⏳ 𝗨𝗻𝗱𝗲𝗿𝘀𝘁𝗮𝗻𝗱𝗶𝗻𝗴 𝗮𝗻𝗱 𝗠𝗶𝘁𝗶𝗴𝗮𝘁𝗶𝗻𝗴 𝗖𝗼𝗻𝘀𝘁𝗿𝘂𝗰𝘁𝗶𝗼𝗻 𝗗𝗲𝗹𝗮𝘆𝘀 🏗

𝖢𝗈𝗇𝗌𝗍𝗋𝗎𝖼𝗍𝗂𝗈𝗇 𝖽𝖾𝗅𝖺𝗒𝗌 𝖺𝗋𝖾 𝗈𝗇𝖾 𝗈𝖿 𝗍𝗁𝖾 𝗆𝗈𝗌𝗍 𝗌𝗂𝗀𝗇𝗂𝖿𝗂𝖼𝖺𝗇𝗍 𝖼𝗁𝖺𝗅𝗅𝖾𝗇𝗀𝖾𝗌 𝗂𝗇 𝗍𝗁𝖾 𝗂𝗇𝖽𝗎𝗌𝗍𝗋𝗒, 𝗂𝗆𝗉𝖺𝖼𝗍𝗂𝗇𝗀 𝗍𝗂𝗆𝖾𝗅𝗂𝗇𝖾𝗌, 𝖻𝗎𝖽𝗀𝖾𝗍𝗌, 𝖺𝗇𝖽 𝗉𝗋𝗈𝗃𝖾𝖼𝗍 𝗈𝗎𝗍𝖼𝗈𝗆𝖾𝗌. 𝖧𝖾𝗋𝖾’𝗌 𝖺 𝗅𝗈𝗈𝗄 𝖺𝗍 𝗌𝗈𝗆𝖾 𝖼𝗈𝗆𝗆𝗈𝗇 𝖼𝖺𝗎𝗌𝖾𝗌 𝖺𝗇𝖽 𝗌𝗍𝗋𝖺𝗍𝖾𝗀𝗂𝖾𝗌 𝗍𝗈 𝗆𝗂𝗍𝗂𝗀𝖺𝗍𝖾 𝖽𝖾𝗅𝖺𝗒𝗌:

𝐂𝐨𝐦𝐦𝐨𝐧 𝐂𝐚𝐮𝐬𝐞𝐬 𝐨𝐟 𝐂𝐨𝐧𝐬𝐭𝐫𝐮𝐜𝐭𝐢𝐨𝐧 𝐃𝐞𝐥𝐚𝐲𝐬:

1). 𝑷𝒐𝒐𝒓 𝑷𝒍𝒂𝒏𝒏𝒊𝒏𝒈 𝒂𝒏𝒅 𝑺𝒄𝒉𝒆𝒅𝒖𝒍𝒊𝒏𝒈: Inaccurate timelines and resource allocation can lead to unforeseen delays.

2). 𝑫𝒆𝒔𝒊𝒈𝒏 𝑪𝒉𝒂𝒏𝒈𝒆𝒔: Late-stage design alterations or scope changes can disrupt the project flow.

3). 𝑼𝒏𝒇𝒐𝒓𝒆𝒔𝒆𝒆𝒏 𝑺𝒊𝒕𝒆 𝑪𝒐𝒏𝒅𝒊𝒕𝒊𝒐𝒏𝒔: Unexpected ground conditions or weather events can cause significant setbacks.

4). 𝑴𝒂𝒕𝒆𝒓𝒊𝒂𝒍 𝑺𝒉𝒐𝒓𝒕𝒂𝒈𝒆𝒔: Delays in material delivery or shortages can halt construction progress.

5). 𝑳𝒂𝒃𝒐𝒓 𝑪𝒉𝒂𝒍𝒍𝒆𝒏𝒈𝒆𝒔: Shortages of skilled labor or labor disputes can lead to project delays.

