👉የግንባታ ጨረታ

🌟ማስታወቂያ

🏛ታዕካ ነገሥታት በአታ ለማርያም ቤ/ክ (አራዳ ክፍለ ከተማ፣ ወረዳ 08) ለልዩ ልዩ አገልግሎት የሚውል G+7 ህንፃ የመጀመሪያ ዙር የግንባታ ሥራ በግልጽ ጨረታ አወዳድሮ ማሠራት ይፈልጋል።

🔹 የተወዳዳሪዎች መስፈርት: ደረጃ 4 እና ከዚያ በላይ (GC/BC Four and above)

🔹 የጨረታ ሰነድ ዋጋ: 2,500 ብር (ከጥቅምት 02 - 10 ቀን 2019 ዓ.ም. ይሸጣል)

🔹 የጨረታ ማስከበሪያ (CPO): 200,000 ብር
🔹 የሰነድ ማስገቢያ: እስከ ጥቅምት 11 ቀን 2019 ዓ.ም. ከቀኑ 08:00 ሰዓት ድረስ
🔹 ጨረታ መክፈቻ: ጥቅምት 11 ቀን 2019 ዓ.ም. ከቀኑ 08:30 ሰዓት

📞 ለበለጠ መረጃ: +251 911 66 63 15

ታዕካ ነገሥታት በአታ ለማርያም ቤ/ክ

የኢትዮጵያ ኮንስትራክሽን ሥራ ተቋራጮች ማህበር

@etconp

🚨 WHY DO REINFORCED CONCRETE BEAMS CRACK?
Common causes include:
1️⃣ Excessive loading
2️⃣ Flexural stresses
3️⃣ Shear stresses
4️⃣ Shrinkage
5️⃣ Settlement or movement
6️⃣ Poor construction practices
7️⃣ Corrosion of reinforcement
⚠️ Not every crack indicates structural failure, but significant or changing cracks require professional assessment.
🏗️ Remember: Identify the cause before selecting a repair method.


@ETCONP

🏗️ Flyover vs. Overpass vs. Underpass
🔹 1. Flyover An elevated road built over another road, junction, or obstacle to reduce traffic congestion.
🔹 2. Overpass A bridge that carries one road over another road or railway, allowing traffic to cross at different levels.
🔹 3. Underpass A road constructed below another road or railway. Proper drainage is essential to prevent flooding.
✅ Key Difference:
Flyover: Elevated road to bypass traffic or obstacles.
Overpass: One route passes above another.
Underpass: One route passes below another.
Note: A flyover is a type of overpass in many contexts.

@ETCONP

📊Professional Interim Payment Certificate (IPC) Excel Template

🌟የግንባታ ሥራ ክፍያን በቀላሉ ለማስላት፣ ለመከታተል እና IPC ለማዘጋጀት ይህን Editable Excel Template ይጠቀሙ👇

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🏠 Types of Roofs in Building Construction

🔹 Common Roof Types:

A-Frame Roof
Barrel Vault Roof
Dome Roof
Geodesic Dome
Hipped Roof
Butterfly Roof
Saltbox Roof
Monitor Roof
Curved Roof
Conical Roof
Cross-Hipped Roof
Combination Roof
Dutch Gable Roof
Clipped Gable Roof
Cross-Gable Roof
Flat Roof
Hexagonal Roof
Valley Gable Roof
Square Hipped Roof
Rectangular Hipped Roof
Jerkinhead Roof
Mansard Roof
Gambrel Roof
Shed/Skillion Roof
Dual Monitor Roof
Square Pyramid Roof
Rectangular Pyramid Roof
Canopy Roof

🧱 Common Roofing Materials:

Clay and concrete tiles
Metal sheets
Slate
Asphalt shingles

📌 Key Design Considerations: Consider climate, rainfall, wind loads, drainage, waterproofing, durability, maintenance, and construction cost.

🏗️ Choose the right roof for safety, durability, and performance!

@ETCONpWORK

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🌟የኮንስትራክሽን ኮንትራት አስተዳደርዎን በቀላሉና በሙያዊ መንገድ ያደራጁ

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📐 HOW TO CALCULATE CONCRETE VOLUME

The basic formula is:
Volume = Length × Width × Height

Example: A slab measures:

📏 Length = 5 m

📏 Width = 4 m

📏 Thickness = 0.15 m
Calculation:
5 × 4 × 0.15 = 3 m³

✅ Required geometric concrete volume = 3 cubic metres.

