setback 2017 aug.pdf
9 MB
👉ስለ ሴት ባክ የወጡ አዲስ ሕግጋት
💫Set Back Laws
🚧For more information click this Link Below And Subscribe Our YouTube Channel👇
https://youtube.com/@ethiopianconstruction7?si=ils307xXQQpIdCwG
@etconp
💫Set Back Laws
🚧For more information click this Link Below And Subscribe Our YouTube Channel👇
https://youtube.com/@ethiopianconstruction7?si=ils307xXQQpIdCwG
@etconp
❤4
👉Column Construction Process in point form, based on the infographic you shared:
🏗️ Column Construction Steps
1. Reinforcement
- Place longitudinal steel bars (rebar).
- Fix ties or stirrups at regular spacing.
- Secure with binding wire.
- Ensure proper anchorage into the concrete footing or pedestal.
2. Formwork
- Assemble formwork panels (wooden or metal).
- Support with props or braces for stability.
- Tighten using clamps or tensioners to prevent leakage.
3. Concrete Pouring
- Pour structural concrete into the formwork.
- Use a conduit tube or discharge pipe for controlled placement.
- Apply a concrete vibrator to remove air voids and ensure compaction.
4. Formwork Removal
- Carefully dismantle formwork panels after concrete has set.
- Expose the finished reinforced concrete column.
- Retain the concrete base or pedestal for support.
🔷 COLUMN CONSTRUCTION PROCESS – STEP BY STEP GUIDE 🔷
⏺Understanding how a reinforced concrete column is built is essential for every civil engineering enthusiast👷♂️
🏷This visual explains the complete process in 4 key stages:
1️⃣ Reinforcement of steel bars
2️⃣ Formwork setup (shuttering)
3️⃣ Concrete pouring & compaction
4️⃣ Formwork removal (final column ready) Each step plays a crucial role in ensuring strength, durability, and structural stability.
📌 Save this post for quick revision
📌 Share with fellow engineers
📌 Read captions for detailed understanding
🚧For more information click this Link Below And Subscribe Our YouTube Channel👇
https://youtube.com/@ethiopianconstruction7?si=ils307xXQQpIdCwG
@etconp
🏗️ Column Construction Steps
1. Reinforcement
- Place longitudinal steel bars (rebar).
- Fix ties or stirrups at regular spacing.
- Secure with binding wire.
- Ensure proper anchorage into the concrete footing or pedestal.
2. Formwork
- Assemble formwork panels (wooden or metal).
- Support with props or braces for stability.
- Tighten using clamps or tensioners to prevent leakage.
3. Concrete Pouring
- Pour structural concrete into the formwork.
- Use a conduit tube or discharge pipe for controlled placement.
- Apply a concrete vibrator to remove air voids and ensure compaction.
4. Formwork Removal
- Carefully dismantle formwork panels after concrete has set.
- Expose the finished reinforced concrete column.
- Retain the concrete base or pedestal for support.
🔷 COLUMN CONSTRUCTION PROCESS – STEP BY STEP GUIDE 🔷
⏺Understanding how a reinforced concrete column is built is essential for every civil engineering enthusiast👷♂️
🏷This visual explains the complete process in 4 key stages:
1️⃣ Reinforcement of steel bars
2️⃣ Formwork setup (shuttering)
3️⃣ Concrete pouring & compaction
4️⃣ Formwork removal (final column ready) Each step plays a crucial role in ensuring strength, durability, and structural stability.
📌 Save this post for quick revision
📌 Share with fellow engineers
📌 Read captions for detailed understanding
🚧For more information click this Link Below And Subscribe Our YouTube Channel👇
https://youtube.com/@ethiopianconstruction7?si=ils307xXQQpIdCwG
@etconp
❤16
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📍Address:Addis Ababa
❤1🥰1
👉Dumpy Level
🔧 Components
- Integrated Collimator – helps in rough targeting.
- Focusing Knob – sharpens the image.
- Telescope with Objective Lens – main viewing system.
- Eyepiece Lens – adjusts crosshair visibility for the eye.
- Compensator – ensures automatic leveling inside the instrument.
- Spirit Level – checks horizontal alignment.
- Horizontal Drive Screw – fine adjustment for precise targeting.
- Horizontal Circle – measures angles in degrees or gons.
- Base Plate – supports the instrument on the tripod.
🏗️ Uses in Construction
- Establishes horizontal levels for foundations, roads, and pipelines.
- Measures height differences between points on site.
- Ensures accuracy in excavation and filling.
- Used for surveying and alignment in civil engineering projects.
👷 Practical Notes
- Mounted on a tripod for stability.
- Requires calibration and leveling before use.
- Operator reads measurements on a staff/rod placed at target points.
- Commonly used in earthworks, drainage, and structural layout.
🔧 Dumpy Level – Essential Surveying Instrument Explained
⏺A Dumpy Level is one of the most important tools in surveying, used to determine accurate horizontal levels on construction sites.
⏺It ensures precision in leveling for foundations, roads, drainage systems, and structural alignment.
📌 Key Components: 🔸 Integrated Collimator – Helps in rough targeting
🔸 Telescope – Provides clear sight of the staff
🔸 Focusing Knob – Sharpens the image
🔸 Compensator – Maintains level automatically
🔸 Horizontal Drive Screw – Enables fine horizontal adjustment
🔸 Horizontal Circle – Measures angles in degrees
🔸 Spirit Level – Ensures the instrument is perfectly leveled
🔸 Base Plate – Supports and stabilizes the device
👷♂️ Widely used in construction and civil engineering projects, the dumpy level improves accuracy, reduces errors, and ensures quality work on-site.
📍 Pro Tip: Always check the bubble in the spirit level before taking readings for best accuracy!
#CivilEngineering #Surveying #DumpyLevel #ConstructionTools #Leveling #EngineeringLife #SiteWork #CivilTechTime #EngineeringStudents #SurveyEquipment #ConstructionSite #Infrastructure #FieldWork #EngineeringBasics #LearnEngineering
@etconp
🔧 Components
- Integrated Collimator – helps in rough targeting.
