Kaushal Vikas Class 9 Chapter 6, Construction, teaches the fundamentals of masonry and building everyday school or community structures, such as a ramp, low wall or flower-bed boundary. It opens with India’s dam engineering, featuring the 261 m Tehri Dam on the Bhagirathi river in Uttarakhand.
What Kaushal Vikas Chapter 6 Covers
Technical Drawing and Bill of Materials (6.2–6.7) covers site visits, drawing the selected structure, selecting tools and materials, and estimating the exact number of bricks and mortar needed for the Bill of Materials.
Minor Repairs, Bricklaying and Alignment (6.8–6.9) walks through minor masonry repairs, preparing foundation and mortar, laying bricks in bond, checking plumb and level alignment, curing and plastering.
Finishing and Painting (6.10–6.12) compares whitewash (lime wash), distemper and cement paint, with a case study of students finishing a school ramp with water-resistant cement paint.
Estimating bricks and mortar: before the bill of materials, estimate how many bricks are needed and how much mortar, a mix of sand, cement and water, then add the cost of labour.
Curing and alignment: applied mortar must be kept wet for 14–28 days. Bricks are soaked for 6–12 hours before laying, and walls are kept in line so the load goes straight down into the ground. Plastering follows the brickwork. Tools include the trowel (karni or thappa) and the hoe.
Read Kaushal Vikas Class 9 Chapter 6 Online
More Chapters
- Previous: Chapter 5: Shaping Materials
- Next: Chapter 7: Apparel
- All Skill Education chapters and the other Class 9 books: Class 9 NCERT books 2026-27
- All Class 1 to 12 NCERT Textbooks: NCERT Books PDF (Class 1–12)
FAQ
What practical calculations are taught in Kaushal Vikas Chapter 6?
Estimating the number of bricks and the quantity of cement-sand mortar required for a structure to prepare a Bill of Materials.
Which paint is used on outdoor ramps and boundary walls in Chapter 6?
Cement paint, because it is water-resistant, prevents fungus and mildew, and reduces slipperiness.
How long should mortar be cured?
It should be kept wet for 14–28 days after it is applied.