ታምራት  ፕሌት እና ጄቦልት አቅራቢ

📌ፕሌትና ጄቦልት በፈለጉት አይነት የተዘጋጀ አለን

✂️ላሜራ መቁረጫ መብሻና  ማጠፊያ ማሽኖች አሉን

🔗ፌሮ (ቶንዲኖ) ጥርስ እናበጃለን እንዲሁም እናጥፋለን

📐ማንኛዉንም የሞደፊክ ስራዎችን እንሰራለን

📍ኢትዮጵያ ዉስጥ የትም እንልክሎታለን

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

0904040477
0911016833

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👉What is Fibre-reinforced concrete

🚧Fibre-reinforced concrete (FRC) is concrete that has fibrous materials mixed in to increase the concrete's durability and structural integrity.

FRC has small, short, and discreet fibres that are randomly oriented yet uniformly distributed throughout the concrete.

The fibres can be circular or flat, and often makeup one to three per cent of the concrete mix's total volume.

Common fibres used in reinforced concrete include steel, glass, synthetic, and natural fibres.

⭐️Why fibres are used?

On its own, concrete lacks tensile strength and is prone to cracking But fibre-reinforced concrete can improve tensile strength and control cracking in concrete structures that are often caused by plastic shrinkage and drying shrinkage.

Fibres in concrete can also reduce the permeability of concrete, which limits the amount of water that bleeds out, further reducing shrinkage cracking during curing.

💫The necessity of Fiber Reinforced Concrete

1- It increases the tensile strength of the concrete.
2- It reduces the air voids and water voids the inherent porosity of gel.
3- It increases the durability of the concrete.
4- Fibers such as graphite and glass have excellent resistance to creep, while the same is not true for most resins. Therefore, the orientation and volume of fibres have a significant influence on the creep performance of rebars/tendons.
5- Reinforced concrete itself is a composite material, where the reinforcement acts as the strengthening fibre and the concrete as the matrix. It is therefore imperative that the behaviour under thermal stresses for the two materials be similar so that the differential deformations of concrete and the reinforcement are minimized.
6- It has been recognized that the addition of small, closely spaced and uniformly dispersed fibres to concrete would act as crack arrester and would substantially improve its static and dynamic properties.

🌟Types of Fibers

1- Steel fibres
2-  Glass fibres 
3- Carbon Fibers
4- Cellulose Fibers
5- Synthetic Fibers
6-  Natural Fibers

🏷Advantages Of Fibre Reinforced Concrete :

1- High modulus of elasticity for effective long-term reinforcement, even in the hardened concrete. Does not rust nor corrode and requires no minimum cover.
2- Ideal aspect ratio (i.e. the relationship between Fiber diameter and length) which makes them excellent for early-age performance.
3- Easily placed, Cast, Sprayed and less labour intensive than placing rebar.
4- Greater retained toughness in conventional concrete mixes.
5-  Higher flexural strength, depending on the addition rate.
6- Can be made into thin sheets or irregular shapes.
7- FRC possesses enough plasticity to go under large deformation once the peak load has been reached.
8-  Increased durability and high flexural rigidity. 9- Reduced permeability, bleeding, and formation of microcracks. 10- Minimum weathering effect. 11. Reduces deflection. 12. Minimum corrosion.

🏷Disadvantages Of Fibre Reinforced Concrete:

1- Fibres are costly.
2- The fibres should be uniformly distributed in concrete because they may not mix well and form lumps.
3- The size of the coarse aggregate is restricted to 10 mm.
4- Mixing of fibres in large volume could be tedious.
5- Construction with FRC skilled labours.

@etconp

👉የባሕር ዳር ዓለም አቀፍ ስታዲየም ግንባታ እንዲጠናቀቅ ማሳሳሰቢያ ተሰጠ

🚧የባሕር ዳር ዓለም አቀፍ ስታዲየም ግንባታ እንዲጠናቀቅ የሴቶች፣ ህጻናት እና ማኅበራዊ ጉዳይ ቋሚ ኮሚቴ ማሳሳሰቢያ ሰጠ።

💫አሚኮ እንደዘገበው በአማራ ክልል ምክር ቤት የሴቶች፣ ሕጻናት እና ማኅበራዊ ጉዳይ ቋሚ ኮሚቴ የወጣቶች እና ስፖርት ቢሮ የ2016 በጀት ዓመት የሥራ አፈጻጸም ገምግሟል።

