width of beam as per the thumb rule width height of an element in javascript how to choose beam length and spacing entering loads horizontal members consider the following properties for steel beam design to ec3 metal decking roof system beam column design standalone reinforcing detailing of r c c members square beam slab systems resolving a drawing assignment instructions basic building parameters lecture notes javascript如何获取网页的宽高 以及如何兼 javascript如何获取网页的宽高 以及如何兼 owsj interate support structural javascript如何获取网页的宽高 以及如何兼 primary beam in advance bim designers