Construction Health and Safety Technician (CHST) Practice Test 2026 - Free CHST Practice Questions and Study Guide

Wallboard, also known as drywall or plasterboard, is the correct answer because historically, certain types of wallboard were manufactured using materials that contained asbestos, especially before the 1980s. Asbestos was commonly used in various building materials due to its fire-resistant properties and durability. Understanding the presence of asbestos in wallboard is crucial for safety in construction sites since disturbing these materials during renovations or demolitions can release harmful asbestos fibers into the air, posing serious health risks to workers.

Other materials listed, like wood flooring, steel beams, and PVC pipes, do not traditionally contain asbestos. While older types of flooring might have some asbestos in adhesives or underlayment, they are not as commonly associated with asbestos as wallboard. Steel beams are typically made of metal and do not involve asbestos. PVC pipes are synthetic and do not contain asbestos either. Thus, wallboard stands out as the most relevant material in the context of asbestos exposure risks at construction sites.