This document discusses common materials used in construction - brick, cement, timber, sand, and mortar. For each material, it outlines requirements, types, and uses. Bricks discussed include conventional and standard sizes. Cement types include ordinary portland, pozzolana portland, white, and colored. Timber types are natural and industrial. Sand requirements include being clean, well-graded, and containing sharp grains. Mortar types vary based on binding material, nature of application, and density. The document provides an overview of key materials used for building construction.