𝐒𝐭𝐫𝐚𝐭𝐞𝐠𝐢𝐞𝐬 𝐭𝐨 𝐌𝐢𝐭𝐢𝐠𝐚𝐭𝐞 𝐃𝐞𝐥𝐚𝐲𝐬:

1). 𝑫𝒆𝒕𝒂𝒊𝒍𝒆𝒅 𝑷𝒍𝒂𝒏𝒏𝒊𝒏𝒈 𝒂𝒏𝒅 𝑺𝒄𝒉𝒆𝒅𝒖𝒍𝒊𝒏𝒈: Use tools like Primavera P6 or MS Project for precise scheduling and resource management.

2). 𝑹𝒊𝒔𝒌 𝑴𝒂𝒏𝒂𝒈𝒆𝒎𝒆𝒏𝒕: Proactively identify and assess risks, and have contingency plans in place.

3). 𝑬𝒇𝒇𝒆𝒄𝒕𝒊𝒗𝒆 𝑪𝒐𝒎𝒎𝒖𝒏𝒊𝒄𝒂𝒕𝒊𝒐𝒏: Maintain clear and consistent communication among all stakeholders to address issues promptly.

4). 𝑹𝒆𝒈𝒖𝒍𝒂𝒓 𝑴𝒐𝒏𝒊𝒕𝒐𝒓𝒊𝒏𝒈 𝒂𝒏𝒅 𝑹𝒆𝒑𝒐𝒓𝒕𝒊𝒏𝒈: Conduct regular progress reviews to identify potential delays early and take corrective actions.

5). 𝑪𝒐𝒍𝒍𝒂𝒃𝒐𝒓𝒂𝒕𝒊𝒐𝒏 𝒂𝒏𝒅 𝑭𝒍𝒆𝒙𝒊𝒃𝒊𝒍𝒊𝒕𝒚: Encourage collaboration among teams and be flexible to adapt to changes as they arise.

𝐑𝐞𝐦𝐞𝐦𝐛𝐞𝐫:

𝐷𝑒𝑙𝑎𝑦𝑠 𝑎𝑟𝑒 𝑜𝑓𝑡𝑒𝑛 𝑖𝑛𝑒𝑣𝑖𝑡𝑎𝑏𝑙𝑒, 𝑏𝑢𝑡 𝑤𝑖𝑡ℎ 𝑝𝑟𝑜𝑝𝑒𝑟 𝑝𝑙𝑎𝑛𝑛𝑖𝑛𝑔 𝑎𝑛𝑑 𝑝𝑟𝑜𝑎𝑐𝑡𝑖𝑣𝑒 𝑚𝑎𝑛𝑎𝑔𝑒𝑚𝑒𝑛𝑡, 𝑡ℎ𝑒𝑖𝑟 𝑖𝑚𝑝𝑎𝑐𝑡 𝑐𝑎𝑛 𝑏𝑒 𝑚𝑖𝑛𝑖𝑚𝑖𝑧𝑒𝑑. 𝐿𝑒𝑡’𝑠 𝑤𝑜𝑟𝑘 𝑡𝑜𝑔𝑒𝑡ℎ𝑒𝑟 𝑡𝑜 𝑏𝑢𝑖𝑙𝑑 𝑚𝑜𝑟𝑒 𝑒𝑓𝑓𝑖𝑐𝑖𝑒𝑛𝑡, 𝑜𝑛-𝑡𝑖𝑚𝑒, 𝑎𝑛𝑑 𝑠𝑢𝑐𝑐𝑒𝑠𝑠𝑓𝑢𝑙 𝑝𝑟𝑜𝑗𝑒𝑐𝑡𝑠! 🚀
@etconp

👉Here are the main types of column failure, along with explanations of what causes them:

1. Buckling:

• Cause: This occurs when a column is subjected to a compressive load that exceeds its buckling capacity. Buckling is essentially a sudden lateral (sideways) deformation of the column, often resulting in a sudden collapse.
• Factors:
  * Slenderness Ratio: The ratio of the column's length to its least radius of gyration. Slender columns are more prone to buckling.
  * Load: High compressive loads increase the risk of buckling.
  * Material Properties: The stiffness and strength of the column material play a role.

