Introduction:
The ability to compare structural solutions to civil engineering problems is an important part of the role of a professional engineer. This allows comparisons of different structural forms
Learning Outcomes:
On successful completion of the assignment, the student should be able to:-
1. Produce and evaluate robust designs for structural steel, timber and reinforced concrete elements used in bridges, water retaining structures, portal frames and multi storey buildings. Justify the choice of material and design from a sustainability and CDM viewpoint.
The Brief:
This assignment requires students to produce a structural design report that illustrates their understanding of basic techniques used in structural engineering through the analytical and design of a structural problem.
Project:
An architect has passed over several preliminary drawings for you to size up a section of structural members so that initial costs for the project can be established. Design all the structural elements stated on the breakdown of assessments grid overleaf, use the diagrams provided to help you with this task.
A number of initial loadings have been provided to you. Note that not all the loads will be applied to every member and that the self-weight of the members need to be included with the permanent actions.
Permanent actions:
In-situ slab weight (150mm) = 3.75kN/m2
Precast slab weight (150mm) = 2.50kN/m2
Screed (50mm) = 1.20kN/m2
Assumed initial self-weight of steel beams = 0.084kN/m
Density of concrete = 25kN/m3
Bitumen and roof covering = 0.026kN/m2
140mm blockwork = 2.3kN/m2
Railing = 1.5kN/m
Variable actions
Classroom (category C13) = 3kN/m2
Self-weight of partition walls (not more than 2.0) = 0.8kN/m2
Roof = 1.5 kN/m2
Guidance:
1. State all assumptions that you make throughout your work
2. You may create your own structural model in excel, but evidence of the formulas used need to be provided in your submission.
3. Calculations completed need to be neat, readable and follow a logical flow
4. All element need to be designed to be efficient and not significantly over-engineered
Additional information:
Characteristic values of GL 24h glulam
Strength properties
Fm,g,k = 24N/mm2
Fc,0,g,k = 24N/mm2
Fc,90,g,k = 2.7N/mm2
Fv,g,k = 2.7N/mm2
Stiffness properties:
E0,g,mean = 11.6kN/mm2
E0,g,0.5 = 9.4kN/mm2
E90,g,mean = 0.39kN/mm2
Gg,mean= 0.72kN/mm2
Density
Pk = 380kg/m3
Partial factor for materials properties ym = 1.25
Design data for masonry wall:
Design lateral wind loading on the wall = 0.5kN/m2
Attestation of conformity for the units (manufacturing control): Category 1
Execution control of the masonry on site: Class 2
Standard format Group 1 clay units for outer and inner leaves
M6 mortar
Cavity width of 50mm
Assume air-dried, normalised compressive strength fb = 6.0MPa
Assume that the walls are part of the braced structure
Attachment:- structures-assignment.rar