆ
๐ทแแแแฃ แจแญแฐแแ๐
๐ซแ "Quantity Surveying" Full Course แ แฆแแแญแ แแแแญ แจแฐแแแแฃแน แ แแ แแฌ แแณ แ แแต แฐแแต แญแแต แญแแแซแโค
๐ฉแแ แแ แแจแ @Philemona7 แแญแ 0925446661 แญแฐแแ
@etconp
๐ซแ "Quantity Surveying" Full Course แ แฆแแแญแ แแแแญ แจแฐแแแแฃแน แ แแ แแฌ แแณ แ แแต แฐแแต แญแแต แญแแแซแโค
๐ฉแแ แแ แแจแ @Philemona7 แแญแ 0925446661 แญแฐแแ
@etconp
โค8
Ethio Construction Engineering
๐Types of Structures in Construction ๐งEvery structure in construction whether itโs a bridge, roof, wall, or slab has one main purpose, to carry loads safely. ๐ฒBut what many overlook is that each structure carries these loads differently, depending on theโฆ
Continued...
๐งCore and Outrigger Systems:
โบFor tall buildings above 30 stories, traditional frame systems become less efficient in resisting lateral movement. Core and outrigger systems resolve this by combining a central reinforced concrete core (housing elevators and services) with horizontal outrigger trusses or beams that connect to outer perimeter columns. This configuration significantly enhances the buildingโs stiffness and limits lateral sway, improving comfort for occupants and structural safety during windstorms or earthquakes. It is a go-to system for modern skyscrapers.
๐งTruss Systems
โบTrusses are frameworks made of straight members arranged in interconnected triangles, which efficiently distribute loads through axial tension and compression. They are widely used for spanning large distances in bridges, warehouses, airplane hangars, and auditoriums. Trusses can be made from steel, timber, or aluminum, depending on the application. Their fabrication can be done off-site and assembled on-site, which improves construction speed and quality control.
๐งArch Systems
โบArch systems rely on compression to carry loads along a curved path to the supports. Historically used in Roman aqueducts and cathedrals, arches remain relevant today in bridges, tunnels, and even decorative elements. On-site, formwork and support for arches require skilled labor, but the resulting structure is elegant and structurally efficient. The key design consideration is the horizontal thrust, which must be resisted by abutments or tension ties.
๐งShell Structures
โบShell structures are thin, curved surfacesโlike domes or hyperbolic paraboloidsโthat carry loads in multiple directions.
โบThey achieve high strength with minimal material thickness, making them economical and visually striking.
โบThese are used in water tanks, stadiums, airport terminals, and religious buildings.
โบAlthough challenging to design and construct, their strength-to-weight ratio is exceptional. Construction often requires advanced formwork and precise concreting techniques.
๐งSpace Frames
โบSpace frames are three-dimensional frameworks made of interconnected struts arranged in a geometric pattern. They offer excellent rigidity and can span large areas with few supports. Common in airports, exhibition halls, and stadium roofs, space frames are usually fabricated off-site and assembled using bolt or weld connections. The modular design allows for flexibility in architectural expression and efficient load distribution.
๐งSuspension and Cable-Stayed Systems
โบSuspension structures use cables hanging from tall towers to support the load belowโclassic examples include long-span bridges and some stadium roofs. In cable-stayed systems, cables run directly from the towers to the deck, offering more stiffness and reduced cable length. These systems are visually appealing and structurally efficient but require precise engineering and tensioning. They are ideal for large spans where conventional supports are not feasible.
โญ๏ธEach structural system serves a distinct purpose depending on the buildingโs height, function, location, and material availability. From the solid simplicity of load-bearing walls to the innovative geometry of space frames and the dramatic reach of cable-stayed bridges, structural systems are the backbone of construction.
@etconp
๐งCore and Outrigger Systems:
โบFor tall buildings above 30 stories, traditional frame systems become less efficient in resisting lateral movement. Core and outrigger systems resolve this by combining a central reinforced concrete core (housing elevators and services) with horizontal outrigger trusses or beams that connect to outer perimeter columns. This configuration significantly enhances the buildingโs stiffness and limits lateral sway, improving comfort for occupants and structural safety during windstorms or earthquakes. It is a go-to system for modern skyscrapers.
๐งTruss Systems
โบTrusses are frameworks made of straight members arranged in interconnected triangles, which efficiently distribute loads through axial tension and compression. They are widely used for spanning large distances in bridges, warehouses, airplane hangars, and auditoriums. Trusses can be made from steel, timber, or aluminum, depending on the application. Their fabrication can be done off-site and assembled on-site, which improves construction speed and quality control.