📌 Allowances for waste, openings, and ordering should be considered separately.

👇 Try calculating the volume of a beam measuring 6 m × 0.25 m × 0.40 m.

@ETCONP

🏡 ቤትዎን ውብ፣ ዘመናዊና ማራኪ ማድረግ ይፈልጋሉ? 😍
🎨📘 መሰረታዊ የውስጥ ዲዛይን
Basic Interior Design E-book
💡 ውብ ቤት ለመፍጠር ውድ እቃዎች ብቻ አያስፈልጉም! ትክክለኛ እውቀት፣ ፈጠራ እና የዲዛይን ሀሳብ ያስፈልጋሉ።
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👇 ኢ-መጽሐፉን አሁኑኑ ያግኙ!
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📊WHAT IS RATE ANALYSIS IN CONSTRUCTION?

Rate analysis determines the cost of completing a unit of work.

It commonly considers:

🧱 Material costs

👷 Labour costs

🚜 Equipment costs

🚚 Transportation

📋 Overheads

💰 Applicable profit and other project-specific costs
Example: The cost of constructing 1 m³ of concrete depends on its specified mix, materials, labour, equipment, and local prices.

💡 Rate analysis helps contractors prepare realistic estimates and tender prices.

👉ለ ኳንቲቲ ሰርቨይንግ እጅግ ጠቃሚ በተለይ Rate Analysis ስትሰሩ የሚያግዛቹ ስታንዳርዶች የያዘ መፅሃፍ ይፈልጋሉ?

🔆ስለ labour እና equipment UF(Utilization Factor) ከዚህ በተጨማሪ የ labour,Equipment እና machinery composition standard ወይ norms ጨምሮ Material consumption rate standard ያካተተ መፅሀፍ ከፈለጉ ከታች ባለው ሊንክ ያውርዱ👇

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🌍 WHAT IS DIFFERENTIAL SETTLEMENT?

Differential settlement occurs when different parts of a structure settle by different amounts.

Possible causes:

🔹 Variable soil conditions

🔹 Uneven loading

🔹 Poorly controlled groundwater changes

🔹 Inadequate foundation design

🔹 Changes in nearby ground conditions

Possible warning signs include cracking, distortion, and doors or windows becoming difficult to operate.

⚠️ Suspected structural movement should be assessed by a qualified professional.

@ETCONP

🏗️ ONE-WAY SLAB vs. TWO-WAY SLAB — UNDERSTAND THE DIFFERENCE!

A reinforced concrete slab transfers floor loads to beams, walls, columns, or other supporting elements.

Its structural behavior depends on its support conditions, geometry, stiffness, and reinforcement design.

🔹 1. One-Way Slab

A one-way slab primarily transfers loads in one direction, generally toward two opposite supporting sides.

Key characteristics:

Main flexural reinforcement is generally provided in the primary spanning direction.
Load transfer is predominantly one-way.

It is commonly used where the slab's support arrangement produces one-way action.

🔹 2. Two-Way Slab

A two-way slab transfers loads in both principal directions to its supporting elements.

Key characteristics:

Flexural action occurs in two directions.

Reinforcement is designed to resist bending in both directions.

Support conditions and panel proportions influence its behavior.

📐 Engineering Tip: A common preliminary indicator is the longer-to-shorter span ratio. A ratio of approximately 2 or more often indicates one-way behavior for conventional rectangular slabs supported on four sides.

However, the actual classification must follow the structural system and design criteria.

⚠️ Never determine reinforcement from slab dimensions alone.

Always follow approved structural drawings and applicable design standards.

👇 Question: Which topic should we explain next — flat slabs, ribbed slabs, or waffle slabs?

@ETCONP

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🚨 WHY DO REINFORCED CONCRETE BEAMS DEVELOP CRACKS?

Cracks in reinforced concrete beams can develop for several reasons.

Understanding their cause is essential before deciding whether monitoring, repair, or structural intervention is required.

🔹 1. Flexural Cracking
These cracks develop when bending stresses cause the concrete to crack, commonly in the tension zone of a beam.

🔹 2. Shear Cracking
Diagonal cracks may develop due to shear stresses. Their significance depends on their location, pattern, width, and structural conditions.

🔹 3. Shrinkage Cracking
Concrete can shrink as it loses moisture and undergoes hydration-related volume changes. Restraint can contribute to cracking.

🔹 4. Excessive Loading
Loads beyond the intended design conditions may contribute to excessive deflection or cracking.