2. Crushing:

• Cause: Crushing occurs when the compressive load applied to a column exceeds its compressive strength. The column literally crushes under the weight.
• Factors:
  * Load: High compressive loads increase the risk of crushing.
  * Material Strength: The material's resistance to compression.
  * Cross-Sectional Area: A smaller cross-sectional area makes the column more vulnerable to crushing.

3. Shear Failure:

• Cause: Shear failure happens when the shear stress in the column exceeds its shear strength. This often occurs in columns subjected to lateral loads or eccentric loads.
• Factors:
  * Lateral Loads: Forces applied perpendicular to the column's axis.
  * Eccentric Loads: Loads applied off-center of the column, causing bending.
  * Material Strength: The column's resistance to shear stress.

4. Combined Failure:

• Cause: Columns can fail due to a combination of factors. For example, buckling can lead to increased shear stresses, which then contribute to shear failure.
• Factors:
  * Slenderness Ratio: A slender column is more susceptible to both buckling and shear failure.
  * Load Type: A combination of compressive, lateral, and eccentric loads can lead to a complex failure mode.

5. Fatigue Failure:

• Cause: Fatigue failure occurs due to repeated or cyclic loading. Over time, these repeated stresses can lead to cracks and eventually failure.
• Factors:
  * Load Cycles: The number of times the load is applied and removed.
  * Stress Range: The difference between the maximum and minimum stress levels in each cycle.
  * Material Properties: The fatigue resistance of the column material.

6. Corrosion-Induced Failure:

• Cause: Corrosion can weaken the column material, reducing its strength and load-carrying capacity.
• Factors:
  * Exposure: Exposure to moisture, chemicals, and salt can accelerate corrosion.
  * Material Type: Some materials are more susceptible to corrosion than others.

Prevention and Mitigation:

• Proper Design: Ensure the column is adequately designed to resist the expected loads.
• Material Selection: Choose materials with appropriate strength and durability.
• Corrosion Protection: Use protective coatings or treatments to prevent corrosion.
• Regular Inspection: Monitor the column for signs of damage or deterioration.

In summary, column failures are a serious concern in structural engineering. Understanding the different modes of failure is essential for ensuring the safety and stability of structures.

Via Eagleng

@etconp

👉የኮንስትራክሽን ጨረታ/ Construction Tender

🏷ብዙ ኮንትራክተሮች ከ Technical ግምገማ ውጪ እየሆኑ እናያለን የ ቻናላችን ቤተሰቦች በሰበሰቡት መረጃ መሰረት አንዱ ምክንያት የግዢ አዋጁ ከደነገገው መመሪያ በላይ requirement ስለሚቀመጥ ነው።

💫ለምሣሌ የግንባታ የተሻሻለው መመሪያ ላይ ስለ turnover እንዲህ ያስቀምጣል:-

▶️ለሀገር ውስጥ ተጫራቾች peak annual turn over እንዲያዝ ሲያዝ ለውጪ ተቋራጮች ደግሞ average turnover  እንዲያዝ ያዛል ነገር ግን የሀገር ውስጥ ተቋራጭ average ባለሟሟላቱ ውድቅ ይደረጋል።

⏹turnover amount የሚሰላው የሚገነባው ፕሮጀክት ዋጋ ለሚፈጀው ወራት በማካፈልና በ12 በማብዛት ሲሆን አንድ ፕሮጀክት engineering estimation 100 million ሆና duration 3 አመት ቢሆን መጠየቅ ያለበት peak 33.3 million birr ለሀገር ውስጥ ተቋራጭ እና 100 million ለውጪ ተቋራጭ እንደ ማለት ነው።

🌟ስለዚህ ጨረታ ሲገዙ ይህንን አዋጅ በመጥቀስ clarification እየጠየቁ ቢሞሉ ጨረታውን የማለፍ እድልዎ ከፍ ይላል

📩ተጨማሪ ይጠቅማል የምትሉት መልዕክቶን ለእኛ ለማጋራት👇

❇️ቴሌግራም ላይ በ t.me/ETCONpBOT ሀሳባችሁን ብትልኩልን፣ ይደርሰናል!

📜እኛም ገምግመን መልሰን እናደርሳለን

@etconp

👉What happend when sugar is added to concrete?

