ETCONp - Ethiopian Construction Work Professionals

👉A retaining wall

🚧is a structure designed to hold back soil or other materials and prevent them from sliding or eroding. It is commonly used in landscaping, civil engineering, and construction to create level areas on sloped terrain, support roadways, or prevent landslides.

⏺Retaining walls must withstand the pressure exerted by the retained material, known as lateral earth pressure.

🏷Types of Retaining Walls

⏺1. Gravity Retaining Wall

- Relies on its own weight to resist the pressure from the soil.
- Typically made of heavy materials like concrete, stone, or masonry.
- Suitable for shorter walls (up to 3-4 meters).

⏺2. Cantilever Retaining Wall

- Made of reinforced concrete or steel.
- Consists of a base slab and a vertical stem.
- Uses a lever arm (cantilever) action to resist soil pressure.
- Common for medium-height walls (up to 6-8 meters).

⏺3. Counterfort Retaining Wall

- Similar to a cantilever wall but includes vertical supports (counterforts) at regular intervals.
- Counterforts reduce bending moments and shear forces.
- Used for taller walls (over 8 meters).

⏺4. Buttress Retaining Wall

- Similar to a counterfort wall, but the supports (buttresses) are on the front side of the wall.
- Used when space behind the wall is limited.

⏺5. Sheet Pile Retaining Wall

- Made of thin, interlocking steel, wood, or vinyl sheets driven into the ground.
- Used in soft soils and tight spaces, such as waterfronts or temporary excavations.
- Suitable for both temporary and permanent applications.

⏺6. Anchored Retaining Wall

- Uses cables or rods (anchors) driven into the soil or rock behind the wall.
- Anchors provide additional support, especially for tall or heavily loaded walls.
- Commonly used in challenging soil conditions.

⏺7. Gabion Retaining Wall

- Constructed from wire baskets filled with rocks or other materials.
- Flexible and permeable, making it suitable for erosion control and drainage.
- Often used in landscaping and riverbank stabilization.

⏺8. Crib Wall

- Made of interlocking boxes or frames (cribs) filled with soil or gravel.
- Often used in landscaping and for low-height retaining walls.

⏺9. Reinforced Soil Retaining Wall

- Combines soil with reinforcement materials like geogrids or strips.
- The reinforcement increases the soil's strength and stability.
- Commonly used in highway and railway projects.

⏺10. Mechanically Stabilized Earth (MSE) Wall

- A type of reinforced soil wall with layers of reinforcement (geogrids or strips) and facing panels.
- Highly durable and cost-effective for large-scale projects.

📜Each type of retaining wall has specific applications based on factors like height, soil type, load requirements, and cost. Proper design and construction are essential to ensure stability and longevity.

@etconp

👉A Building Management System (BMS) is a computer-based control system that monitors, controls, and optimizes building systems and services.

🏷Key Components of a BMS:

1. *Hardware*: Sensors, actuators, controllers, and other devices that collect data and perform actions.
2. *Software*: Programs that analyze data, make decisions, and provide user interfaces.
3. *Communication protocols*: Standards that enable devices to exchange data, such as BACnet, Modbus, and LonWorks.

⭐️Functions of a BMS:

1. *Monitoring*: Collects data from sensors and devices to track building performance.
2. *Control*: Adjusts building systems, such as HVAC, lighting, and security, to optimize performance and efficiency.
3. *Optimization*: Analyzes data to identify opportunities for energy savings, improved comfort, and reduced maintenance.
4. *Alarm management*: Detects and notifies personnel of issues, such as equipment failures or security breaches.
5. *Reporting and analytics*: Provides insights and data visualization to support decision-making.

🔰Benefits of a BMS:

1. *Energy efficiency*: Optimizes energy consumption and reduces waste.
2. *Improved comfort*: Enhances indoor air quality, temperature, and lighting.
3. *Increased productivity*: Supports business operations and occupant well-being.
4. *Reduced maintenance*: Predictive maintenance and automated diagnostics minimize downtime.
5. *Enhanced security*: Integrates security systems, such as access control and surveillance.

📜Applications of BMS:

1. *Commercial buildings*: Offices, shopping centers, and hotels.
2. *Industrial facilities*: Manufacturing plants, warehouses, and data centers.
3. *Healthcare facilities*: Hospitals, clinics, and nursing homes.
4. *Educational institutions*: Schools, universities, and libraries.
5. *Residential buildings*: Apartments, condominiums, and smart homes.

@etconp

👉የኢትዮጵያ አርክቴክቶች ማህበር ሊኖረው የሚገባ የራሱ ህንጻ

🏷ኢትዮጵያ አርክቴክቶች ማህበር ሙያቸውን ባዳበሩ እውቅ አርክቴክቶች እና አማካሪ ድርጅቶችን በአባልነት ያቀፈ  ሲሆን  እንደገና ከተቋቋመ ከ33 አመት በላይ ያደረገ አንጋፋ የሙያ ማህበር ነው።

⏺በዚህ አንጋፋነቱ አሁናዊ ቁመናውን የሚመጥን ንድፍ አዘጋጅቶ እና መሬት ጠይቆ የራሱን ህንጻ ቢገነባ የሚበዛበት ጉዳይ አይደለም።

⏺መሰብሰብያ አዳራሽ፣ ወጣት ህንጻ ነዳፊዎች በኪነህንጻ ሙያ እና ተዛማጅ ስራዎች ላይ የቢዝነስ ሀሳቦቻቸውን Incubate የሚያደርጉባቸው ስፍራዎች፣ የምርምር ቤተመጻህፍት፣ የco-working ቦታዎች፣ የንድፍ ውድድር እንዲሁም ንድፍ  ስራዎች የሚቀርቡባቸው የአውደርዕይ ቦታዎች፣ የኢትዮጵያ እንዲሁም የአፍሪካ ኪነህንጻ ቤተመዘክር (Ethiopian and African Architecture Museum) ወዘተ.... የሚይዝ አንድ complex መገንባት ይቻላል።

💫እንዴት ይኬድበት?

