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👉African Development Bank renews and expands agreement to use FIDIC standard contracts for a further five years

🏷FIDIC has renewed and expanded a major agreement with the African Development Bank Group that will now see the multilateral development bank employ ten FIDIC standard contracts for the next five years. The bank is the leading source for development financing in Africa and is committed to supporting inclusive and sustainable growth and good governance across the continent.

📜Under the terms of the agreement, FIDIC has granted the bank a non-exclusive license to refer to ten major FIDIC contracts for projects they finance and the documents will be used in the bank’s main standard bidding documents. The list of contracts now includes reprints of the 2022 FIDIC Rainbow Suite, the latest FIDIC Green Book 2021 and the reprint of Emerald Book 2023 contract for Underground Works and the Dredgers contract 2016.

⏺The suite of contracts covered by the agreement with FIDIC covers a wide range of international construction and infrastructure work.

⏺The Bank’s initiative represents a further key endorsement for FIDIC contracts from a major international funding organisation, following similar agreements signed with the World Bank and many other multilateral development banks around the world.

💫FIDIC president Catherine Karakatsanis MESc PEng FCAE ICD.D LL.D D.Eng said: “I am delighted that the AfDB has renewed and expanded its agreement with FIDIC to be used as an accepted form of contract for use with their standard bidding documents. As well as this being another major development for FIDIC, we hope that this move will create more certainty in the market, as by facilitating the use of FIDIC contacts on major projects the AfDB is saying that they endorse the fair and balanced approach that these documents offer to parties on major construction contracts.

“We know that the certainty FIDIC contracts bring makes it easier to get projects underway, as many of the common commercial risks are clearly addressed in the contracts and all parties understand their obligations and responsibilities. FIDIC looks forward to the AfDB’s continuing endorsement of these contracts providing additional reassurance to the financial, institutional and private equity investors operating in the global market to adopt the use of FIDIC standard procurement contracts as an effective tool to mitigate the risks associated with major infrastructure projects and assets.”

⏺Commenting on the signing of the agreement, Frank Mvula, director, fiduciary and inspection department at the African Development Bank, said: “We are glad to have concluded this agreement that will enable us to incorporate FIDIC contracts in our main standard bidding documents.

⏺There is no doubt that the use of the internationally recognised FIDIC contracts is a step towards enhancing equity and economy, as well as efficient and effective contract management, as emphasised under the bank’s procurement framework. We look forward to working with FIDIC for another five years.”

@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፦ 1. መርካቶ
                   ቁ.1 አየር ጤና
                    ቁ.3 ተክለሀይማኖት

0904040477
0911016833

👉ፕላንና ልማት ቢሮ በኢኖቬሽንና ቴክኖሎጂ ልማት ቢሮ ያስለማውን አዲስ ድረገጽ በመረካከብ ወደ ስራ አስገባ!

🏷ቢሮው www.aapdb.gov.et የተሰኘ የከተማውን የገፀምድራዊ፣ ማህበራዊና ምጣኔ ሃብታዊ ፕላን እንዲሁም የተለያዩ የጥናትና ምርምር ውጤቶችን መረጃ ተደራሽ ለማድረግ፣ ለማስተዋወቅና ከተማዋን በዘመናዊ ፕላን መምራት የሚያስችል ደረጃውን የጠበቀ ድረገጽ በማስለማት በዛሬው እለት በይፋ በመረካከብ ወደ ስራ አስገብቷል፡፡

በቢሮው የከተማ ጥናት፤መረጃና አቅም ግንባታ ዘርፍ ምክትል ቢሮ ኃላፊ አቶ ጌታቸው ኃይሌ እንደተናገሩት ለከተማዋ ነዋሪዎች ብቻ ሳይሆን ለአለምአቀፍ ማህበረሰብ ባሉበት ሆነው የቢሮዉን ልዩ ልዩ መረጃዎች ማግኘት የሚያስችልና የፕላን ትግበራና አፈፃፀም አስተያየቶችን ጥቆማ መስጠት የሚያስችል ዌብሳይት አስለምተው ርክክብ መፈፀሙን ተናግረዋል፡፡

አቶ ጌታቸው የከተማው ኢኖቬሽንና ቴክኖሎጂ ልማት ቢሮ የፕላንና ልማት ቢሮ ዘመናዊ ቴክኖሎጂዎችን በመጠቀም አገልግሎት እንዲሰጥ ከተቋማት ጋርም የሚያስተሳስር ሲስተም በተጨማሪነት በማልማት ተቋማዊ ትብብሩን እያጎለበተ መሆኑን አስገንዝበዋል፡፡

