Hello, I am currently working on my thesis and I am using Energy Plus to see the affects that thermal mass has on an ordinary building office made of concrete. Right now i am thinking also of simulating a ''lighter'' building made of steel and i am having some trouble on how to make the constructions of building components such as columns and floors. In the case of the column for example: - column size 50x50 - HEA 300 In the case of the floor the list of the materials is as follows: - Ceramic floor - stone wool - concrete floor - metal beam HEB 300 - stone wool - gypsum board Thanks in advance for your responses!