An interior continuous beam shown in figure below carries its own weight plus an additional uniform service dead load of 0.5 k/ft and a uniform service live load of 1.2 k/ft. Design the beam for positive moment (between supports, B and D) and negative moments (at intermediate support; C). Draw the design cross-sections and the elevation of the beam showing the reinforcement location. (Use drafting software for design drawings) Material Properties: Concrete Strength = 5000 psi, normal weight concrete: Grade 60 steel. A D 26 ft 26 ft Note: 1. Service load = unfactored load 2. While estimating the design moments, one should consider the live load placements to generate maximum positive and negative moments. 3. You can use RISA to do structural analysis. for moment of inertia of beams, you can use 0.4 Igross Problem 2: In an oil refining plant, a simply supported beam with U-shape cross section supports a 10 in. diameter pipe carrying crude material. The beam spans a distance of 24 ft. The beam is subjected to a service deadload of 1.4 k/ft (not including self-weight of the beam) and service live load of 1 k/ft. Design the reinforcement needed in the beam support the load. Draw the design cross- section (Use drafting software for design drawings). Material properties: 4000 psi concrete; Grade 60 steel 10 in. pipe U beam greater than 20