- Focusing Knob – sharpens the image.
- Telescope with Objective Lens – main viewing system.
- Eyepiece Lens – adjusts crosshair visibility for the eye.
- Compensator – ensures automatic leveling inside the instrument.
- Spirit Level – checks horizontal alignment.
- Horizontal Drive Screw – fine adjustment for precise targeting.
- Horizontal Circle – measures angles in degrees or gons.
- Base Plate – supports the instrument on the tripod.
🏗️ Uses in Construction
- Establishes horizontal levels for foundations, roads, and pipelines.
- Measures height differences between points on site.
- Ensures accuracy in excavation and filling.
- Used for surveying and alignment in civil engineering projects.
👷 Practical Notes
- Mounted on a tripod for stability.
- Requires calibration and leveling before use.
- Operator reads measurements on a staff/rod placed at target points.
- Commonly used in earthworks, drainage, and structural layout.
🔧 Dumpy Level – Essential Surveying Instrument Explained
⏺A Dumpy Level is one of the most important tools in surveying, used to determine accurate horizontal levels on construction sites.
⏺It ensures precision in leveling for foundations, roads, drainage systems, and structural alignment.
📌 Key Components: 🔸 Integrated Collimator – Helps in rough targeting
🔸 Telescope – Provides clear sight of the staff
🔸 Focusing Knob – Sharpens the image
🔸 Compensator – Maintains level automatically
🔸 Horizontal Drive Screw – Enables fine horizontal adjustment
🔸 Horizontal Circle – Measures angles in degrees
🔸 Spirit Level – Ensures the instrument is perfectly leveled
🔸 Base Plate – Supports and stabilizes the device
👷♂️ Widely used in construction and civil engineering projects, the dumpy level improves accuracy, reduces errors, and ensures quality work on-site.
📍 Pro Tip: Always check the bubble in the spirit level before taking readings for best accuracy!
#CivilEngineering #Surveying #DumpyLevel #ConstructionTools #Leveling #EngineeringLife #SiteWork #CivilTechTime #EngineeringStudents #SurveyEquipment #ConstructionSite #Infrastructure #FieldWork #EngineeringBasics #LearnEngineering
@etconp
❤5🔥5
👉 INTERCON Construction Chemicals
● Concrete Admixtures
● Bonding Agents
● Waterproofings
● Wall Putty, Prime Coat
● Concrete Repair Mortar
● Floor hardener, Epoxy
● Grout, Self-level mortar
● Quartz paint, Contextra
● Tile Adhesive & Tile Joint Fillers
● Geotextiles and other construction chemicals and materials
☎️ Tel: 0961955555
🔹 Address 1: Signal road, around
Dinberwa Hospital
🔹 Addres 2: Wellosefer, Infront of
Dani Plaza
● Concrete Admixtures
● Bonding Agents
● Waterproofings
● Wall Putty, Prime Coat
● Concrete Repair Mortar
● Floor hardener, Epoxy
● Grout, Self-level mortar
● Quartz paint, Contextra
● Tile Adhesive & Tile Joint Fillers
● Geotextiles and other construction chemicals and materials
☎️ Tel: 0961955555
🔹 Address 1: Signal road, around
Dinberwa Hospital
🔹 Addres 2: Wellosefer, Infront of
Dani Plaza
❤3
👉Concrete Column
🚧Material: Reinforced concrete with longitudinal bars and stirrups.
- Dimensions: 25 cm × 25 cm cross-section, stirrups spaced at 20 cm, 4 cm cover.
- Strengths:
- High compression strength.
- More massive, stable under heavy loads.
- Limitations:
- Heavier structure.
- Slower installation due to curing time.
- Foundation: Embedded in footing.
🔩 Metal Column
- Material: Steel HEB section with base plate, welds, and anchor bolts.
- Strengths:
- Lightweight compared to concrete.
- High resistance to axial loads.
- Quick installation.
- Limitations:
- Susceptible to corrosion if not protected.
- Requires precision welding and bolting.
- Foundation: Fixed with base plate and anchor bolts.
⚖️ Common Feature
- Both work in compression to resist axial loads.
🚧Concrete Column vs Metal Column 🏗️
⏺Understanding the difference between concrete and metal (steel) columns is essential in structural design.
⏺Concrete columns are known for their high compression strength and durability, making them ideal for heavy load-bearing structures.
⏺They include reinforcement bars and stirrups to enhance strength and stability.
⏺On the other hand, metal (steel) columns are lightweight, quick to install, and provide excellent strength-to-weight ratio.
⏺With base plates and anchor bolts, they are widely used in modern construction where speed and flexibility are required.
🏷Both types work effectively in compression, but the choice depends on project requirements, cost, and construction time.
🚧For more information click this Link Below And Subscribe Our YouTube Channel👇
https://youtube.com/@ethiopianconstruction7?si=ils307xXQQpIdCwG
@etconp
🚧Material: Reinforced concrete with longitudinal bars and stirrups.
- Dimensions: 25 cm × 25 cm cross-section, stirrups spaced at 20 cm, 4 cm cover.
- Strengths:
- High compression strength.
- More massive, stable under heavy loads.
- Limitations:
- Heavier structure.
- Slower installation due to curing time.
- Foundation: Embedded in footing.
🔩 Metal Column
- Material: Steel HEB section with base plate, welds, and anchor bolts.
- Strengths:
- Lightweight compared to concrete.
- High resistance to axial loads.
- Quick installation.
- Limitations:
- Susceptible to corrosion if not protected.
- Requires precision welding and bolting.
- Foundation: Fixed with base plate and anchor bolts.
⚖️ Common Feature
- Both work in compression to resist axial loads.
🚧Concrete Column vs Metal Column 🏗️
⏺Understanding the difference between concrete and metal (steel) columns is essential in structural design.
⏺Concrete columns are known for their high compression strength and durability, making them ideal for heavy load-bearing structures.
⏺They include reinforcement bars and stirrups to enhance strength and stability.
