👉AISC 342-22 Seismic Provisions for Evaluation & Retrofit of Existing Structural Steel Buildings"

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@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

👉What Is Pancake Collapse

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@etconp 👇

𝗪𝗵𝗮𝘁 𝗶𝘀 𝗮 𝗣𝗮𝗻𝗰𝗮𝗸𝗲 𝗖𝗼𝗹𝗹𝗮𝗽𝘀𝗲? 🥞🏢

In earthquake engineering, a pancake collapse refers to a catastrophic structural failure where floors of a building collapse one after another, resembling a 𝘀𝘁𝗮𝗰𝗸 𝗼𝗳 𝗽𝗮𝗻𝗰𝗮𝗸𝗲𝘀.

This type of collapse is especially dangerous and has been observed in many devastating earthquakes around the world.

𝗪𝗵𝘆 𝗗𝗼𝗲𝘀 𝗶𝘁 𝗛𝗮𝗽𝗽𝗲𝗻? 🤔

Pancake collapses occur when the vertical load-carrying elements (like columns or walls) fail to support the weight of the upper floors.

Common causes include:

• ❌ Lack of seismic detailing.
• 🛠️ Poor construction practices.
• 📉 Brittle vertical supporting members.
• 🔗 Insufficient connections between walls and slabs.
• 🏢 Soft stories (significantly weaker than upper levels).

𝗧𝗵𝗲 𝗥𝗲𝘀𝘂𝗹𝘁? 💥⬇️

Once one floor gives way, it triggers a 𝗱𝗼𝗺𝗶𝗻𝗼 𝗲𝗳𝗳𝗲𝗰𝘁, with each floor collapsing onto the one below.

Logically, the lower floors lack the capacity to withstand the sudden impact of the falling debris.

This devastating chain reaction drastically reduces the chances of occupant survival and complicates rescue operations.

𝗛𝗼𝘄 𝗖𝗮𝗻 𝗪𝗲 𝗣𝗿𝗲𝘃𝗲𝗻𝘁 𝗜𝘁? 🏗️🛡️

Seismic design aims to avoid sudden and brittle failures.

Some strategies include:

• 🌀 Designing buildings with ductile detailing to absorb seismic energy.

• 🏋️ Using strong column-weak beam designs to prevent column failures.

• 🧱 Ensuring adequate lateral strength through shear walls, bracing, or moment frames.

• 📜 Strictly following seismic building codes and enforcing quality control in construction.

Pancake collapses serve as a stark reminder of the importance of earthquake-resilient design.
↳ By incorporating proper engineering practices, we can minimize risks and save lives. 💡👷

Via Yonatan tadesse PMP

@etconp

👉እስቲ እየተወያየን እንጠያየቅ

💫በቀድሞው EBCS ኮድ መሰረት በሀገራችን ለሚገኙ አካባቢዎች ለይቶ ባስቀመጠው የመሬት መንቀጥቀጥ ልኬት መሰረት የስትራክቸራል ዲዛይን ምዘና (Analysis) ለመሥራት ከግምት ውስጥ እንዲገባ ተደርጎ የተቀመጠው ከፍተኛው የመሬት መንቀጠቀጥ ንዝረት (seismic load factor) ስንት ነው?

📩ሀሳብ መልስ እና አስተያየታቸ ከታች ባለው ሊንክ ወይም መወያያ ግሩፓችን  ላይ ያስቀምጡልን👇

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@etconp

👉የመሬት መንቀጥቀጥ (Seismic load)

🏷የመሬት መንቀጥቀጥ በአንድ የግንባታ ንድፍ (በተለይ በስትራክቸራል ዲዛይን ሥራ) ሂደት ከግምት ውስጥ የሚገባ ከዋናዎቹ ጫናዎች (loads) መካከል ነው።

ይህ የመሬት መንቀጥቀጥ ማባዣ (seismic factor) ለተለየያዩ አካባቢዎች የተቀመጠ ሲሆን ማብዣ ቁጥሩ የሚወሰነው ቀድሞ በነበረው የመሬት መንቀጥቀጥ ታሪክ (Historical records) መሰረት ነው።

