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๐Ÿ”จ World Construction Engineering
Latest updates, tips, and tutorials on building, civil engineering, and construction in World.
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๐Ÿ‘‰แ‹จแ‹ฐแ‰ฅแˆจ แˆ›แˆญแ‰†แˆต แŠ แ‹แˆฎแ•แˆ‹แŠ• แˆ›แˆจแŠแ‹ซ (แŠคแˆญแ–แˆญแ‰ต) แˆตแˆซ แŒ€แˆ˜แˆจแข

แ‹จแŠขแ‰ตแ‹ฎแŒตแ‹ซ แŠ แ‹จแˆญ แˆ˜แŠ•แŒˆแ‹ต แ‹จแˆ˜แŒ€แˆ˜แˆชแ‹ซ แ‰ แˆจแˆซแ‹แŠ• แŠ แ‹ตแˆญแŒ“แˆแข

แ‹จแŠ แŠซแ‰ฃแ‰ขแ‹ แˆ›แˆ…แ‰ แˆจแˆฐแ‰ฅ แˆˆแ‰ฅแ‹™ แ‹“แˆ˜แ‰ณ แˆฒแŒ แ‰ฅแ‰€แ‹ แ‹จแАแ‰ แˆจแ‹ แ‹จแŠ แ‹แˆฎแ•แˆ‹แŠ• แˆ›แˆจแŠแ‹ซ แ‹›แˆฌ แŒแŠ•แ‰ฆแ‰ต 8/2018 แ‹“.แˆ แ‹จแˆ˜แŒ€แˆ˜แˆชแ‹ซแ‹แŠ• แ‹จแˆ™แŠจแˆซ แ‰ แˆจแˆซ แ‰ แˆตแŠฌแ‰ต แŠ แˆตแ‰ฐแŠ“แŒแ‹ทแˆแข

แ‹จแˆ™แŠจแˆซ แ‰ แˆจแˆซแ‹ แˆ˜แˆณแŠซแ‰ฑแŠ• แ‰ฐแŠจแ‰ตแˆŽ แ‰ แ‰€แŒฃแ‹ญ แˆ˜แ‹ฐแ‰ แŠ› แ‰ แˆจแˆซแ‹Žแ‰ฝ แŠฅแŠ•แ‹ฐแˆšแŒ€แˆแˆฉ แ‰ฐแŒˆแˆแŒฟแˆแข

แ‹จแ‹ฐแ‰ฅแˆจ แˆ›แˆญแ‰†แˆต แŠจแ‰ฐแˆ› แŠ แˆตแ‰ฐแ‹ณแ‹ฐแˆญ " แ‹จแŠ แ‹แˆฎแ•แˆ‹แŠ• แˆ›แˆจแŠแ‹ซแ‹ แˆ˜แŠจแˆแ‰ต แ‹จแŠจแ‰ฐแˆ›แ‹‹แŠ• แ‹จแ‰ตแˆซแŠ•แˆตแ–แˆญแ‰ต แ‰ฐแ‹ฐแˆซแˆฝแАแ‰ต แŠจแˆ›แˆปแˆปแˆ‰แˆ แ‰ แˆ‹แ‹ญ แˆˆแŠขแŠ•แ‰จแˆตแ‰ตแˆ˜แŠ•แ‰ต แˆ˜แˆตแ‹แ‹แ‰ตแฃ แˆˆแ‰ฑแˆชแ‹แˆ แˆ˜แАแ‰ƒแ‰ƒแ‰ตแŠ“ แˆˆแŠ•แŒแ‹ต แ‰ตแˆตแˆตแˆญ แŠจแแ‰ฐแŠ› แˆšแŠ“ แ‹ญแŒซแ‹ˆแ‰ณแˆแค แŠฅแŠ•แ‹ฒแˆแˆ แˆˆแ‹ˆแŒฃแ‰ถแ‰ฝ แŠ แ‹ฒแˆต แ‹จแˆฅแˆซ แ‹•แ‹ตแˆ แ‹ญแˆแŒฅแˆซแˆ " แ‰ฅแˆแˆแข