⏺On the other hand, metal (steel) columns are lightweight, quick to install, and provide excellent strength-to-weight ratio.
⏺With base plates and anchor bolts, they are widely used in modern construction where speed and flexibility are required.
🏷Both types work effectively in compression, but the choice depends on project requirements, cost, and construction time.
🚧For more information click this Link Below And Subscribe Our YouTube Channel👇
https://youtube.com/@ethiopianconstruction7?si=ils307xXQQpIdCwG
@etconp
❤7
👉Home for Humanity (ቤት ለሰብአዊነት)
🚧የድንገተኛ ግዜ መጠለያዎች ንድፍ በነጻ የቀረቡበት ድረ -ገጽ
💫ይህ በነጻ ሊደረስበት የሚችል ድረ-ገጽ የተመረጡ የድንገተኛ ጊዜ መጠለያ ንድፎችን (Emergency Shelter Designs) የሚያቀርብ ሲሆን፣ እነዚህም ንድፎች ወደ ስዕላዊ መግለጫዎች እና ደረጃ በደረጃ የሚከናወኑ የመገጣጠሚያ መመሪያዎች ተተርጉመዋል።
"Home for Humanity" በኢቲኤች ዙሪክ (ETH Zurich) የፕሮፌሰር ሞሞዮ ካይጂማ (የአርክቴክቸር ቢሄቪየሮሎጂ ሊቀመንበር) እና የፕሮፌሰር ሎረንት ስታለር (የአርክቴክቸር ቲዎሪ ሊቀመንበር) የትብብር የምርምር ፕሮጀክት ነው።
የፕሮጀክቱ ቡድን ከ1950ዎቹ ጀምሮ እስካሁን ድረስ ያሉ ከ150 በላይ የድንገተኛ ጊዜ መጠለያዎችን የመረመረ ሲሆን፣ እነዚህንም በዲጂታል ፕላትፎርም አማካኝነት በሥርዓት አደራጅቶ ለሁሉም ክፍት እንዲሆኑ አድርጓል።
"Home for Humanity" በ "Fashion Girls for Humanity" የሚደገፍ ሲሆን፣ ከዓለም አቀፍ አጋሮች ለምሳሌ "Peace Winds Japan" እና "ዓለም አቀፍ የስደተኞች ድርጅት (IOM)" ጋር በመተባበር የበለጸገ ነው።
ድረ-ገጹን በሚከተለው ማስፈንጠርያ ተጠቅመው ይመልከቱ👇
https://diyhomes.ai/
Via Department Architektu
@etconp
🚧የድንገተኛ ግዜ መጠለያዎች ንድፍ በነጻ የቀረቡበት ድረ -ገጽ
💫ይህ በነጻ ሊደረስበት የሚችል ድረ-ገጽ የተመረጡ የድንገተኛ ጊዜ መጠለያ ንድፎችን (Emergency Shelter Designs) የሚያቀርብ ሲሆን፣ እነዚህም ንድፎች ወደ ስዕላዊ መግለጫዎች እና ደረጃ በደረጃ የሚከናወኑ የመገጣጠሚያ መመሪያዎች ተተርጉመዋል።
"Home for Humanity" በኢቲኤች ዙሪክ (ETH Zurich) የፕሮፌሰር ሞሞዮ ካይጂማ (የአርክቴክቸር ቢሄቪየሮሎጂ ሊቀመንበር) እና የፕሮፌሰር ሎረንት ስታለር (የአርክቴክቸር ቲዎሪ ሊቀመንበር) የትብብር የምርምር ፕሮጀክት ነው።
የፕሮጀክቱ ቡድን ከ1950ዎቹ ጀምሮ እስካሁን ድረስ ያሉ ከ150 በላይ የድንገተኛ ጊዜ መጠለያዎችን የመረመረ ሲሆን፣ እነዚህንም በዲጂታል ፕላትፎርም አማካኝነት በሥርዓት አደራጅቶ ለሁሉም ክፍት እንዲሆኑ አድርጓል።
"Home for Humanity" በ "Fashion Girls for Humanity" የሚደገፍ ሲሆን፣ ከዓለም አቀፍ አጋሮች ለምሳሌ "Peace Winds Japan" እና "ዓለም አቀፍ የስደተኞች ድርጅት (IOM)" ጋር በመተባበር የበለጸገ ነው።
ድረ-ገጹን በሚከተለው ማስፈንጠርያ ተጠቅመው ይመልከቱ👇
https://diyhomes.ai/
Via Department Architektu
@etconp
❤7👍4
👉Types of Levelling
📐 Differential Levelling
- Used when instrument height changes.
- Staff readings taken at multiple points (A, B, C, D).
- Ensures accurate elevation differences across long distances.
📏 Simple Levelling
- Instrument placed midway between two points.
- Equal shot distances for accuracy.
- Readings taken in sequence to determine relative height.
📊 Trigonometric Levelling
- Uses angles and distances measured with instruments.
- Height differences calculated using trigonometric formulas.
- Useful for tall structures or inaccessible points.
🌉 Reciprocal Levelling
- Applied across obstacles like rivers or valleys.
- Readings taken from both sides to minimize errors.
- Final level determined by averaging differences.
🎨 Color Legend (for diagrams)
- Orange → Instrument
- Red line → Ground profile
- Dark purple → Text labels
- Light blue → Staff & sight lines
- Pale yellow → Special highlighted areas
🏷Levelling is a fundamental surveying process used to determine the elevation of different points on the earth’s surface.
🔴 Differential Levelling
Used to find the difference in elevation between multiple points when the ground is uneven. It involves shifting the instrument and taking multiple readings.
🔴 Simple Levelling
The most basic method where the instrument is placed between two points to determine height difference with equal sight distances.
🔴 Trigonometric Levelling
Used for measuring elevations using angles and distances, especially useful in hilly terrains and long distances.
🔴 Reciprocal Levelling
Applied when measuring across obstacles like rivers to eliminate errors caused by curvature, refraction, and instrument misalignment.