💫sugar is a well known retardant of concrete and is often used to help adjust the setting times, especially in emergencies.

⭐️Builders used retardants to slow down the setting of concrete, particularly in warm weather, to make it more plastic  and give them more time to work with material.

🚧There are a number of commercial available chemical that can be used to do this, but common salt and sugars are effective.

🏷In the case of sugar, the setting process is slowed down because it interfers with the chemical reaction that causes cement to set when water is added concrete is made using cement which is a combination of crushed and heated limestone , clay, and gypsums ; aggregate such as gravel, sand and water.

⭐️Adding water causes a chemical reaction called hydration , where hydrogen from the waters combines with calcium, sulphate, aluminum and silicon from the cement .

💫Thus releases heat and depending on the proportion of each of these minerals which hydrate at different rates, however, is composed of carbon, oxygen and hydrogen atoms which can interfere with the hydration process by binding with the minerals and slow down the reaction.

@etconp

Intercon Construction Chemicals 
    
👉 Authorized agent of MC (Conmix), Weber and SIMENTEK

● Concrete Admixtures
● Bonding Agents
● Waterproofings
● Concrete Repair, Grout   
● Tile Adhesive & Tile Joint Fillers 
● Wall Putty, Prime Coat, Rush Coat
● Quartz, Contextra
● Specialized paints (Thermal and Insulation Paints, Street and Playground Paints)
● Floor hardener, Epoxy              
● Geotextiles, Geo-membranes and other construction chemicals and materials

Tel: 0961955555 or 0961955559
Address: Signal, around signal mall

ታምራት  ፕሌት እና ጄቦልት አቅራቢ

👉ሁሉን በአንድ ቦታ የሚያገኙበት እና ለሁሉም ቅርብ

🔰ምን ይፈልጋሉ?

📌ፕሌትና ጄቦልት በፈለጉት አይነት የተዘጋጀ አለን

✂️ላሜራ ማስቆራረጥ ማስበሳት ወይንም ማሳጠፍ ከፈለጉ  እንዳያስቡ ሁሉንም ማሽኖች አስገብተናል

🔗ፌሮ (ቶንዲኖ) ጥርስ ማስበጀት ወይንም ማሳጠፍ ካሰቡ ለሱም ማሽኑ በጃችን ነዉ

📐ማንኛዉንም የሞደፊክ ስራዎችን የሚሰሩ ብቁ ባለሙያዎችም አሉን

☎️ይደዉሉልን ያማክሩን

📍ኢትዮጵያ ዉስጥ የትም እንልክሎታለን

አድራሻችን፦ ቁ.1 አዉቶብስ ተራ(መሳለሚያ)
                    ቁ.2 መርካቶ
                    ቁ.3 ተክለሀይማኖት

0904040477
0911016833

👉Hydrodemolition

💫Hydrodemolition, or hydro demolition, is a concrete removal technology that employs high-pressure water to remove damaged concrete, as well as asphalt and grout.

⭐️This method creates a great bonding surface for repair and new coating applications.

Via Yonatan

@etconp

👉Foundation underpinning

💫Foundation underpinning* is a construction technique used to strengthen and stabilize the foundation of an existing building or structure.

🚧It is typically performed when the existing foundation is inadequate or unstable, often due to soil subsidence, structural damage, or an increase in the load-bearing capacity required by the building.

🏷There are several methods of foundation underpinning, each suitable for different situations:

1. Mass Concrete Underpinning: This method involves excavating sections of the existing foundation beneath the building and pouring concrete to create new, deeper footings. It's a traditional and widely used method suitable for relatively shallow foundations.

2. Beam and Base Underpinning: In this method, reinforced concrete beams are constructed below the existing foundation, spanning across multiple underpinning pits. These beams provide support for the foundation while excavation and construction work proceed in stages.

3. Pile Underpinning: Pile underpinning involves driving piles (long, slender columns) deep into the ground beneath the existing foundation to provide additional support. The piles can be made of steel, concrete, or timber, depending on the soil conditions and structural requirements.