แŒแŠ•แ‰ฆแ‰ต 8 แ‰€แŠ• 2018 แ‹“/แˆ

Via TikVah Ethiopia

@etconp
โค17๐Ÿ‘9
When two points of surveying are mutually invisible the following method of ranging is adopted
Anonymous Quiz
13%
Direct ranging
54%
Indirect ranging
20%
Horizontal ranging
13%
Vertical ranging
1โค11๐Ÿ‘5
The fixed point whose elevation is known, is called as
Anonymous Quiz
85%
Benchmark
3%
Change point
6%
Reduced level
6%
Station
๐Ÿ‘8โค2
Which one of the following would contain water with the maximum amount of turbidity?
Anonymous Quiz
12%
Lakes
37%
Oceans
43%
Rivers
9%
Wells
๐Ÿ‘7โค3๐Ÿฅฐ1
The Poisson's ratio for most of the materials is close to ..........
Anonymous Quiz
33%
(a) 1 : 2
37%
(b) 1 : 3
16%
(c) 1 : 4
14%
(d) 1 : 5
๐Ÿ‘7
A Parabolic two hinged arch is loaded with a concentrated load โ€˜Wโ€™ at the Crown. The Horizontal thrust is equal to
Anonymous Quiz
26%
A) (54 WL)/(128 h)
28%
B) (25 WL)/(128 h)
25%
C) (50 WL)/(128 h)
22%
D) (36 WL)/(128 h)
๐Ÿ‘8
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โค5๐Ÿ™2
๐Ÿ‘‰Site leveling is one of the most fundamental tasks in civil engineering and construction, ensuring that the ground is properly prepared before foundations, pavements, or structures are built.

๐ŸšงThe process revolves around establishing a reference level and then comparing different points on the site to determine differences in elevation.

Step 1: Benchmark Setting
A benchmark is a fixed reference point with a known height.

It is usually a concrete block or a permanent marker.
- A measuring staff (rod) is placed on the benchmark.
- Readings are taken to establish the reference level.
- This benchmark acts as the "zero" or starting point for all subsequent measurements.

Step 2: Measuring Ground Level Difference

To compare two points (say Point A and Point B), a water-filled transparent hose is used.
- Water naturally seeks the same level at both ends of the hose, creating a simple yet accurate leveling tool.
- The difference in readings at Point A and Point B gives the ground level difference.
- Formula: B โ€“ A = Ground Level Difference.
- For convenience, Point A is often assumed as 1 meter to simplify calculations.

Key Precautions

- Ensure the hose is free of air bubbles.
- Keep both ends vertical while taking readings.
- Take measurements carefully to avoid errors.

Applications

- Foundation setting: Establishing the correct depth and level for building foundations.
- Slope checking: Ensuring proper drainage and fall in roads or pavements.
- Site preparation: Leveling uneven ground before construction begins.
- Road design: Confirming gradients and slopes for safe traffic movement.

This simple technique using a benchmark and water hose is still widely used in small-scale projects because of its accuracy, low cost, and ease of application.

#SiteLeveling #ConstructionBasics #GroundLevelDifference #FoundationWork

@etconp
โค8๐Ÿ‘3
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โ— Concrete Admixtures
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โ— Wall Putty, Prime Coat
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โค2
๐Ÿ‘‰A retaining wall with buttresses is a reinforced civil engineering structure designed to resist lateral soil pressure while remaining economical and durable.

โ–ถ๏ธIt combines strength with efficiency, making it ideal for tall retaining applications.

๐Ÿ”น Combined Details

- Wall Stem: The main vertical face that directly holds back soil.
- Buttresses: Vertical supports placed behind the wall, spaced about 2.5 m to 4.0 m apart, which absorb and distribute soil pressure.
- Toe Slab: Extends forward at the base, preventing overturning.
- Heel Slab: Extends backward under the soil, counterbalancing earth pressure.
- Foundation: Transfers loads safely to the ground, ensuring stability.

๐Ÿ”น Advantages

- Economical: Uses less concrete compared to gravity walls.
- Strong & Stable: Buttresses provide excellent resistance to lateral loads.
- Durable: Reinforced design ensures long service life.
- High Wall Suitability: Perfect for tall retaining structures.
- Ease of Construction: Straightforward design and practical execution.

