🚧Road Construction – Surveying, Setting Out & Earthworks
Road construction begins with accurate surveying and setting out, followed by proper earthwork, grading, drainage, pavement-layer construction, and compaction.
Each stage must be controlled to achieve the required alignment, levels, crossfall, and pavement performance.
Key elements shown:
1. Centerline Stake – Establishes the road alignment and chainage reference.
2. Staff / Leveling Rod – Used with a level instrument for taking accurate elevation readings.
3. Auto Level – Determines differences in elevation and helps establish design levels.
4. Grading & Leveling – A grader or dozer shapes the formation to the required profile.
5. Sub-base Layer – Granular material placed and compacted over the prepared subgrade.
6. Base Layer – Stronger granular pavement layer supporting the surface course.
7. Side Drain – Provides drainage and prevents water accumulation within the pavement and formation.
8. Compaction – Rollers compact soil and pavement materials to achieve the specified density.
📐 Typical Road Cross-Section
A typical pavement structure may consist of:
Natural ground
Compacted subgrade
Granular sub-base
Base course
Surface course
Shoulders
Camber/crossfall for drainage
📍 Setting-Out Procedure
1. Study drawings and alignment data.
2. Establish benchmarks and reference points.
3. Set out the centerline and chainages.
4. Take level readings and establish formation levels.
5. Check cross-sections and road width.
6. Proceed with earthwork, compaction, and pavement layers.
7. Carry out continuous quality and level checks.
Important: Actual layer thicknesses, materials, compaction requirements, camber, drainage dimensions, and design levels should be determined from the approved road design, geotechnical investigation, specifications, and applicable standards.
👉ባሁኑ ባለው ዋጋ የተሰራ፣ጨረታ ስትሞሉም የሚጠቅማቹ የመንገድ ስራ BOQ ከፈለጉ ከታች ባለው ሊንክ ያውርዱት👇
https://ye-buna.com/etconp?ref=product_detail&product=6aa4f7a526f13_etconp
Road construction begins with accurate surveying and setting out, followed by proper earthwork, grading, drainage, pavement-layer construction, and compaction.
Each stage must be controlled to achieve the required alignment, levels, crossfall, and pavement performance.
Key elements shown:
1. Centerline Stake – Establishes the road alignment and chainage reference.
2. Staff / Leveling Rod – Used with a level instrument for taking accurate elevation readings.
3. Auto Level – Determines differences in elevation and helps establish design levels.
4. Grading & Leveling – A grader or dozer shapes the formation to the required profile.
5. Sub-base Layer – Granular material placed and compacted over the prepared subgrade.
6. Base Layer – Stronger granular pavement layer supporting the surface course.
7. Side Drain – Provides drainage and prevents water accumulation within the pavement and formation.
8. Compaction – Rollers compact soil and pavement materials to achieve the specified density.
📐 Typical Road Cross-Section
A typical pavement structure may consist of:
Natural ground
Compacted subgrade
Granular sub-base
Base course
Surface course
Shoulders
Camber/crossfall for drainage
📍 Setting-Out Procedure
1. Study drawings and alignment data.
2. Establish benchmarks and reference points.
3. Set out the centerline and chainages.
4. Take level readings and establish formation levels.
5. Check cross-sections and road width.
6. Proceed with earthwork, compaction, and pavement layers.
7. Carry out continuous quality and level checks.
Important: Actual layer thicknesses, materials, compaction requirements, camber, drainage dimensions, and design levels should be determined from the approved road design, geotechnical investigation, specifications, and applicable standards.
👉ባሁኑ ባለው ዋጋ የተሰራ፣ጨረታ ስትሞሉም የሚጠቅማቹ የመንገድ ስራ BOQ ከፈለጉ ከታች ባለው ሊንክ ያውርዱት👇
https://ye-buna.com/etconp?ref=product_detail&product=6aa4f7a526f13_etconp
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