Uploaded on 2014-10-17 by yenhor

![THE USE OF STEEL IN BUILDING CONSTRUCTION][2]Steel are being used in many ways such as reinforcement, erecting scaffolds and door/window frames. ![Staircase Error][3] [1]: http:// [2]: http:// [3]: https://edxuploads.s3.amazonaws.com/14135376963691729.jpg