JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD
JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD B.Tech II BUILDING MATERIALS CONSTRUCTION AND PLANNING Previous Question Paper (February -2024 - R15)
Note: i) Question paper consists of Part A, Part B.
ii) Part A is compulsory, which carries 25 marks. In Part A, Answer all questions.
iii) In Part B, Answer any one question from each unit. Each question carries 10 marks and may have a, b as sub questions.
Part A
Define seasoning in the context of timber.
Answer
Seasoning is the controlled process of reducing the moisture content in freshly felled timber to a suitable level for its intended use. This process prevents shrinkage, warping, and decay by ensuring the wood reaches a state of equilibrium with the surrounding environment, thereby improving its strength, durability, and workability.
Compare properties and structural requirements of various building stones.
Answer
Building stones are selected based on their physical, chemical, and mechanical properties to meet specific structural requirements. The primary properties and requirements are as follows:
- Strength and Durability: Stones must possess high compressive strength to support structural loads. For load-bearing walls and foundations, stones like granite and basalt are preferred due to their high density and resistance to weathering.
- Hardness and Toughness: Stones used for flooring or paving require high hardness to resist abrasion and wear under traffic. Toughness is essential for stones used in road construction or structural members subjected to vibrations or impact loads.
- Porosity and Absorption: Low porosity is a critical structural requirement to prevent water ingress, which causes freeze-thaw damage and chemical deterioration. Stones with high absorption rates are unsuitable for external cladding or damp environments.
- Workability and Appearance: While structural integrity is paramount, stones must be easily dressed and carved for architectural features. Sedimentary stones like sandstone are often chosen for ornamental work, whereas igneous rocks are selected for heavy structural foundations due to their superior strength.
Name some of the chemical admixtures
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Outline the field and lab tests for assessing cement quality.
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Name some of the damp proofing materials.
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Discuss the requirements and characteristics of plumbing services in building construction.
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What is underpinning?
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How do lime and cement mortars differ?
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What are building bye laws?
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Explain the principles of building planning.
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Part B
What are the various ingredients in brick earth, and what harmful substances can be found in brick earth? Explain how these substances impact the brick manufacturing process.
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Explain the concept of decay in timber, outline methods for its detection, and discuss preventive measures against timber decay.
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Discuss the advantages and disadvantages of using admixtures in concrete, considering their effects on performance and cost-effectiveness.
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Explain the process of cement hydration, including its significance in concrete formation and construction application.
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Elaborate on the functional requirements and types of ventilation systems in buildings. How do these systems contribute to indoor air quality and occupant comfort?
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Enumerate the key factors that influence material selection for doors and windows in construction and how these factors impact the overall performance, aesthetics, and functionality of the built environment.
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Explain the importance of formwork in construction and outline the key requirements that should be followed in formwork design.
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Distinguish between pointing and plastering.
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Compare and contrast stone masonry and brick masonry in construction.
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Develop a residential building layout suitable for a family of four members in an urban city and explain the fundamental principles that guided your planning decisions.
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Elaborate on the fundamental principles underlying building bye laws and their role in urban planning.
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Discuss the classification criteria used for different types of buildings.
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