Principles of Building Planning MCQ with answer and solution

Concept

Wire gauge doors are specialized utility doors used for ventilation and insect protection, typically installed alongside main doors in residential and office buildings.

Step-by-step solution

1. Understand the functional requirement: free air circulation combined with insect prevention. 2. Evaluate the given door types: Slab doors are solid and block air; sliding doors open laterally but do not inherently provide insect mesh; revolving doors are for controlled public entries; wire gauge doors feature fine mesh screens specifically for ventilation and keeping insects out. 3. Match the description with 'Wire gauge door'.

Explanation

A wire gauge door (also known as a fly-proof or wire mesh door) consists of a wooden or metal frame fitted with fine wire mesh or gauze. It is specifically designed to allow free circulation of air into the building while preventing mosquitoes, flies, and other insects from entering.

Why the other options are wrong

A: A slab door is a solid flat door that blocks air circulation. B: A sliding door moves horizontally along tracks and can be made of any material, not specifically meant for insect control. D: A revolving door is used in large public buildings to regulate traffic and prevent draft, not for insect protection.

Shortcut

Look for keywords like 'mosquitoes, flies, insects' and 'air circulation'—these directly point to 'wire gauge' or 'fly-proof' doors.

Common mistake

Confusing wire gauge doors with louvered doors, which provide ventilation through sloping slats but may not completely stop small insects unless fitted with mesh.