የኢኖቬሽንና ቴክኖሎጂ ልማት ቢሮ ጽ/ቤት ኃላፊ አቶ ግሩም አብተው በበኩላቸው የከተማው ስማርት ሲቲ ትግበራ የሚስማሙ ዘመናዊ ቴክኖሎጂዎችን በማልማት የከተማዋን ዲፕሎማቲክ ማዕከልነት፣ ዓለማቀፍ ተወዳዳሪነትና ተመራጭነት እያሳደግን እንገኛለን ሲሉ በርክክቡ ወቅት ተናግረዋል፡፡

በርክክብ ሥነ ስርዓቱ ላይ የአዲስ አበባ ከተማ አስተዳደር ፕላንና ልማት ቢሮ ምክትል ቢሮ ኃላፊ አቶ ጌታቸው ኃይሌ፣ የፕላንና ልማት ቢሮ ጽ/ቤት ኃላፊ አቶ ሲሳይ ተረፈ፣ የኢኖቬሽንና ቴክኖሎጂ ልማት ቢሮ ጽ/ቤት ኃላፊ አቶ ግሩም አብተው፣ የሁለቱም ተቋማት ዳይሬክቶሬት ዳይሬክተሮች  ተገኝተዋል።

ይህ ድረገጽ ደረጃውን በጠበቀ መልኩ በሶስት ቋንቋዎች የተግባቦትና የህዝብ ግንኙነት ስራ በመስራት የከተማዋን የልማት ውጤቶች፣ ታላላቅ ፕሮጀክት ውጤቶች፣ የኮሪደር ልማቶች፣ የአካባቢ ልማትና የመሰረተ ልማት ፕላን ስራዎች በማስተዋወቅና ገፅታ በመገንባት ረገድ ከፍ ያለ አበርክቶ ያደርጋል ተብሎ ይጠበቃል።

Via Addis Ababa City Plan and Development Bureaucracy

@etconp

👉What is Asphalt Road Construction?

🚧Asphalt road construction: involves the use of asphalt, a mixture of aggregates, binder, and filler, to build and maintain roads, highways, and other pavement surfaces.

🏷The components of asphalt include aggregates, binder, and filler. Aggregates are the inert materials that provide strength and bulk to the asphalt mixture.

⏺Common aggregates used include crushed rock, sand, gravel, or slags.

The binder is the adhesive substance that holds the aggregates together, with bitumen being the most common binder used.

Fillers are fine materials that fill the gaps between the aggregates and binder, such as limestone dust, cement, or hydrated lime.

The asphalt mixture is created by combining the aggregates, binder, and filler in specific proportions. The mixture is then heated to a high temperature (around 300°F) to facilitate mixing and application.

The asphalt road construction process typically involves several steps. First, the site is prepared by clearing the area, removing debris, and grading the surface. Next, a layer of compacted aggregate material is laid down to provide a stable base.

The heated asphalt mixture is then applied to the base course using a paver or spreader.

After the asphalt mixture is applied, it is compacted using rollers or compactors to achieve the desired density and smoothness. Finally, the surface is finished with a layer of asphalt emulsion or sealcoat to protect it from the elements.

Asphalt road construction is used for a wide range of applications, including highways and roads, parking areas, railway tracks, ports and airport runways, bicycle lanes and sidewalks, and playgrounds and sports areas.

Asphalt is a popular choice for road construction due to its durability, flexibility, and resistance to heavy traffic and harsh weather conditions.

@etconp

👉በ ከተማ ግንባታ ፍቃድና ቁጥጥር ጽ/ቤት የሚሰጡ አገልግሎቶች፣ የአገልግሎት ስታንዳርዶችና ቅድመ-ሁኔታዎች ከፈለጉ ይህን PDF አውርደው ይመልከቱ🙏

https://t.me/ETCONp

@etconp

Intercon Construction Chemicals 
    
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● Concrete Admixtures
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Tel: 0961955555 or 0961955559
Address: Signal, around signal mall

👉Aggregate Size Categories

1. Fine Aggregates

Size: Particles smaller than 4.75 mm (passing through a 4.75 mm sieve).

Examples: Natural sand, crushed sand, stone dust.

Uses:

Fills voids between coarse aggregates.

Used in mortar, plaster, and fine finishing work.

Grading: Classified as Zone I, II, III, or IV (IS 383), with Zone I being coarser and Zone IV being finer.
---

2. Coarse Aggregates

Size: Particles larger than 4.75 mm but typically smaller than 80 mm.

Examples: Gravel, crushed stone, recycled concrete.

Uses:

Provide strength to concrete.