🔹 5. Reinforcement Corrosion
Corrosion products can expand and cause cracking, delamination, and concrete cover deterioration.

🔹 6. Poor Construction Practices
Inadequate curing, poor compaction, unsuitable construction joints, or incorrect reinforcement placement may contribute to defects.

🔹 7. Foundation Movement
Differential settlement or other structural movements can introduce stresses that were not anticipated in the original design.

⚠️ Important: Not every crack indicates structural failure.

However, new, widening, diagonal, or recurring cracks should be assessed by a qualified structural professional.

Do not conceal cracks before their cause is understood.

🏗️ Remember: Diagnose first. Repair second.

@ETCONP

ኢትዮጵያ ለቱርኩ ስራ ተቋራጭ ያፒ መርከዚ ኩባንያ 213 ነጥብ 7 ሚሊዮን ዶላር እንድትከፍል ተወሰነ!

ለያፒ መርከዚ ኩባንያ እንዲከፈለው ከተወሰነለት ውስጥ 89 ሚሊዮን ዶላር በሰሜን ኢትዮጵያ ጦርነት ወቅት ለደረሱ ጉዳቶች የሚከፈል ነው ተብሏል።

በአዋሽ ኮምቦልቻ ወልደያ ሀራ ገበያ የባቡር መስመር ግንባታ ክርክር ጉዳይ በኢትዮጵያ እና በስራ ተቋራጩ ያፒ መርከዚ መካከል ሲካሄድ የቆየው የክስ ሂደት ተጠናቋል፡፡

ለንደን በሚገኘው የዓለም አቀፍ ግልግል ዳኝነት የተካሄደው ክርክር 392 ኪሎ ሜትር የሚረዝመውን ፕሮጀክት በ1 ነጥብ 7 ቢሊዮን ዶላር ለመገንባት ከኢትዮጵያ ምድር ባቡር ኮርፖሬሽን በተደረገው የስራ ውል አፈጻጸም ላይ አለመግባባት መነሳቱን ተከትሎ ነበር፡፡

ስራ ተቋራጩ ያፒ መርከዚ ኩባንያ የኢትዮጵያ መንግስት ለደረሰበት ጉዳት ከ1 ቢሊዮን ዶላር በላይ ካሳ እንዲከፈለው መጠየቁን ተከትሎ ክርክሩ ሲካሄድ መቆየቱ ተገልጿል፡፡

ኢትዮጵያ የያፒ መርከዚ ክስን ተከትሎ 400 ሚሊዮን ዶላር ካሳ ለመክፈል ጥያቄ አቅርባ እንደነበር ካፒታል ከኢትዮጵያ ምድር ባቡር ኮርፖሬሽን ሰምታለች፡፡

ስማቸው እንዳይጠቀስ የፈለጉ የኮርፖሬሽኑ ከፍተኛ አመራር እንዳሉት ላለፉት አራት ዓመታት በለንደን ሲካሄድ የቆየው ክርክር ባሳለፍነው መስከረም 23 ቀን 2026 ተጠናቋል፡፡

በዚህ ውሳኔ መሰረትም ኢትዮጵያ ለያፒ መርከዚ የዘጠኝ በመቶ ወለድን ጨምሮ 242 ሚሊዮን ዶላር የጉዳት ካሳ እንድትከፍል ተወስኗል።

ከዚህ ውስጥ ኢትዮጵያ ለያፒ መርከዚ ኩባንያ በቅድመ ክፍያ መልኩ ለኩባንያው ከፍላው የነበረው 29 ነጥብ 1 ሚሊዮን ዶላር እንዲመለስላትም ተወስኗል፡፡

Via Capital

@etconp

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👉CALCULATION OF REINFORCEMENT QUANTITY

Foundation: 15 m × 8 m
Perimeter: 2(15 + 8) = 46 m
Main bars: 4
Stirrup size: 15 × 15 cm
Stirrup spacing: 15 cm
Hook length: 7.5 cm each

🔹 1. Longitudinal Bars (Main Steel)

Total length: 46 × 4 = 184 m
12 m bars required: 184 ÷ 12 ≈ 16 bars
With 10% wastage: 18 bars

🔹 2. Stirrups (Ties)
Number: 46 ÷ 0.15 ≈ 307 stirrups
Length per stirrup: approximately 0.70 m
Total length: 307 × 0.70 = 214.9 m
12 m bars required: approximately 18 bars

📌 Note: These are preliminary estimates. Actual quantities depend on cover, bending details, lap lengths, and project specifications.

