COSC 253 – Materials and Methods of Construction | Exam 2 Q&A (100+ Questions) – Wood, Framing, Divisions, Roofing

This document contains over 100 detailed and accurate exam questions with answers from Exam 2 of the COSC 253 2025/2026 course, covering materials and methods of construction with a strong focus on wood. It begins with foundational knowledge of tree physiology (bark, cambium, sapwood, heartwood) and types of wood (hardwood vs. softwood), then moves into lumber processing methods such as plain-sawn, quarter-sawn, kiln drying, and veneer slicing. Concepts such as moisture content (MC), shrinkage types, nominal vs. actual dimensions, and engineered wood products (e.g., glulam, CLT, LVL, OSB, SIPs) are clearly explained. The document also addresses heavy timber framing, structural grading, platform vs. balloon framing, panel products, preservative treatments, and fire-resistance. Important industry divisions from the CSI MasterFormat are listed and applied (e.g., Divisions 6, 7, 8, 9, 12, 21–23, 26). Roofing systems, underlayments, attic ventilation, ice damming, building wraps, and exterior insulation systems (EIFS) are also covered in detail. This study resource is ideal for students in construction science, architectural engineering, civil engineering, and related trades. It also benefits learners preparing for licensing exams or advanced coursework in structural systems and materials. Keywords: cosc 253, wood construction, tree physiology, moisture content, shrinkage, engineered lumber, glulam, clt, LVL, I-joist, SIP panels, nominal vs actual dimensions, structural grading, heavy timber, platform framing, roofing systems, attic ventilation, eifs, division 6, division 9, division 23, composite shingles, building wrap, kiln drying, OSB, sheathing, mockup, CSI divisions