በዚህ አግባብ በቀድሞው EBCS ምትክ የተቋቋመው በኢትዮጵያ የልኬት ኤጀንሲ (Ethiopian Standard Agency) በ2015 (እ.ኤ.አ) ለስትራክቸራል ዲዛይን ሥራ ከግምት ውስጥ እንዲገባ ባዘጋጀው የመሬት መንቀጥቀጥ ንዝረትን በወሰነበት CES 160 ልኬት መሰረት ከፍተኛው የመሬት መንቀጥቀጥ ማባዣ አምስት (5) እንዲሆን ያረቀቀ ሲሆን ይህ ልኬት የተሰጣቸው አካባቢዎች፦

🏷1ኛ)፦ በአፋር ክልል፦ አፍዴራ፣ አርጎባ ልዪ፣ አሳይታ፣ አዋሽ ሸለቆ፣ ዳልፋጊ፣ ዱብቲ፣ ዱሌቻ፣ ኤሊዳር፣ ገዋኔ፣ ሀደሌላ፣ ሰመራ፣ ሰሙሮቢና ገላሎ

🏷2ኛ)፦ በአማራ ክልል፦ አንኮበር፣ አንጾኪያ ገምዛ፣ አርቱማ ፉርሲ፣ ባሶና ወራና፣ መንዝ ግሼ፣ ጅሌ ጥሙጋ፣ ቀወት፣ መንዝ ጌራ፣ መንዝ ማማ፣ ሞጃና ወደራ፣ ወይን አምባ፣ ጣርማ በር ናቸው።

⭐️በእነዚህ አካባቢዎች ዙሪያ ያሉ አካባቢዎች የሀገሪቱ ስምጥ ሸለቆ ዞኖች ስለሆኑ ከፍተኛ የመሬት መንቀጥቀጥ ንዝረት የሚስተዋልባቸው ናቸው።

❇️ነገር ግን በዚህ ሰሞን የሚስተዋለው የመሬት መንቀጥቀጥ ንዝረት በሬክታል ስኬል እስከ 5.2 የደረሰ መሆኑ ተዘግቧል።

⏺ይህ ማለት የሀገሪቱ የመሬት መንቀጥቀጥ ንዝረት ልኬት ከተቀመጠው ስታንዳርድ  ያለፈ ሆኖ የተመዘገበ ታሪክ ስለሆነ የስታንዳርድ (standard) ማስተካከያ ሊያስፈልገን ነው ማለት ነው።

💫የ FACEBOOK ገፃችንም ይወዳጁ👇

https://www.facebook.com/ethioconp

👉ሰላም ውድ ቤተሰቦቻችን ኣዲስ የ ETABS በ ኣማርኛ ቲቶርያል ከ introduction ጀምሮ Analysis እና Design ኣካተን ምርጥ ቪድዮ ማዘጋጀታችን ይታወሳል።

🫵እንሆ ዛሬ ክፍል 2 ጭነንላቹዋል👇

https://youtu.be/x6Q0_TKO6d8

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@etconp 👇

Bid Process Cycle

1. Project Identification
- The project owner recognizes the need for construction.
- Preparation of project scope, timeline, and objectives follows.

2. Preparation of Bid Documents
- The owner/consultant creates a Request for Proposal (RFP) or Request for Tender (RFT).
- Involves project specifications, drawings, contract terms, and submission guidelines.

3. Advertisement/Invitation to Bid
- The project is publicly advertised or sent to prequalified contractors.
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- A meeting is conducted to clarify the project scope.
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- Interested contractors prepare and submit their bids.
- Submissions include cost estimates, construction schedules, and technical and financial qualifications.

6. Bid Opening
- Bids are transparently opened, either publicly or privately based on project requirements.

7. Bid Evaluation
- The owner assesses bids using specific criteria:
- Price competitiveness
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8. Contractor Selection
- The most suitable contractor is chosen, balancing cost, quality, and timeline considerations.

9. Negotiation
- The project owner and selected contractor align on terms.
- Finalize contract details.

10. Award
- The selected contractor receives the contract award.

11. Notice to Proceed (NTP)
- The contractor is issued a formal Notice to Proceed, authorizing work commencement on the project.

@etconp

👉አዲሱ የሥራ አመራር ቦርድ

💫የኢትዮጵያ ኮንስትራክሽን ሥራ ተቋራጮች ማህበር

https://t.me/ETCONpWORK

@etconp