Materials like SPF is given 400-600 kg/m3 as weight reference - but how can the program then calculate the weight of a wood structure - is it using the average value 500 kg/m3. Profiled beams on the other hand is given kg/m as reference.
My hollow core slabs, I should probably give kg/m as reference. Or can I simply use kg/m3 and then the program will calculate the true section area of the hollow core slab and then give the correct weight of one slab?? But if I want to have a material "concrete", that I will use primarily as a panel material, then I can make "concrete" in the same way as t.ex. OSB and give it 2450 kg/m3 as weight reference??? And then I will get correct weight of wall elements, etc. Would this work also on walls that I have already made a model of??