💡 Each method serves a unique purpose depending on terrain, accuracy required, and site conditions—making levelling an essential skill in surveying and construction.
#CivilEngineering #Surveying #Levelling #DifferentialLevelling #SimpleLevelling #TrigonometricLevelling #ReciprocalLevelling #ConstructionBasics #EngineeringStudents #SiteEngineering #CivilTechTime #EngineeringGraphics #SurveyingTechniques #LearnCivil #Infrastructure #FieldWork #EngineeringKnowledge
@etconp
📐 Differential Levelling
- Used when instrument height changes.
- Staff readings taken at multiple points (A, B, C, D).
- Ensures accurate elevation differences across long distances.
📏 Simple Levelling
- Instrument placed midway between two points.
- Equal shot distances for accuracy.
- Readings taken in sequence to determine relative height.
📊 Trigonometric Levelling
- Uses angles and distances measured with instruments.
- Height differences calculated using trigonometric formulas.
- Useful for tall structures or inaccessible points.
🌉 Reciprocal Levelling
- Applied across obstacles like rivers or valleys.
- Readings taken from both sides to minimize errors.
- Final level determined by averaging differences.
🎨 Color Legend (for diagrams)
- Orange → Instrument
- Red line → Ground profile
- Dark purple → Text labels
- Light blue → Staff & sight lines
- Pale yellow → Special highlighted areas
🏷Levelling is a fundamental surveying process used to determine the elevation of different points on the earth’s surface.
🔴 Differential Levelling
Used to find the difference in elevation between multiple points when the ground is uneven. It involves shifting the instrument and taking multiple readings.
🔴 Simple Levelling
The most basic method where the instrument is placed between two points to determine height difference with equal sight distances.
🔴 Trigonometric Levelling
Used for measuring elevations using angles and distances, especially useful in hilly terrains and long distances.
🔴 Reciprocal Levelling
Applied when measuring across obstacles like rivers to eliminate errors caused by curvature, refraction, and instrument misalignment.
💡 Each method serves a unique purpose depending on terrain, accuracy required, and site conditions—making levelling an essential skill in surveying and construction.
#CivilEngineering #Surveying #Levelling #DifferentialLevelling #SimpleLevelling #TrigonometricLevelling #ReciprocalLevelling #ConstructionBasics #EngineeringStudents #SiteEngineering #CivilTechTime #EngineeringGraphics #SurveyingTechniques #LearnCivil #Infrastructure #FieldWork #EngineeringKnowledge
@etconp
❤6👍2🔥1
👉Different Types of Roofs
💫Choosing the right roof is essential for both structural strength and aesthetic appeal. This guide showcases various roof types used in modern construction, each designed for specific needs and conditions.
🔸 Shed Roof – Simple, cost-effective, and easy to construct
🔸 Gable Roof – Most common design with good ventilation
🔸 Hip Roof – Strong and stable, ideal for harsh weather
🔸 Half-Hip Roof – Combines style with extra interior space
🔸 Cross-Gable Roof – Perfect for complex and modern layouts
🔸 Vaulted Roof – Elegant design used in premium structures
🔸 Tent Roof – Symmetrical and suitable for compact designs
🔸 Gambrel Roof – Double slope design for more attic space
📌 Each roof type offers unique benefits in terms of durability, cost, space utilization, and design flexibility. Select wisely based on your project requirements!
#CivilEngineering #RoofTypes #Construction #BuildingDesign #Architecture #CivilTechTime #EngineeringBasics #SiteKnowledge #ConstructionLife #StructuralDesign #HomeDesign #Builders #EngineeringWorld #LearningCivil #DesignInspiration
@etconp
💫Choosing the right roof is essential for both structural strength and aesthetic appeal. This guide showcases various roof types used in modern construction, each designed for specific needs and conditions.
🔸 Shed Roof – Simple, cost-effective, and easy to construct
🔸 Gable Roof – Most common design with good ventilation
🔸 Hip Roof – Strong and stable, ideal for harsh weather
🔸 Half-Hip Roof – Combines style with extra interior space
🔸 Cross-Gable Roof – Perfect for complex and modern layouts
🔸 Vaulted Roof – Elegant design used in premium structures
🔸 Tent Roof – Symmetrical and suitable for compact designs
🔸 Gambrel Roof – Double slope design for more attic space
📌 Each roof type offers unique benefits in terms of durability, cost, space utilization, and design flexibility. Select wisely based on your project requirements!
#CivilEngineering #RoofTypes #Construction #BuildingDesign #Architecture #CivilTechTime #EngineeringBasics #SiteKnowledge #ConstructionLife #StructuralDesign #HomeDesign #Builders #EngineeringWorld #LearningCivil #DesignInspiration
@etconp
❤9
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አድራሻ፦ ቁ 1.መርካቶ
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ጥራትና ታማኝነት መለያችን ነው።
ታምራት ፕሌት እና ጄ ቦልት አቅራቢ
❤2
👉Master the concept of Reduced Level (RL) calculation using Dumpy Level with this easy and practical method 📐
🔸 Formula: RL = HI – Staff Reading
🔸 Helps in determining accurate ground levels in surveying
🔸 Essential for construction layout, road works, and site development
📍 In this visual
✔️ Benchmark (BM) is taken as reference
✔️ Height of Instrument (HI) calculated
✔️ Staff readings subtracted to get RL at different points
✔️ Clear step-by-step understanding with real field illustration
💡 This method ensures precision in leveling work and avoids costly errors on site.
💫Leveling & RL Calculation
- Benchmark (BM): A fixed reference point with a known RL (e.g., 50.00 m).
- Height of Instrument (HI): Calculated as BM RL + Back-sight reading.
- Example: BM = 50.00 m, Back-sight = 1.20 → HI = 51.20 m.
- Reduced Level (RL): Found using formula:
⏺RL = HI - Staff Reading
- Staff Readings: Taken at different points on terrain (e.g., 1.200, 1.750, 2.500, 3.200).
