Structural Engineers design, plan and oversee the construction of new buildings and bridges, or alterations and extensions to existing properties or other structures. Structural Engineers are primarily concerned with designing and constructing buildings and structures that are safe and capable of withstanding the elements to which they will be exposed, as well as improving the structural integrity of existing buildings. The duties of Structural Engineers includes to preparing reports, designs and drawings. They are also engaged in making calculations about loads and stresses, selecting appropriate construction materials and providing technical advice. They also obtain planning and/or building regulations approval and monitoring and inspecting work undertaken by contractors, administering contracts, managing projects and inspecting properties to check conditions/foundations.