@ETCONP

🏗️ REINFORCEMENT QUANTITY CALCULATION FOR A FOUNDATION
━━━━━━━━━━━━━━━━━━━━
📌 GIVEN DATA
Foundation Length (L) = 15 m

Foundation Width (B) = 8 m

Number of Longitudinal Bars = 4

Stirrup Size = 15 cm × 15 cm

Stirrup Spacing (S) = 15 cm = 0.15 m

Hook Length = 7.5 cm = 0.075 m

Standard Bar Length = 12 m

Wastage Allowance = 10%
━━━━━━━━━━━━━━━━━━━━
🔹 STEP 1: CALCULATION OF FOUNDATION PERIMETER
Formula:
P = 2 × (L + B)
Substitute the values:
P = 2 × (15 + 8)
P = 2 × 23
✅ Total Perimeter = 46 m
━━━━━━━━━━━━━━━━━━━━
🔹 STEP 2: CALCULATION OF LONGITUDINAL REINFORCEMENT
Number of Longitudinal Bars = 4
Formula:
Total Length = Perimeter × Number of Bars
Total Length = 46 × 4
✅ Total Length = 184 m
📌 Number of 12 m Bars:
Number of Bars = Total Length ÷ Standard Bar Length
Number of Bars = 184 ÷ 12
Number of Bars = 15.33 ≈ 16 bars
Including 10% Wastage:
Required Length = 184 × 1.10
Required Length = 202.40 m
Number of Bars = 202.40 ÷ 12
Number of Bars = 16.87 ≈ 17 bars
✅ Provide 17 bars of 12 m, subject to proper lap lengths, anchorage, cutting arrangements, and detailing.
━━━━━━━━━━━━━━━━━━━━
🔹 STEP 3: CALCULATION OF NUMBER OF STIRRUPS
Given:
Perimeter = 46 m

Spacing = 0.15 m
Formula:
Number of Spaces = Perimeter ÷ Spacing
Number of Spaces = 46 ÷ 0.15
Number of Spaces = 306.67
For a closed perimeter, the number of stirrups depends on the actual layout and spacing arrangement.
✅ Preliminary Estimate = 307 stirrups
Note: Confirm the final number from the reinforcement layout and required spacing at corners and along each side.
━━━━━━━━━━━━━━━━━━━━
🔹 STEP 4: CALCULATION OF LENGTH OF ONE STIRRUP
Given:
Stirrup Length = 15 cm

Stirrup Width = 15 cm

Hook Length = 7.5 cm at each end
Formula:
Length of Stirrup = 2 × (Length + Width) + 2 × Hook Length
Substitute the values:
Length = 2 × (15 + 15) + 2 × 7.5
Length = 60 + 15
Length = 75 cm
Convert to meters:
Length = 75 ÷ 100
✅ Length of One Stirrup = 0.75 m
Note: This is a simplified geometric calculation. Actual cutting length must account for bend geometry, concrete cover, and the applicable reinforcement detailing requirements.
━━━━━━━━━━━━━━━━━━━━
🔹 STEP 5: TOTAL LENGTH OF STIRRUPS
Formula:
Total Length = Number of Stirrups × Length of One Stirrup
Total Length = 307 × 0.75
✅ Total Length = 230.25 m
Number of 12 m Bars:
Number of Bars = 230.25 ÷ 12
Number of Bars = 19.19 ≈ 20 bars
✅ Provide approximately 20 bars of 12 m, before considering additional cutting waste and the final stirrup cutting schedule.
━━━━━━━━━━━━━━━━━━━━
📊 FINAL SUMMARY
✅ Foundation Perimeter = 46 m
✅ Longitudinal Reinforcement = 184 m
✅ Longitudinal Bars = Approximately 17 bars of 12 m, including 10% wastage
✅ Estimated Number of Stirrups = 307
✅ Length of One Stirrup = 0.75 m
✅ Total Stirrup Length = 230.25 m
✅ Stirrup Reinforcement = Approximately 20 bars of 12 m
━━━━━━━━━━━━━━━━━━━━
⚠️ IMPORTANT ENGINEERING NOTE
These calculations are preliminary estimates. Actual reinforcement quantities depend on the structural drawings, concrete cover, bar diameter, lap lengths, anchorage, bending details, and reinforcement spacing requirements.
Follow the approved structural drawings and applicable design standards before ordering or placing reinforcement.

@ETCONp

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