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# Higher National Certificate/Diploma in Construction and the Built Environment

Assignment Brief

 Unit Number and Title 20 Principles of Structural Design Academic Year 2020/21 Unit Tutor Assignment Title Bending Moments & Shear Forces with Beam Design Considerations

 Submission Format Students will submit: calculations, including workings, to show their achievement of a solution to the assigned questions short written statements, explaining: statutory requirements for structural designs safety factors for live loads, dead loads and imposed loads determined in calculations evaluating how bending moments determine steel beam selection analysing support methods and deflection effective support methods based on ease and speed of construction, economics and safety analysing materials for their capacity and resistance to corrosion and weathering.

 Unit Learning Outcomes: 20 Principles of Structural Design LO1 Calculate bending moments and shear forces for simply supported steel and concrete beams. LO2 Determine deflection for simply supported steel beams LO3 Calculate the axial load carrying capacity of steel and reinforced concrete columns LO4 Explore design methods for steel, reinforced concrete beams and columns

# Unit 20 Principles of Structural Design

To calculate the axial load carrying capacity of steel and reinforced concrete columns

(a) A short reinforced concrete column3.75m long of square dimensions 350mm square with steel bar reinforcements has 6 no 25mm bars (area= 2950mm2). Determine the axial load carrying capacity of this column. Confirm firstly that the column is short.

(b) Select an equivalent steel column section that can carry this axial load safely and economically stating all your steps.

(A) Describe the concepts of slenderness ratio and effective length in the design of both steel and reinforced concrete columns separately, and comparing them appropriately.

(B) Determine the exact axial load carrying capacity of the selected steel column section provided above.

(C) Explore and analyse the load carrying capacity, size, weight and corrosion resistance properties of different materials used for beams and columns in fixed structures.

Explore design methods for steel, reinforced concrete beams and columns

A Hotel guest house building one storey high has a beam first floor identified as 8m long on two simple column supports. The beam is carrying a UDL of 55KN/m. Each column is axially loaded by 4 such identical beams.

(A) Develop two design solutions, one in steel and the other in reinforced concrete, for this stated beam and the support column for this given scenario, comparing their corresponding costs for the beam both in steel and in reinforced concrete and also for the column in both steel and reinforced concrete as well.

(B) Produce drawings and specifications in support of the structural design solutions above.

(C) Evaluate the use of an alternative material, different from concrete or steel, in achieving a design solution, discussing the benefits and challenges so associated.

(D) Assess the use of Building Information Modelling in the production of accurate structural design information and the collaborative environment of structural design.

# Unit 20 Principles of Structural Design

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