Speed of construction is defined as the rate in which concrete building is raised and can be expressed in terms of number of floors erected per week or months. Speed of construction can be also measured in terms of inches or millimeters of concrete poured per hour. Formwork operations can control the pace of construction projects.

Озадачило только последнее предложение, м.б. потому что мне даже его смысл непонятен. Просветите, please.… Заранее благодарю!