CIOB QS Technician Practice Exam 2026 - Free Quantity Surveying Technician Practice Questions and Study Guide

The question is testing your understanding of acoustics in buildings, specifically how well a building resists the passage of sound. Document E centers on sound insulation between spaces and against external noise, covering how walls, floors, and ceilings are designed and built to limit transmission, including performance standards and typical construction strategies (like mass, damping, and decoupling). This is why it’s the best fit: it directly addresses how sound travels through building elements and how to reduce that transmission.

Toxic substances, site preparation, and structural design belong to other areas. Toxic substances relates to hazards and materials handling, site preparation focuses on early earthworks and site setup, and structure deals with the load-bearing framework.