- Example Calculation:
- HI = 51.20 m
- Staff Reading = 1.75 m
- RL = 51.20 – 1.75 = 49.45 m
- Types of Sight:
- Back-sight (BS): Reading on BM or known RL point.
- Fore-sight (FS): Reading on unknown point to determine RL.
- Purpose: Ensures accurate determination of elevations across uneven terrain for construction and surveying.
- Distances: Terrain marked at intervals (e.g., 50 m, 60 m) to show leveling across sections.
#CivilEngineering #Surveying #DumpyLevel #Leveling #ConstructionBasics #SiteEngineering #EngineeringStudent #CivilTechTime #EngineeringConcepts #FieldWork #SurveyTools #LearnEngineering #ConstructionSite #EngineeringLife
@etconp
🔸 Formula: RL = HI – Staff Reading
🔸 Helps in determining accurate ground levels in surveying
🔸 Essential for construction layout, road works, and site development
📍 In this visual
✔️ Benchmark (BM) is taken as reference
✔️ Height of Instrument (HI) calculated
✔️ Staff readings subtracted to get RL at different points
✔️ Clear step-by-step understanding with real field illustration
💡 This method ensures precision in leveling work and avoids costly errors on site.
💫Leveling & RL Calculation
- Benchmark (BM): A fixed reference point with a known RL (e.g., 50.00 m).
- Height of Instrument (HI): Calculated as BM RL + Back-sight reading.
- Example: BM = 50.00 m, Back-sight = 1.20 → HI = 51.20 m.
- Reduced Level (RL): Found using formula:
⏺RL = HI - Staff Reading
- Staff Readings: Taken at different points on terrain (e.g., 1.200, 1.750, 2.500, 3.200).
- Example Calculation:
- HI = 51.20 m
- Staff Reading = 1.75 m
- RL = 51.20 – 1.75 = 49.45 m
- Types of Sight:
- Back-sight (BS): Reading on BM or known RL point.
- Fore-sight (FS): Reading on unknown point to determine RL.
- Purpose: Ensures accurate determination of elevations across uneven terrain for construction and surveying.
- Distances: Terrain marked at intervals (e.g., 50 m, 60 m) to show leveling across sections.
#CivilEngineering #Surveying #DumpyLevel #Leveling #ConstructionBasics #SiteEngineering #EngineeringStudent #CivilTechTime #EngineeringConcepts #FieldWork #SurveyTools #LearnEngineering #ConstructionSite #EngineeringLife
@etconp
❤9
👉IMPORTANT NOTE FOR CIVIL ENGINEERS
💫Here are essential and practical notes every Civil Engineer should know—refined for site work, exams, and professional practice .
📌 1. Always Understand Drawings First
Study structural, architectural, and MEP drawings before starting work
Check:
Dimensions
Levels
Reinforcement details
Never build based on assumptions
📐 2. Accuracy in Measurement is Critical
“Small error = Big failure”
Always verify:
Layout with surveying tools
Levels using leveling instruments
Recheck before concreting
🧱 3. Concrete is the Heart of Construction
Maintain correct mix ratio & water-cement ratio
Ensure:
Proper mixing
Adequate compaction (no honeycombing)
Timely placing
⭐️Golden Rule:
Bad concrete = Weak structure
💧 4. Never Compromise on Curing
Curing improves:
Strength
Durability
Crack resistance
Minimum:
7 days (basic)
14–28 days (recommended)
⏺Most site failures come from poor curing
🏠 5. Foundation Determines Stability
Always conduct soil investigation
Design based on:
Safe bearing capacity
Groundwater condition
⏺Poor foundation = Structural failure risk
🧰 6. Right Material = Strong Structure
Check quality of:
Cement (fresh, no lumps)
Sand (clean, well graded)
Aggregate (proper size)
Steel (no rust, correct grade)
⏺Never use substandard materials to cut cost
📊 7. Load Understanding is Essential
Structures must resist:
Dead load
Live load
Wind load
Earthquake load
⏺Design guidelines often follow standards
🚧 8. Site Supervision is Key
Engineer must:
Monitor workmanship
Ensure correct procedures
Guide workers
⏺Good supervision = Quality construction
⚠️ 9. Safety is Non-Negotiable
Always enforce PPE:
Helmet
Safety boots
Reflective vest
Check:
Scaffolding
Machinery
Electrical connections
⏺Safety saves lives and cost
🌍 10. Soil Knowledge is a Must
Understand:
Soil type (clay, sand, silt)
Compaction
Settlement behavior
🚧Test before construction (never guess soil capacity)
📅 11. Time, Cost, Quality – The 3 Pillars
Every project must balance:
Time (schedule)
Cost (budget)
Quality (standards)
⏺Poor planning leads to delays and losses
📑 12. Documentation & Records
Keep:
Daily site reports
Material records
Test results
Helps in:
Claims
Quality control
Project tracking
🔧 13. Common Mistakes to Avoid
Ignoring drawings
Poor compaction of concrete
Inadequate curing
Wrong reinforcement placement
Lack of supervision
🚀 Final Professional Tips
Always ask questions on site
Learn from experienced workers Stay updated with modern tools (e.g., Total Station) Maintain integrity—never compromise quality for profit.
@etconp
💫Here are essential and practical notes every Civil Engineer should know—refined for site work, exams, and professional practice .
