DSE

Road Construction (Step by Step)
from 1 to 10
1. Survey Work

Site leveling and alignment

Using total station / auto level

Setting center line and benchmarks

2. Clearing and Grubbing

Remove trees, grass, debris, topsoil

3. Earthwork (Cut & Fill)

Cutting high areas

Filling low areas

Compaction of soil

4. Subgrade Preparation

Final shaping of soil layer

Proper compaction (95% MDD)

Field density testing

5. Sub-base Layer

GSB (Granular Sub Base)

Compacted in layers

6. Base Course

WMM (Wet Mix Macadam) or crushed aggregate

High strength layer

7. Prime Coat

Applied on base layer for binding

8. Asphalt Layers

Binder course

Wearing course (final smooth surface)

9. Finishing (Smooth Road Surface)

Compaction with roller

Final leveling and quality check

🚧

You always confuse between convex and concave?⁉️
#طرق

Structural Analysis Challenge: Calculate The Maximum Bending Moment For A Cantilever Beam Supporting Both A Uniformly Distributed Load W And A Point Load P At Its Free End. The Maximum Bending Moment Occurs At The Fixed Support. It Is Calculated By Summing The Moments From Both Loads: BM = WL2/2 + PL. This Fundamental Concept Helps Engineers Design Safe Support Systems.

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🏗️ Structural roofing projects require precise measurements, roof slope calculations, and crane operations. 📊

Highway Superelevation Transition & Road Curve Design

Superelevation is the transverse slope provided on horizontal road curves to reduce the effect of centrifugal force on moving vehicles. It improves vehicle stability, driving comfort, and road safety by gradually transitioning the pavement from a normal crown section to a fully banked curve.

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Fly Levelling Survey Method

Fly levelling is a surveying method used to determine reduced levels (RL) between distant points quickly and accurately. It is commonly used when the ground is uneven or the distance is long.

Main Process:

1. Take Back Sight (BS) on a known point.

2. Calculate Height of Instrument (HI).

3. Take Fore Sight (FS) on turning point.

4. Shift instrument and repeat process.

Important Formula:

HI = RL + BS

RL = HI - FS

Uses:

Road & railway survey

Canal construction

Building layout work

Long-distance levelling

Advantages:

Fast and accurate method

Suitable for uneven ground

Reduces cumulative error

to calculate number of bricks in a wall ⁉️

BASIC KNOWLEDGE FOR CIVIL SITE