1. ባለድርሻ አካላት ይለዩ።
2. የራሳቸውን ተቋማት የገነቡ የሙያ ማህበራት ልምድ ይወሰድ።
3. ሀሳባዊ ንድፍ ውድድር ይካሄድ።
4. አዋጭነት ጥናት ይጠና።
5. ለመንግስት የመሬት ጥያቄ ይቅረብ።
6. ኢአማ ለዚህ ጉዳይ task force ያዘጋጅ።

📩እስቲ በየቦታው እንነጋገርበት።

Via ethiopian architecture and urbanism

@etconp

👉Road construction Vs highway construction

🚧Road construction and highway construction are related but differ in scope, design standards, and purpose. Here's a breakdown of the key differences:

🏷1. Definition and Purpose

⏺Road Construction: Refers to the building or maintenance of roads, which can range from small local streets to larger urban or rural roads. Roads are typically designed for lower traffic volumes and slower speeds, serving local communities, neighborhoods, and smaller regions.

⏺Highway Construction: Involves the construction of highways, which are major public roads designed to connect cities, states, or regions. Highways are built for higher traffic volumes, faster speeds, and long-distance travel.

🏷2. Design Standards

⏺Road Construction:

- Lower design speeds (e.g., 30-50 mph or 50-80 km/h).
- Narrower lanes and smaller clearances.
- May include intersections, traffic lights, and pedestrian crossings.
- Often has direct access to adjacent properties (e.g., driveways).
- Highway Construction:
- Higher design speeds (e.g., 60-75 mph or 100-120 km/h).
- Wider lanes, multiple lanes, and larger clearances.
- Limited access points (e.g., interchanges or ramps instead of intersections).
- Often includes features like medians, guardrails, and advanced signage.

🏷3. Traffic Volume

⏺Road Construction: Designed for lower traffic volumes, typically serving local traffic.
⏺Highway Construction: Designed for high traffic volumes, accommodating long-distance and heavy commercial traffic.

🏷4. Materials and Techniques

⏺Road Construction: May use simpler materials and techniques, depending on the road's purpose and location. For example, residential roads might use asphalt or concrete, while rural roads might use gravel.

⏺Highway Construction: Requires more durable materials and advanced engineering techniques to handle heavy loads and high speeds. Highways often use reinforced concrete or high-quality asphalt.

🏷5. Regulations and Standards

⏺Road Construction: Follows local or municipal standards, which may vary depending on the area.

⏺Highway Construction: Must adhere to stricter national or state-level standards, as highways are part of a larger transportation network.

🏷6. Cost and Scale

⏺Road Construction: Generally smaller in scale and less expensive, focusing on local needs.

⏺Highway Construction: Larger in scale, involving significant planning, engineering, and funding. Highways are often multi-year projects with higher costs.

⭐️7. Examples

⏺Road Construction: Building a residential street, a rural road, or an urban avenue.

⏺Highway Construction: Constructing an interstate freeway, a national highway, or a toll road.

🚧In summary, road construction focuses on local and smaller-scale transportation needs, while highway construction deals with large-scale, high-capacity routes designed for long-distance travel and heavy traffic.

@etconp

👉The Standard Proctor Test and the Modified Proctor Test

💫The Standard Proctor Test and the Modified Proctor Test are both laboratory methods used to determine the optimum moisture content (OMC) and maximum dry density (MDD) of soil.

These tests are essential for soil compaction in construction projects. The key differences between the two tests are as follows:

### 1. Compaction Energy:
   - Standard Proctor Test: Uses lower compaction energy. The test involves compacting soil in a mold using a hammer weighing 2.5 kg (5.5 lbs) dropped from a height of 305 mm (12 inches) for 25 blows per layer.
   - Modified Proctor Test: Uses higher compaction energy. The test involves a heavier hammer (4.54 kg or 10 lbs) dropped from a height of 457 mm (18 inches) for 25 blows per layer.

### 2. Purpose:
   - Standard Proctor Test: Typically used for lighter construction projects, such as small buildings, roads, and embankments, where lower compaction energy is sufficient.
   - Modified Proctor Test: Used for heavier construction projects, such as highways, airports, and large dams, where higher compaction energy is required to achieve greater soil density.

### 3. Dry Density and Moisture Content:
   - Standard Proctor Test: Results in a lower maximum dry density and higher optimum moisture content compared to the Modified Proctor Test.
   - Modified Proctor Test: Results in a higher maximum dry density and lower optimum moisture content due to the increased compaction energy.

### 4. Applications:
   - Standard Proctor Test: Suitable for soils in areas with less stringent compaction requirements.
   - Modified Proctor Test: Suitable for soils in areas with higher traffic loads or where greater stability is needed.

### 5. Standards:
   - Standard Proctor Test: Follows ASTM D698 or AASHTO T99 standards.
   - Modified Proctor Test: Follows ASTM D1557 or AASHTO T180 standards.

In summary, the Modified Proctor Test applies higher compaction energy to achieve greater soil density, making it suitable for more demanding engineering projects, while the Standard Proctor Test is used for less critical applications.

@etconp