๐Ÿ”น Applications

- Highway Embankments: Prevents soil collapse along roadways.
- Bridge Approaches: Provides stable support near abutments.
- Landscaping Projects: Used in gardens, terraces, and sloped areas.

#RetainingWall #StructuralDesign #ButtressWall #ConstructionDetails #HighwayEngineering #FoundationDesign

@etconp
โค5๐Ÿ‘2
๐Ÿ‘‰Hereโ€™s a clear stepโ€‘byโ€‘step explanation of how block quantity is calculated for a wall with openings like doors and windows:

๐Ÿงฑ Step 1: Measure Wall Dimensions

- The wall height is 2800 mm (2.8 m).
- The total wall length is the sum of left side (4.5 m), door width (0.9 m), and right side (3.6 m) = 9.0 m.
- So, gross wall area = 9 ร— 2.8 = 25.2 mยฒ.

๐Ÿšช Step 2: Deduct Openings

- Door area = 0.9 ร— 2.1 = 1.89 mยฒ.
- Window area = 1.2 ร— 1.2 = 1.44 mยฒ.
- Total openings = 3.33 mยฒ.
- Net wall area = 25.2 โˆ’ 3.33 = 21.87 mยฒ.

๐Ÿ“ Step 3: Block Size

- Block size including mortar joint = 475 mm ร— 250 mm = 0.475 ร— 0.25 m = 0.11875 mยฒ per block.

๐Ÿ”ข Step 4: Calculate Number of Blocks

- Net wall area รท Block area = 21.87 รท 0.11875 โ‰ˆ 184 blocks.
- This gives the total number of blocks required for construction.

โœ… Summary

1. Find gross wall area.
2. Deduct door and window openings.
3. Calculate net wall area.
4. Divide by block area to get block quantity.

@etconp
โค8๐Ÿ‘4
๐Ÿ‘‰What Is CBR

๐Ÿ’ซThe California Bearing Ratio (CBR) Test is one of the most widely used soil strength evaluation methods in civil engineering, especially for pavement and highway design. Letโ€™s break down the details clearly:

๐ŸŒ Importance of CBR Test

- Road design: Ensures pavements can withstand traffic loads.
- Subgrade selection: Helps engineers choose suitable soil for foundations.
- Cost-effective method: Simple, economical, and reliable compared to other soil strength tests.
- Airfield construction: Guarantees safe and stable runways for aircraft operations.

๐Ÿ› ๏ธ Step-by-Step Procedure

- Sample preparation: Soil compacted in a mould to standard density.
- Soaking: Sample immersed in water for a set duration to simulate worst-case conditions.
- Loading machine placement: Mould placed in the CBR apparatus.
- Penetration test: Load applied using a plunger, penetration measured.
- Load vs penetration graph: Data plotted to visualize soil resistance.
- Calculation: CBR (%) = (Test Load รท Standard Load) ร— 100.

๐Ÿ—๏ธ Applications

- Highway design: Determines pavement thickness for durability.
- Airfield design: Ensures safe aircraft movement.
- Subgrade evaluation: Assesses soilโ€™s load-bearing capacity.
- Foundation assessment: Helps in economical and safe foundation design.

โœจ Motivational Takeaway

โ€œGood Testing Today, Better Structures Tomorrow.โ€
โ€œTest it Right, Build it Strong!โ€

#CBRTest #SoilStrength #HighwayDesign #FoundationEngineering #PavementDesign #GeotechnicalEngineering #StructuralSafety

@etconp
โค13๐Ÿ‘3
๐Ÿ‘‰Why Contractors Pay Heavy Liquidated Damages (LD) Penalties in Construction Projects

One small delay can lead to huge financial losses in construction contracts.

From slow progress to poor planning, these common mistakes are the main reasons for Liquidated Damages (LD).

Every site engineer and contractor should know them before starting any project.

@etconp
โค12๐Ÿ‘4
๐Ÿ‘‰Small Rate Analysis Errors Can Turn a Profitable Tender Into a Loss Project โ—๏ธ

๐Ÿ’ซWinning a tender is easy making profit from that tender is the real challenge.

๐ŸšงStrong rate analysis protects contractors from future losses and disputes.

@etconp
โค10