Used in structural concrete, pavements, and road base layers.

Grading: Classified into single-size aggregates (e.g., 20 mm or 40 mm) or graded aggregates (mixed sizes for better packing).
---

3. All-in Aggregates

Size: A combination of fine and coarse aggregates in a single mix.

Uses:

Simplifies construction processes.

Commonly used in low-strength concrete and unbound subbases.
---

Categorization Based on Origin

1. Natural Aggregates

Sourced from natural deposits like riverbeds, quarries, or sea beds.

Examples: River sand, gravel, crushed rock.

Advantage: Minimal processing.

2. Artificial Aggregates

Manufactured or processed materials.

Examples: Fly ash, slag aggregates, expanded clay.

Advantage: Tailored properties for specific applications.

3. Recycled Aggregates

Derived from demolished concrete, bricks, or asphalt.

Examples: Crushed concrete, asphalt millings.

Advantage: Eco-friendly and cost-effective.
---

Categorization Based on Density

1. Lightweight Aggregates

Density: Less than 1120 kg/m³.

Examples: Expanded clay, pumice, cinders.

Uses: Lightweight concrete for non-load-bearing applications.

2. Normal Weight Aggregates

Density: 1120–1920 kg/m³.

Examples: Sand, gravel, crushed stone.

Uses: Standard concrete and structural works.

3. Heavyweight Aggregates

Density: Greater than 1920 kg/m³.

Examples: Barite, magnetite.

Uses: Radiation shielding, heavyweight concrete.

---

Categorization Based on Shape

1. Rounded Aggregates

Naturally worn particles (e.g., river gravel).

Advantage: Better workability.

Use: Decorative concrete.

2. Angular Aggregates

Irregular shapes with sharp edges (e.g., crushed stone).

Advantage: High interlocking and strength.

Use: Structural concrete.

3. Flaky Aggregates

Thin and elongated in shape.

Disadvantage: Reduces concrete strength.

Use: Limited applications.

4. Elongated Aggregates

Longer in one dimension.

Disadvantage: Poor workability.

Use: Rarely used alone.

---

Importance of Aggregate Size

1. Workability: Fine aggregates improve workability, while coarse aggregates reduce it.

2. Strength: Proper grading ensures maximum strength by reducing voids.

3. Durability: Large aggregates enhance durability in heavy-duty applications.

4. Economy: Graded aggregates reduce cement consumption.

---

For specific standards, refer to IS 383 (Indian Standard), ASTM C33 (American Standard), or BS EN 12620 (British Standard).

@etconp

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👉Concrete roads are a very expensive choice in the desert for several main reasons:

💫1. The cost of the raw materials :

Concrete needs high-quality materials, such as cement that is resistant to salt, sand, and lime, which increases cost compared to asphalt roads.

💫2. A special design to withstand desert conditions:

To ensure concrete resists cracking and corrosion due to heat and sand, expensive components such as fibers and chemical additives are added, as well as designing more complex extension spacers.

💫3. Transport costs:

Desert project sites are often far from material sources, resulting in a significant increase in transportation costs.

💫4. THE NEED FOR A STRONG FOUNDATION :

Sand soil in the desert requires a strong and stable foundation, which adds an extra cost to the preparatory work.

💫5. Long term maintenance:

Although concrete roads last longer, the cost of maintaining them in a harsh desert environment is high due to the need to periodically address erosion and cracking.

💫6. The cheaper alternatives:

Asphalt driveways are considered significantly less costly to build and maintain, making them the most common choice in desert areas, unless the need requires long-term infrastructure.

⭐️High cost makes concrete roads a less attractive option in desert projects, unless the goal is to invest in an infrastructure that lasts for decades without the need for major changes.

@etconp

👉The Ethiopian Roads Authority (ERA) has specific standards for compaction degrees in road construction, ensuring optimal performance and durability. These standards typically vary depending on the layer type and material properties.

💫General Guidelines:

* Subgrade: 95-98% of the maximum dry density (MDD) as determined by Standard Proctor or Modified Proctor test.
* Subbase: 95-98% of the MDD, similar to the subgrade.
* Base Course: 98-100% of the MDD, requiring higher compaction for load-bearing capacity.
* Capping Layer: 95-98% of the MDD, depending on the material used and its function within the pavement structure.

