PWODS301: Drainage Structures Construction

Topic outline

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  Course Overview

  Introduction

  Water is the main contributor to the wear and damage of low-volume rural roads. The water can be in the form of ground water, surface water (streams and rivers) or rain and it can damage the road in several ways:

  • by washing away, the soil (erosion and scouring),

  • by making the road body less resistant to traffic (i.e. weakening the load bearing capacity),

  • by depositing soils (silting) which may obstruct the passage of water

  • by washing away entire sections of the road or its structures.

  If water is allowed to enter the structure of the road, the pavement and subgrade will be weakened, and it will be much vulnerable to damage by traffic. Damage and wear to the road can be reduced if the flow of water is controlled by providing drains. The major and the only perfect way of protecting the road from damage is to provide a well-constructed drain.

  This module describes the skills, knowledge and attitudes required to perform the construction of drainage structures. It is intended for learners who are pursuing level 3 in public works.
  

  At the end of this module, learners will be able to prepare the work, excavate the trench, construct drainage system structures and apply erosion control methods. Qualified learners deemed competent to this competency shall have the ability to take responsibility for the carrying out of a range of defined activities in Public Works under non- directive supervision.

  
  

  
  

   Source: Internet

  Learning Objectives
  

  Upon completion of the module, the trainee will be able to :

  • Prepare for work.
  • Excavate trenches.
  • Construct drainage system structures.
  • Apply erosion control method and cleaning workplace.
    

  
  

  • Announcements Forum
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  General Introduction

  • Introduction Interactive Content
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  Learning Outcome 1 : Prepare for work

  By the end of the learning outcome, the trainees will be able to:
  

  1. Selected properly Materials used in drainage system in accordance with type of work
  2. Selected properly Tools used in drainage system in accordance with type of work
     
  3. Selected properly equipment used in drainage system in accordance with type of work
     
  4. Prepare conveniently Workplace is according to the work to be done
     

  • Indicative Content 1.1: Selection of materials Interactive Content
  • Indicative Content 1.2: Selection of tools and equipment Interactive Content
  • Indicative Content 1.3: Preparation of workplace Interactive Content
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  Learning Outcome 2 : Excavate trenches

  
  

  By the end of the learning outcome, the trainees will be able to:
  

  1. Set adequately Drainage structures according to the drawing

  2. Excavate conveniently trenches in accordance to the measurement of structure

  3. Install properly Trench shields according to the site condition.

  
  
  

  • Indicative Content 2.1: Setting out of drainage structures Interactive Content
  • Indicative Content 2.2: Excavation of trenches Interactive Content
  • Indicative Content 2.3: Installation of trench shield Interactive Content
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  Learning Outcome 3 : Construct drainage system structures

  
  

  By the end of the learning outcome, the trainees will be able to:
  

  1. Install properly Subsurface drainage according to the specification drainage system structures.

  2. Construct adequately masonry drainage according to the type of drain

  3. Execute systematically Backfilling in accordance with specification

  
  

  • Indicative Content 3.1: Installation of subsurface drainage Interactive Content
  • Indicative Content 3.2: Construction of masonry drainage Interactive Content
  • Indicative Content 3.3: Execution of backfilling Interactive Content
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  Learning Outcome 4 : Apply erosion control method and cleaning workplace

  
  

  By the end of the learning outcome, the trainees will be able to:

  1. Identify properly Erosion according to their types

  2. Plant properly Vegetation according to the types of soil

  3. Clean correctly Tools, equipment and workplace with accordance to the standard

  
  

  • Indicative Content 4.1: Identification of erosion Interactive Content
  • Indicative Content 4.2: Erosion control method Interactive Content
  • Indicative Content 4.3: Cleaning of tools, equipment and workplace Interactive Content
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  Sources

  • References Page