๐งArch Systems
โบArch systems rely on compression to carry loads along a curved path to the supports. Historically used in Roman aqueducts and cathedrals, arches remain relevant today in bridges, tunnels, and even decorative elements. On-site, formwork and support for arches require skilled labor, but the resulting structure is elegant and structurally efficient. The key design consideration is the horizontal thrust, which must be resisted by abutments or tension ties.
๐งShell Structures
โบShell structures are thin, curved surfacesโlike domes or hyperbolic paraboloidsโthat carry loads in multiple directions.
โบThey achieve high strength with minimal material thickness, making them economical and visually striking.
โบThese are used in water tanks, stadiums, airport terminals, and religious buildings.
โบAlthough challenging to design and construct, their strength-to-weight ratio is exceptional. Construction often requires advanced formwork and precise concreting techniques.
๐งSpace Frames
โบSpace frames are three-dimensional frameworks made of interconnected struts arranged in a geometric pattern. They offer excellent rigidity and can span large areas with few supports. Common in airports, exhibition halls, and stadium roofs, space frames are usually fabricated off-site and assembled using bolt or weld connections. The modular design allows for flexibility in architectural expression and efficient load distribution.
๐งSuspension and Cable-Stayed Systems
โบSuspension structures use cables hanging from tall towers to support the load belowโclassic examples include long-span bridges and some stadium roofs. In cable-stayed systems, cables run directly from the towers to the deck, offering more stiffness and reduced cable length. These systems are visually appealing and structurally efficient but require precise engineering and tensioning. They are ideal for large spans where conventional supports are not feasible.
โญ๏ธEach structural system serves a distinct purpose depending on the buildingโs height, function, location, and material availability. From the solid simplicity of load-bearing walls to the innovative geometry of space frames and the dramatic reach of cable-stayed bridges, structural systems are the backbone of construction.
@etconp
โค16
Which design philosophy uses multiple safety
factor format?
factor format?
Anonymous Quiz
35%
(a) Ultimate stress method
18%
(b) Working stress method
35%
(c) Limit state method
11%
(d) Load resistance method
โค6
If the sensitivity of a soil is between 4 and 8,
then it will be called as :
then it will be called as :
Anonymous Quiz
15%
(a) Insensitive soil
25%
(b) Less sensitive soil
45%
(c) Sensitive soil
15%
(d) Extra sensitive soil
โค12
The most accurate method of determining the
water content in a sample of soil is:
water content in a sample of soil is:
Anonymous Quiz
14%
(a) Sand bath method
8%
(b) Calcium carbide method
75%
(c) Oven drying method
2%
(d) Alcohol method
โค11
The ratio of a given volume change in a soil,
expressed as percentage of the dry volume, to
the corresponding change in water content is called
expressed as percentage of the dry volume, to
the corresponding change in water content is called
Anonymous Quiz
31%
(a) Specific gravity of soil solids
13%
(b) Mass-specific gravity of soils
40%
(c) Shrinkage ratio of soils
15%
(d) Density ratio of soils
โค7๐2
By approximate method, the computation of Ncomponent at the time of sudden drawdown
condition, the weight is considered as:-
condition, the weight is considered as:-
Anonymous Quiz
20%
(a) Dry unit weight
31%
(b) Saturated unit weight
22%
(c) Bulk unit weight
27%
(d) Submerged unit weight
๐9โค2๐2
5.Calculate the theoretical weight of a steel bar of length 8 m and diameter 20 mm. Take density of steel as 7850 kg/mยณ.
Anonymous Quiz
59%
19.27
15%
15.58
16%
17.77
11%
12.56
โค11๐4
9.In the design of RCC structures, the limit state of collapse deals with
Anonymous Quiz
74%
the strength of the strcture under the maximum design load
15%
Discomfort Caused By excessive Deflection
6%
Leakage of water in the strcture
6%
Loss of Durability
๐14
11. Identify the behaviour study of soils in which the zero air void unit weight is found.
Anonymous Quiz
8%
shear strentgh test
16%
permeability test
56%
Compaction test
20%
Consolidation test
๐11โค3๐ฅฐ1
12. Which of the following constant factore relates stress in the steel linearly with stress in adjoining concrete?
Anonymous Quiz
24%
Poissions ratio
39%
youngs modulus
22%
Shear modulus
15%
modular Ratio
๐8โค4
15. A reinforced concrete retaining structure that provides skeletal support to earthen materials is called
Anonymous Quiz
43%
Backfill
4%
Erosion
49%
Laterl pressure
4%
Plasticity
๐8๐ญ2
16. The standard consistency test of cement is conducted by using
Anonymous Quiz
25%
Casagrandes apparatus
16%
Blaines permeability apparatus
27%
Le Chateliers apparatus
32%
Vicats apparatus
โค4