📌 1. Always Understand Drawings First
Study structural, architectural, and MEP drawings before starting work
Check:
Dimensions
Levels
Reinforcement details
Never build based on assumptions
📐 2. Accuracy in Measurement is Critical
“Small error = Big failure”
Always verify:
Layout with surveying tools
Levels using leveling instruments
Recheck before concreting
🧱 3. Concrete is the Heart of Construction
Maintain correct mix ratio & water-cement ratio
Ensure:
Proper mixing
Adequate compaction (no honeycombing)
Timely placing
⭐️Golden Rule:
Bad concrete = Weak structure
💧 4. Never Compromise on Curing
Curing improves:
Strength
Durability
Crack resistance
Minimum:
7 days (basic)
14–28 days (recommended)
⏺Most site failures come from poor curing
🏠 5. Foundation Determines Stability
Always conduct soil investigation
Design based on:
Safe bearing capacity
Groundwater condition
⏺Poor foundation = Structural failure risk
🧰 6. Right Material = Strong Structure
Check quality of:
Cement (fresh, no lumps)
Sand (clean, well graded)
Aggregate (proper size)
Steel (no rust, correct grade)
⏺Never use substandard materials to cut cost
📊 7. Load Understanding is Essential
Structures must resist:
Dead load
Live load
Wind load
Earthquake load
⏺Design guidelines often follow standards
🚧 8. Site Supervision is Key
Engineer must:
Monitor workmanship
Ensure correct procedures
Guide workers
⏺Good supervision = Quality construction
⚠️ 9. Safety is Non-Negotiable
Always enforce PPE:
Helmet
Safety boots
Reflective vest
Check:
Scaffolding
Machinery
Electrical connections
⏺Safety saves lives and cost
🌍 10. Soil Knowledge is a Must
Understand:
Soil type (clay, sand, silt)
Compaction
Settlement behavior
🚧Test before construction (never guess soil capacity)
📅 11. Time, Cost, Quality – The 3 Pillars
Every project must balance:
Time (schedule)
Cost (budget)
Quality (standards)
⏺Poor planning leads to delays and losses
📑 12. Documentation & Records
Keep:
Daily site reports
Material records
Test results
Helps in:
Claims
Quality control
Project tracking
🔧 13. Common Mistakes to Avoid
Ignoring drawings
Poor compaction of concrete
Inadequate curing
Wrong reinforcement placement
Lack of supervision
🚀 Final Professional Tips
Always ask questions on site
Learn from experienced workers Stay updated with modern tools (e.g., Total Station) Maintain integrity—never compromise quality for profit.
@etconp
❤12👍11
🏗 🏢የኮንስትራክሽን ሥራ አመራር ስልቶች (Construction Management Techniques)
▪️▪️▪️▪️▪️▪️
➀ እቅድ እና የጊዜ ሰሌዳ (Planning & Scheduling)
▪️▪️▪️▪️▪️▪️
▶️ የሥራ ክፍፍል መዋቅር (WBS): ፕሮጀክቱን ወደ ትናንሽና ሊተገበሩ ወደሚችሉ ክፍሎች መከፋፈል።
▶️ ጋንት ቻርት (Gantt Charts): የሥራ ሂደትን በግራፍ ማሳያ።
📌ክሪቲካል ፓዝ ሜተድ (CPM): ወሳኝ የሆኑ የሥራ መስመሮችን መለየት።
▶️ የማይልስቶን እቅድ (Milestone Planning): ዋና ዋና ግቦችን ማቀድ።
📌 ጥቅሙ: ፕሮጀክቱ በታቀደለት ጊዜ እንዲጠናቀቅ ያደርጋል።
⓶ የወጪ አስተዳደር (Cost Management)
▪️▪️▪️▪️▪️
ዝርዝር የወጪ ግምት: እያንዳንዱ ሥራ ምን ያህል ወጪ እንደሚጠይቅ ማስላት።
▶️ የበጀት መድብ: ለተለያዩ የሥራ ክፍሎች በጀት መመደብ።
▶️ የገንዘብ ፍሰት ትንበያ (Cash flow): የገንዘብ ገቢና ወጪን መገመት።
▶️ የወጪ ልዩነት ትንተና: ከበጀት በላይ እንዳይወጣ መቆጣጠር።