💫Factors Influencing Compaction Degree:

* Material Type: Different materials have varying compaction characteristics.
* Layer Thickness: Thicker layers may require more effort to achieve desired compaction.
* Moisture Content: Proper moisture content is crucial for optimal compaction.
* Equipment Type: The type of compaction equipment used can influence the achievable density.
* Traffic Load: Higher traffic loads may necessitate higher compaction degrees in lower layers.
Importance of Compaction:
* Stability: Adequate compaction provides stability and resistance to deformation under traffic loads.
* Durability: Well-compacted layers contribute to the overall durability of the pavement structure.
* Drainage: Proper compaction can improve drainage characteristics, reducing the risk of water damage.
* Uniformity: Consistent compaction ensures uniform support for the overlying layers.

⭐️ERA Standards:

For precise and up-to-date compaction requirements, it's essential to refer to the specific ERA standards and specifications applicable to the project.

These documents will provide detailed guidelines based on the latest research and industry best practices.

By adhering to these standards, road construction projects in Ethiopia can achieve high-quality pavements that are safe, durable, and resilient to the challenges of the local environment and traffic loads.

@etconp

👉የ ህንፃ ግንባታ መመሪያ

https://t.me/ETCONp

@etconp

👉🔸ተለዋዋጭ ኮምፓክት/Dynamic compaction

⭐️በጂኦቴክኒክ ምህንድስና ጥቅም ላይ የሚውል የመሬት ማሻሻያ ቴክኒክ ሲሆን ደካማ አፈርን ለማጥለቅ የሚያገለግል ነው።

🏷ይህም ከትልቅ ከፍታ ላይ በተደጋጋሚ ከባድ ክብደት ወደ መሬት ወለል ላይ መጣል ሲሆን፣ ተለዋዋጭ ተጽእኖ የሚመነጨው የማይንቀሳቀስ ክብደት (ከ15-40 ቶን) ከተወሰነ ቁመት (10-30 ሜትር) ድረስ በመጣል ነው

💫እነዚህ ጥብቅ ምቶች በአፈር ላይ ንዝረትን ይፈጥራሉ ፣ ይህ ንዝረትም የአፈሩ አቅምን ያሻሽሽላል፣ የንዝረት ተፅዕኖውም እስከ 12 ሜትር ጥልቀት ይደርሳል።

⏺ይህም ክብደት ለተወሰኑ ጊዚያት በቦታው/ሳይቱ ላይ ባለው የፍርግርግ/Grid pattern ላይ ለተወሰኑ ጊዜያት ይጣላል

⏹ሂደቱ የሚፈጥራቸው እያንዳንዱ ነጠብጣብ ቦታ ላይ የተፈጠሩት አሻራዎች ከእያንዳንዱ ማለፊያ በኋላ በጠጠራማ ሰለክት ማቴሪያል ይሞላሉ።

🎲ጥቅሞች፡-

⏺1. የተለያዩ ደካማ የአፈር አይነቶችን የማሻሻል አቅም ያለው መሆኑ

⏺2. የመሸከም አቅም መጨመር

⏺3. የቀነሰ ሴትልመንት

⏺4. የታከሙ ሰለክት አፈር እና ሙላዎች መጠጋጋት፣ የግጭት አንግል እና ግትርነት ይጨምራሉ

⏺5. ጥልቀት የሌላቸው መሠረቶች ያለ

📍ጥልቅ ቁፋሮ ወይም መቆለል እስከሚችሉ ድረስ በዳርቻ ቦታዎች ላይ ያለውን የአፈር ሁኔታ ማሻሻል ይችላል።

@etconp

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👉Pipe Frame Scaffolding

🏷This type of scaffolding is most commonly found on construction sites and is used to support workers and materials on various jobs.
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⭐️Main components of scaffolding:

1. Top Rail
Provides protection to prevent workers from falling down.

2. Mid Rail
Added as an extra safety measure next to the top handrail.

3. Toe Board
Prevents tools or materials from falling off the work platform.

4. Board
It is the work surface on which workers stand.

5. Post/Standard (Vertical Column):
The main post that carries the entire chassis.

6. Random Orthodontic Brackets (Random Orthodontic Brackets):
Enhances horizontal and vertical stability for the scaffold.

7. Holders/Transoms (Horizontal Defects):
Support panels and tie vertical columns together.

8. Couplers (Connectors):
Used to tie scaffolding pieces together strongly and safely.

9. Base Plate (Metal Base):
Vertical posts are placed to distribute lambs on the ground.

10. Sill/Sole Board (Wooden Base):
Used to reduce soil pressure and provide more stability.

11. Runners/Ledgers  (Longitudinal Impact):
Attach long vertical columns for better stability

12. Self-closing strips):
Used to secure entrances and exits

13. Longitudinal ties
Stability is reinforced by scaffolding

14. Base lift/player lift (lower bracket): It provides extra support for the chassis below

@etconp