Determine a suitable strand layout for the member

Reference no: EM133548530

Advanced Prestressed Concrete

Task 1 - Design of Post-tensioned Beam and Slab (Worth 300 marks)

Aim
The aim of this task is to allow you to demonstrate your understanding of the various concepts and processes developed in this course for post-tensioned systems.

You are requested to submit the solution for the below task (Figure 1). The task consists of a suspended floor for a carpark building. The proposed solution is a post-tensioned slab and band beam system.

You are required to design the most economical and functional structural members for the slab and central band beam (along gridline 2) only. Your answer for this task should include the necessary design calculations, sketches, and comments where necessary. It should include the following:

a) Calculations of applied bending moments and shear forces for the slab and central band beam.

b) Determine a suitable tendon profile for the applied loads and design for service and strength limit states (including flexure and shear).

c) Design of anchorage zone, bearing and bond for the slab and the beam.

d) Estimation of losses (including short term and long term as appropriate).

e) Calculation of deflection (both short term and long term).

f) Detailing (sketches giving necessary details to complete construction is sufficient).

Notes: (1) Use AS3600 -2018 version or any other standard relevant to overseas students.
(2) Any assumptions made in the design should be clearly mentioned.
(3) All the relevant clause numbers from the standard should be included in the right- hand side of your design calculations page.

Task 2 - Design of Pre-tensioned Bridge Deck Unit

Aim
The aim of this task is to allow you to demonstrate your understanding of the various concepts and processes developed in this course for pre-tensioned systems.

You are requested to submit the solution for the below task (Figure 2). The task consists of a simply supported pre-tensioned bridge deck unit/girder that has to span a distance of L. You are required to design the most economical and functional bridge deck unit/girder. It is recommended that you select a standard Transport and Main Road (TMR) standard deck unit (refer Appendix A). Alternatively, you may use a similar I girder from assignment 1.

Your answer to this task should include the necessary design calculations, sketches, and comments where necessary. It should include the following:

a) Determine a suitable strand layout for the member. Note that the strands must be straight, no kinks or drapes are permitted. (Note: if using TMR deck unit, check if the existing strand layout can be optimised).

b) Design of the member for strength limit states (including flexure and shear). Provide a section detail showing the strand layout and any additional reinforcement required.

c) Estimation of losses (including short-term and long-term as appropriate).

d) Check the member for deflections. Is the girder a fully prestressed member?

Task 3 - Reflect on Pre and Post-tensioned Systems

Reflect on the differences you have noticed in the design process of pre-tensioned and post- tensioned systems from the previous tasks.

Discuss the advantages and disadvantages of each system (pre-tensioned and post-tensioned) from a design perspective as well a construction perspective. What applications would each system be used for? Discuss at least 3 applications for each system.

Attachment:- Advanced Prestressed Concrete.rar

Reference no: EM133548530

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