⭐️የቢሮው ኃላፊ እርዚቅ ኢሣ ሪፖርት ያቀረቡ ሲሆን፥ ሪፖርቱን ያዳመጡት የቋሚ ኮሚቴ አባላትም የባሕር ዳር ዓለም አቀፍ ስታዲየም ግንባታ በየዓመቱ በጀት እየተያዘለት ነገር ግን አለመጠናቀቁ አሳሳቢ እንደሆነ አንስተዋል።

🏷ግንባታው ትኩረት ተሰጥቶት እንዲጠናቀቅም ማሳሰቢያ ሰጥተዋል።

Via Arada Fm

@etconp

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📍Head Office
Location: Derar Mall 9th floor opposite to Sahlite Mihret Church

📱 +251 929 53 1707

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👉What Is Bearing Capacity Of Soil?

🚧The maximum load per unit area which the soil can carry without any settlement or displacement is termed as bearing capacity of the soil.

🏷Bearing capacity of soil is determined by the following two methods:-

1. Dropping weight method.
2. Slowly applying load method.

💫Ultimate Bearing Capacity Of Soil:

⏺The minimum load on unit area causing failure is called the ultimate bearing capacity of the soil.

🌟Safe Bearing Capacity Of Soil:

⏺The maximum intensity of loading that the soil will safely carry without the risk of shear failure is called safe bearing capacity of the soil.

⏺It is obtained by dividing the ultimate bearing capacity by a certain factor of safety which is used in the design of foundation.

▶️The value of factor of safety varies from 2 to 3 depending upon the nature of the soil.

❇️Maximum Safe Bearing Capacity Of Different Types Of Soil:

1. Soft, wet clay or muddy clay — 5,000 kg/m2
2. Soft clay  — 10,000 kg/m2
3. Fine, loose and dry sand  — 10,000 kg/m2
4. Black cotton soil  — 15,000 kg/m2
5. Moist clay and sand clay Mixture — 15,000 kg/m2
6. Loose gravel — 25,000 kg/m2
7. Medium clay — 25,000 kg/m2
8. Medium, compact and dry sand — 25,000 kg/m2
9. Compact clay — 45,000 kg/m2
10. Compact sand — 45,000 kg/m2
11. Compact gravel — 45,000 kg/m2
12. Soft rocks — 45,000 kg/m2
13. Laminated rock such as sand stone &  Lime stone — 165,000 kg/m2
14. Hard rocks such as granite, diorite, trap–  330,000 kg/m2

@etconp

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

👉Waffle Slab

🚧Waffle slab is a reinforced concrete roof or floor containing square grids with deep sides and it is also called as grid slabs.

▶️This kind of slab is majorly used at the entrance of hotels, Malls, Restaurants for good pictorial view and to install artificial lighting.

▶️This a  type of slab where we find a hollow hole in the slab when the formwork is removed.  Firstly PVC trays (pods) are placed on shuttering then reinforcement is provided between the pods and steel mesh is provided at top of the pods and then concrete is filled. After concrete sets, the formwork is removed and PVC pods are not removed.

▶️This forms a hollow hole in it in which hole is closed at one end.

▶️The concrete waffle slab is often used for industrial and commercial buildings while wood and metal waffle slabs are used in many other construction sites.

▶️This is one of the types of concrete slabs.

💫Where to use Waffle Slab & Waffle slab details:

⏺A waffle slab has a holes underneath, giving an appearance of waffles.

⏺It is usually used where large spans are required (e.g auditorium, cinema halls) to avoid many columns interfering with space. Hence thick slabs spanning between wide beams (to avoid the beams protruding below for aesthetic reasons) are required.

⏺The main purpose of employing this technology is for its strong foundation characteristics of crack and sagging resistance.

⏺Waffle slab also holds a greater amount of load compared with conventional concrete slabs.

🔰Types of Waffle slabs:

▶️Based on the shape of Pods (PVC Trays) waffle slabs are classified into the following types:

⏹Triangular pod system and
Square pod system

🎲Advantages of Waffle slabs:

❇️Waffle slabs are able to carry heavier loads and span longer distances than flat slabs as these systems are light in weight.

❇️Waffle slab can be used as both ceiling and floor slab.
Suitable for spans of 7m – 16m; longer spans may be possible with post-tensioning.

❇️These systems are light in weight and hence considerable saving is ensured in the framework as the light framework is required

🏷Disadvantages of Waffle slabs:

⏺Waffle slab is not used in typical construction projects.

⏺The casting forms or moulds required for precast units are very costly and hence only economical when large scale production of similar units are desired.

⏺Construction requires strict supervision and skilled labour.

@etconp