🔘 ጥቅሙ: ካልተገባ ብክነትና ከመጠን ያለፈ ወጪ ይከላከላል።
➂ የጥራት አስተዳደር (Quality Management)
▪️▪️▪️▪️▪️
▶️ የጥራት ማረጋገጫ (QA): ሂደቱ ትክክለኛ መሆኑን ማረጋገጥ።
▶️ የጥራት ቁጥጥር (QC): ውጤቱ ደረጃውን የጠበቀ መሆኑን መፈተሽ።
▶️ የጥሬ ዕቃ ፍተሻና ምርመራ: ጥራታቸው የተረጋገጠ ግብዓቶችን መጠቀም።
▶️ ደረጃዎችን ማክበር: የግንባታ ሕጎችንና ዝርዝር መመሪያዎችን መከተል።
🔘 ጥቅሙ: ጠንካራና ደህንነቱ የተጠበቀ ግንባታ እንዲኖር ያደርጋል።
⓸ የጊዜ አስተዳደር (Time Management)
▪️▪️▪️▪️▪️
▶️ የሥራዎች ቅደም ተከተል: የትኛው ሥራ ቀድሞ መከናወን እንዳለበት መለየት።
▶️ የሀብት ማመጣጠን (Resource leveling): የሰው ኃይልና መሣሪያን በጊዜው ማከፋፈል።
▶️ የሂደት ክትትል: ሥራው በምን ደረጃ ላይ እንዳለ መከታተል።
▶️ የመዘግየት ትንተና: ለምን እንደዘገየ መለየትና መፍትሔ መፈለግ።
🔘 ጥቅሙ: ከጊዜ ሰሌዳ መውጣትን (Overrun) ያስቀራል።
⓹ የአደጋ ስጋት አስተዳደር (Risk Management)
▪️▪️▪️▪️▪️
▶️ አደጋን መለየት: ሊያጋጥሙ የሚችሉ ችግሮችን አስቀድሞ ማወቅ።
▶️ አደጋን መገምገም: የችግሩን ክብደትና የመከሰት ዕድል መመዘን።
▶️ የመቀነሻ እቅድ: ችግሩን ለመቀነስ ወይም ለማስወገድ ማቀድ።
▶️ የመጠባበቂያ ክምችት: ለአደጋ ጊዜ የሚሆን ገንዘብ ወይም ጊዜ መያዝ።
🔘 ጥቅሙ: ያልተጠበቁ እንቅፋቶችን ይቀንሳል።
⓺ የሀብት አስተዳደር (Resource Management)
▪️▪️▪️▪️▪️
▶️ የሰው ኃይል እቅድ: አስፈላጊ የሆኑ ሠራተኞችን ማደራጀት።
▶️ የማሽነሪዎች መድብ: መሣሪያዎችን ለሚፈለገው ሥራ ማከፋፈል።
▶️ የቁሳቁስ አቅርቦት እቅድ: የግንባታ ዕቃዎች የሚገዙበትን ጊዜ መወሰን።
▶️ የምርታማነት ክትትል: የሥራ ቅልጥፍናን መለካት።
🔘 ጥቅሙ በግንባታ ቦታ ላይ ያለውን ብክነት ይቀንሳል።
⓻ የግንኙነት አስተዳደር (Communication Management)
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▶️ መደበኛ የጣቢያ ስብሰባዎች: ከባለሙያዎች ጋር መወያየት።
▶️ የሂደት ሪፖርቶች: የሥራውን ውጤት በጽሑፍ ማሳወቅ።
▶️ ባለድርሻ አካላትን ማስተናበር: ከባለቤቱና ከባለሙያዎች ጋር መናበብ።
▶️ የሰነድ ቁጥጥር: መረጃዎችንና ፕላኖችን በአግባቡ መያዝ።
🔘 ጥቅሙ: ግልጽነትንና የቡድን ሥራን ያጠናክራል።
➇ የደህንነት አስተዳደር (Safety Management)
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▶️ የደህንነት እቅድና ገለጻ (Toolbox talks): ለሠራተኞች የደህንነት ትምህርት መስጠት።
▶️ የመከላከያ መሣሪያዎች (PPE): ቆብ፣ ጫማና ልብስ መጠቀምን ማረጋገጥ።
▶️ የአደጋ ትንተና: የግንባታ ቦታውን አደ ገኝነት መፈተሽ።
▶️የአደጋ ሪፖርት: አደጋ ሲከሰት በአግባቡ መመዝገብና መማር።
🔘 ጥቅሙ: ሠራተኞችንና ንብረትን ከአደጋ ይጠብቃል።
⓽ የግዥ አስተዳደር (Procurement Management)
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▶️ የአቅራቢዎች ምርጫ: ጥራት ያለው ዕቃ የሚያቀርቡ ድርጅቶችን መለየት።
▶️ የውል አስተዳደር: ስምምነቶችንና ኮንትራቶችን መቆጣጠር።
▶️ የዕቃዎች አቅርቦት ሰሌዳ: ዕቃዎች በሰዓቱ ጣቢያው እንዲደርሱ ማድረግ።
▶️ የመጋዘን ቁጥጥር (Inventory): ያሉትን ዕቃዎች መቆጣጠር።
📌 ጥቅሙ: በዕቃ እጥረት ምክንያት ሥራ እንዳይቆም ይረዳል።
➉ ክትትል እና ቁጥጥር (Monitoring & Control)
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👉የአፈጻጸም መለኪያዎች (KPIs): ውጤታማነትን መለካት።
👉የተከናወነ ሥራ ዋጋ (EVM): ከወጪ አንጻር የተሠራውን ሥራ መመዘን።
👉የጣቢያ ኦዲት: ሥራው በትክክል መከናወኑን መፈተሽ።
👉የማስተካከያ እርምጃዎች: ስህተት ሲኖር ወዲያውኑ ማረም።
🔘 ጥቅሙ: ፕሮጀክቱ በታለመለት መስመር እንዲሄድ ያደርጋል።
@etconp
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➀ እቅድ እና የጊዜ ሰሌዳ (Planning & Scheduling)
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▶️ የሥራ ክፍፍል መዋቅር (WBS): ፕሮጀክቱን ወደ ትናንሽና ሊተገበሩ ወደሚችሉ ክፍሎች መከፋፈል።
▶️ ጋንት ቻርት (Gantt Charts): የሥራ ሂደትን በግራፍ ማሳያ።
📌ክሪቲካል ፓዝ ሜተድ (CPM): ወሳኝ የሆኑ የሥራ መስመሮችን መለየት።
▶️ የማይልስቶን እቅድ (Milestone Planning): ዋና ዋና ግቦችን ማቀድ።
📌 ጥቅሙ: ፕሮጀክቱ በታቀደለት ጊዜ እንዲጠናቀቅ ያደርጋል።
⓶ የወጪ አስተዳደር (Cost Management)
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ዝርዝር የወጪ ግምት: እያንዳንዱ ሥራ ምን ያህል ወጪ እንደሚጠይቅ ማስላት።
▶️ የበጀት መድብ: ለተለያዩ የሥራ ክፍሎች በጀት መመደብ።
▶️ የገንዘብ ፍሰት ትንበያ (Cash flow): የገንዘብ ገቢና ወጪን መገመት።
▶️ የወጪ ልዩነት ትንተና: ከበጀት በላይ እንዳይወጣ መቆጣጠር።
🔘 ጥቅሙ: ካልተገባ ብክነትና ከመጠን ያለፈ ወጪ ይከላከላል።
➂ የጥራት አስተዳደር (Quality Management)