4. Jet Grouting: Jet grouting involves injecting a high-pressure grout mixture (typically cementitious) into the ground beneath the foundation to create a series of interconnected columns or soilcrete. This method is often used in situations where traditional underpinning methods are impractical due to limited access or challenging soil conditions.

5. Screw Piling: Screw piling involves screwing helical piles into the ground beneath the foundation using specialized equipment. The piles provide support and stability to the foundation, and they can be installed quickly with minimal disruption to the surrounding area.

6. Cantilever Needle Beam: This method involves installing a series of needle beams horizontally through the existing foundation wall. These beams are then supported by new, deeper footings constructed on either side of the wall. It's suitable for situations where excavation beneath the entire foundation is not feasible.

7. Grillage Beam Underpinning: Grillage beams are steel or reinforced concrete beams placed beneath the existing foundation at regular intervals. These beams distribute the load of the structure to the underlying soil, providing additional support and stability.

The choice of underpinning method depends on various factors, including the soil conditions, structural requirements, accessibility, and the extent of the foundation repair needed. It's essential to consult with a structural engineer or foundation specialist to determine the most appropriate method for a specific project.

Via Yonatan

@etconp

👉Laboratory tests for cement

💫Several tests are used for quality and strength of cement, including:

⭐️1. Fineness test: This test is used to determine the particle size of cement.

The fineness of cement affects its rate of hydration and strength development.

⭐️2. Soundness test: This test is used to determine the ability of cement to resist volume change and cracking due to hydration.

This test is important to ensure that the cement does not cause expansion or cracking in concrete.

⭐️3. Setting time test: This test is used to determine the time it takes for cement to set and harden.

This test helps to ensure that the cement has the proper setting time for the intended application.

⭐️4. Compressive strength test: This test is used to determine the strength of cement after it has hardened.

The compressive strength of cement is important to ensure that it can withstand the loads placed on it.

⭐️5. Tensile strength test: This test is used to determine the tensile strength of cement.

This test is important for applications where cement may be subjected to tensile stresses.

⭐️6. Heat of hydration test: This test is used to determine the amount of heat released during the hydration of cement.

This test is important to ensure that the heat generated during the hydration process does not cause cracking or other damage to the concrete.

⭐️7. Chemical analysis: This test is used to determine the chemical composition of cement.

This test is important to ensure that the cement meets the desired chemical specifications and does not contain any harmful materials.

❇️ለማንኛውም አስተያየትዎ  እና ሀሳብዎ ይጻፉልን!

📜ለ ስራ እና ጨረታዎች ምንለቅበት ቻናል ለመቀላቀል👉 @ETCONpWORK

📩ሊጽፉልን ካሰቡ @ETCONpBOT

💫ቲክቶክ:👇

www.tiktok.com/@etconp7

@etconp

@etconp

👉RING SAW USES AND APPLICATIONS IN CONSTRUCTION

🏷Ring saws are handheld, so they are used to cut areas that aren’t accessible by road saws but require deeper cuts than a hand saw can provide.

⏺They are also used for precision cutting to prevent pipes and concrete being overcut and damaged.

💫A ring saw can cut through any hard material including:
– Stone – Granite – Marble – Glass – Acrylic Within construction, ring saws are often used for creating small openings through concrete or brick walls – to create windows, door frames and ventilation.

Via Yonatan

@etconp

👉THE BENEFITS OF RING SAWS

⭐️Take a look at the 4 main benefits of using a ring saw to cut concrete.
 
1. PORTABLE & POWERFUL
They are portable and powerful – a ring saw can create a cut of up to 275mm in depth. A ring saw can allow for precise cuts and can create corners and right angle cuts with ease. Ring saws are useful for cutting in confined space too.

2. CLEAN CUTTING
Ring saws are used with water to keep the blade cool, wet blades don’t create as much dust as other methods and so this is a much cleaner method of cutting.
 
3. SAFE CUTTING
The blade is bumped rather than toothed, the abrasive edge works by creating friction against a hard surface, skin is soft so can bounce harmlessly off the bumps.
 
4. NO VIBRATION
A ring saw operates by the blade spinning in a circle, whereas other concrete cutters vibrate, which can wear out the teeth of the machine quicker and cause chips and abrasions to a more delicate material.

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