Mr. Littleton was interviewed about carpentry and building construction. He discussed that wood products, concrete, brick and plastics are common building materials. Important safety factors are experienced workers, quality materials and good leadership. The building process starts with land preparation, then the foundation and framing are constructed. Tornado ties are used to secure walls and roofs during severe weather. Tall buildings have many floors to maximize space efficiently. He has been a carpenter for 25 years and was motivated to study it because his grandfather was also a carpenter.