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▶️ የጥራት ማረጋገጫ (QA): ሂደቱ ትክክለኛ መሆኑን ማረጋገጥ።
▶️ የጥራት ቁጥጥር (QC): ውጤቱ ደረጃውን የጠበቀ መሆኑን መፈተሽ።
▶️ የጥሬ ዕቃ ፍተሻና ምርመራ: ጥራታቸው የተረጋገጠ ግብዓቶችን መጠቀም።
▶️ ደረጃዎችን ማክበር: የግንባታ ሕጎችንና ዝርዝር መመሪያዎችን መከተል።
🔘 ጥቅሙ: ጠንካራና ደህንነቱ የተጠበቀ ግንባታ እንዲኖር ያደርጋል።
⓸ የጊዜ አስተዳደር (Time Management)
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▶️ የሥራዎች ቅደም ተከተል: የትኛው ሥራ ቀድሞ መከናወን እንዳለበት መለየት።
▶️ የሀብት ማመጣጠን (Resource leveling): የሰው ኃይልና መሣሪያን በጊዜው ማከፋፈል።
▶️ የሂደት ክትትል: ሥራው በምን ደረጃ ላይ እንዳለ መከታተል።
▶️ የመዘግየት ትንተና: ለምን እንደዘገየ መለየትና መፍትሔ መፈለግ።
🔘 ጥቅሙ: ከጊዜ ሰሌዳ መውጣትን (Overrun) ያስቀራል።
⓹ የአደጋ ስጋት አስተዳደር (Risk Management)
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▶️ አደጋን መለየት: ሊያጋጥሙ የሚችሉ ችግሮችን አስቀድሞ ማወቅ።
▶️ አደጋን መገምገም: የችግሩን ክብደትና የመከሰት ዕድል መመዘን።
▶️ የመቀነሻ እቅድ: ችግሩን ለመቀነስ ወይም ለማስወገድ ማቀድ።
▶️ የመጠባበቂያ ክምችት: ለአደጋ ጊዜ የሚሆን ገንዘብ ወይም ጊዜ መያዝ።
🔘 ጥቅሙ: ያልተጠበቁ እንቅፋቶችን ይቀንሳል።
⓺ የሀብት አስተዳደር (Resource Management)
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▶️ የሰው ኃይል እቅድ: አስፈላጊ የሆኑ ሠራተኞችን ማደራጀት።
▶️ የማሽነሪዎች መድብ: መሣሪያዎችን ለሚፈለገው ሥራ ማከፋፈል።
▶️ የቁሳቁስ አቅርቦት እቅድ: የግንባታ ዕቃዎች የሚገዙበትን ጊዜ መወሰን።
▶️ የምርታማነት ክትትል: የሥራ ቅልጥፍናን መለካት።
🔘 ጥቅሙ በግንባታ ቦታ ላይ ያለውን ብክነት ይቀንሳል።
⓻ የግንኙነት አስተዳደር (Communication Management)
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▶️ መደበኛ የጣቢያ ስብሰባዎች: ከባለሙያዎች ጋር መወያየት።
▶️ የሂደት ሪፖርቶች: የሥራውን ውጤት በጽሑፍ ማሳወቅ።
▶️ ባለድርሻ አካላትን ማስተናበር: ከባለቤቱና ከባለሙያዎች ጋር መናበብ።
▶️ የሰነድ ቁጥጥር: መረጃዎችንና ፕላኖችን በአግባቡ መያዝ።
🔘 ጥቅሙ: ግልጽነትንና የቡድን ሥራን ያጠናክራል።
➇ የደህንነት አስተዳደር (Safety Management)
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▶️ የደህንነት እቅድና ገለጻ (Toolbox talks): ለሠራተኞች የደህንነት ትምህርት መስጠት።
▶️ የመከላከያ መሣሪያዎች (PPE): ቆብ፣ ጫማና ልብስ መጠቀምን ማረጋገጥ።
▶️ የአደጋ ትንተና: የግንባታ ቦታውን አደ ገኝነት መፈተሽ።
▶️የአደጋ ሪፖርት: አደጋ ሲከሰት በአግባቡ መመዝገብና መማር።
🔘 ጥቅሙ: ሠራተኞችንና ንብረትን ከአደጋ ይጠብቃል።
⓽ የግዥ አስተዳደር (Procurement Management)
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▶️ የአቅራቢዎች ምርጫ: ጥራት ያለው ዕቃ የሚያቀርቡ ድርጅቶችን መለየት።
▶️ የውል አስተዳደር: ስምምነቶችንና ኮንትራቶችን መቆጣጠር።
▶️ የዕቃዎች አቅርቦት ሰሌዳ: ዕቃዎች በሰዓቱ ጣቢያው እንዲደርሱ ማድረግ።
▶️ የመጋዘን ቁጥጥር (Inventory): ያሉትን ዕቃዎች መቆጣጠር።
📌 ጥቅሙ: በዕቃ እጥረት ምክንያት ሥራ እንዳይቆም ይረዳል።
➉ ክትትል እና ቁጥጥር (Monitoring & Control)
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👉የአፈጻጸም መለኪያዎች (KPIs): ውጤታማነትን መለካት።
👉የተከናወነ ሥራ ዋጋ (EVM): ከወጪ አንጻር የተሠራውን ሥራ መመዘን።
👉የጣቢያ ኦዲት: ሥራው በትክክል መከናወኑን መፈተሽ።
👉የማስተካከያ እርምጃዎች: ስህተት ሲኖር ወዲያውኑ ማረም።
🔘 ጥቅሙ: ፕሮጀክቱ በታለመለት መስመር እንዲሄድ ያደርጋል።
@etconp
❤21👏2
👉አስደሳች ዜና ለዚህ ቻናል ቤተሰቦች
ብዝዎቻቹ በጠየቃቹን መሰረት የ ETABS ሶፍትዌር ስልጠና በ ኦንላይን በተመጣጣኝ ዋጋ ምዝገባ ጀምረናል❤
📩ለመመዝገብ @Philemona7 ወይም 0925446661 ያናግሩን🙏
@etconp
ብዝዎቻቹ በጠየቃቹን መሰረት የ ETABS ሶፍትዌር ስልጠና በ ኦንላይን በተመጣጣኝ ዋጋ ምዝገባ ጀምረናል❤
📩ለመመዝገብ @Philemona7 ወይም 0925446661 ያናግሩን🙏
@etconp
❤8
If ‘H’ is the overall height of a retaining wall retaining a surcharge, the width of the base slab usually provided, is
Anonymous Quiz
43%
0.3 H
20%
0.4 H
21%
0.5 H
15%
0.7 H
👍8❤5
In a pre-stressed member it is advisable to use
Anonymous Quiz
7%
Low strength concrete only
19%
High strength concrete only
24%
Low strength concrete but high tensile steel
50%
High strength concrete and high tensile steel
👍5❤4