Lesson Notes By Weeks and Term v4 - SHS 2
SUBSTRUCTURE AND SUPERSTRUCTURE
Download the Lessonotes Mobile Ghana app for faster lesson access on Android and iPhone.
SUBSTRUCTURE AND SUPERSTRUCTURE
Download the Lessonotes Mobile Ghana app for faster lesson access on Android and iPhone.
Subject: Applied Technology
Class: SHS 2
Term: 1st Term
Week: 18
Grade code: 2.3.2.LI.4
Strand code: 3
Sub-strand code: 2
Content standard code: 2.3.2.CS.1
Indicator code: 2.3.2.LI.4
Theme: BUILDING CONSTRUCTION TECHNOLOGY
Subtheme: SUBSTRUCTURE AND SUPERSTRUCTURE
This page supports the lesson note with a companion video and a short classroom-ready summary.
For class groups and homework, share this lesson page so learners also get the summary, objectives, and full lesson context.
This lesson introduces the critical relationship between the ground beneath our feet and the buildings we live, work, and learn in. We will explore the substructure, which is the unseen hero of any building, focusing on its most important part: the foundation. We will learn why a 'one-size-fits-all' approach to foundations doesn't work, especially in Ghana where we have diverse soil types from the clay soils in the Accra plains to the laterite soils in Ashanti Region and the sandy soils along our coasts. Understanding this topic is crucial for anyone aspiring to be in the construction industry and for every citizen who wants to build a safe and lasting home for their family.
A. Substructure vs. Superstructure
Every building is divided into two main parts based on the ground level. Substructure: This is the part of the building that is below the ground level. Its main job is to safely transfer all the loads from the building to the supporting ground (the soil). The primary component of the substructure is the foundation. Superstructure: This is the part of the building that is above the ground level. It is the visible part of the structure, including the walls, columns, beams, floors, and roof.
Think of it like a tree: the roots are the substructure, anchoring it and drawing support from the ground, while the trunk, branches, and leaves are the superstructure. B. The Importance of Soil
The soil is what the foundation rests on. If the soil is weak, the building will not be stable, no matter how strong the foundation is. The ability of soil to support a load is called its Safe Bearing Capacity (SBC).