Calculate the velocity profiles us/use and un/use, where the velocity vector has been decomposed w.r.t. the flow direction just outside the boundary layer.

PROBLEM 2.C – Stagnation flow on an infinite swept wing

For the flow near the stagnation line of an infinite swept wing the numerical solution is given (see
table below) in the form of the nondimensional velocity profiles for the directions respectively perpendicular and parallel to the stagnation line, with:

Calculate the velocity profiles us/use and un/use, where the velocity vector has been decomposed w.r.t. the flow direction just outside the boundary layer, for the case that we/ue = 0.5. Scale the components with the outer flow velocity use: w+u = u eese 22

Calculate in addition for this case the cross–flow angle )( = )( e.

Give a graphical representation of the results as profiles of η; also, plot the velocity distributions in the form of a hodograph, i.e. us versus un.

Determine also for each case which (viscous) normal and tangential stresses work on the sides of the fluid element.

PROBLEM 1.E – Deformation and vorticity

Each of the expressions given below represents a two–dimensional incompressible flow field, with
velocity components u and v in resp. the x– and y–direction of a Cartesian coordinate frame:

(1) u = Ax v = –Ay

(2) u = Ay v = Ax

Here A is a constant, with dimension of [velocity/length]. Assume that A has a positive value.

Show that both velocity fields are irrotational and satisfy the (incompressible) continuity equation.

Determine for each flow field the shape of the streamlines en sketch the flow pattern (indicate the flow direction).

Determine for each of these flow fields how a square fluid element is transported and deformed by the flow over a small time interval Δt. Make a clear sketch for each case. Determine also for each case which (viscous) normal and tangential stresses work on the sides of the fluid element. Indicate these stresses in the sketch, noting the proper direction of the stresses and their relative magnitude.

Critically evaluate risks and uncertainities associated with the appraisal of construction and property developments.

Quantity surveying risk management

Assessed intended learning outcomes

On successful comple-on of this assessment, you will be able to:

Knowledge and Understanding.

1. Critically analyse various risk and value theories and techniques, demonstrating understanding of strengths, weaknesses, limita-ons and reservations of such theories and techniques;

2. Evaluate the difference between the concepts of cost and value and the importance of the cost/value relationship;

3. Develop and implement solu-ons to improve the effectiveness of risk and value management of construction and property appraisal;

4. Evaluate performance and productivity processes and prac-ces in cost and value control of construction and property ac-vity;

5. Critically evaluate risks and uncertainities associated with the appraisal of construction and property developments.

Discuss the role of resource leveling and effective management of the construction programme to achieve shorter construction time within the proposed housing development.

Construction Process Management

A housing developer has plans to develop a major residential estate in the outskirts of Manchester. They have put forward a plan to the local council to construct 100 housing units with other facilities, infrastructure and a recreation area. Their proposal also includes a localised urban drainage system so as not to put pressure on existing infrastructurefacilities and services. The developer has already suggested a shorter construction duration so that the commercial advantages can be realised earlier amidst several competing housing developments coming up in the area.

Due to the shorter length of construction, it is anticipated that the builders will incorporate an offsite

Assessment Informa-on/Brief

Manufacturer within their team to consider using such modern techniques to ensure
timely completion.

You are required to answer the following 4 parts based on the above scenario

Identify and Discuss the stakeholder engagement plan to optimise the participation of the stakeholders in this proposed housing development. indicative word count = 750 words

Discuss the role of resource leveling and effective management of the construction programme to achieve shorter construction time within the proposed housing development. Indicative word count = 500 words

The scenario mentions the incorporation of a ‘sustainable urban drainage system’ within the development. Briefly explain 5 possible ways in which such a scheme will positively impact the environment. Indicative word count = 250 words

What are the safety and risk factors to the community and environment?

Decision matrix

The nine most import criteria according to data obtained from(Figure 15) amended from ‘indicators of appropriateness’ responses(EWB Challenge, 2019a) were the influence for deciding on the five design criteria and the weighting factors.

Weighting factors were given a score out of 100 for importance and then given a rating out of ten for criteria. The final score was reached by multiplying the rating by the weighting factor, this formula resulted in the most suitable design option.

1. Functionality. How well will the design function for the community and is it practical?

2. Safety/Risk. What are the safety and risk factors to the community and environment?

3. Cost. How economically viable is the design for the community to construct and maintain?

4.Usability. How easy are the designs for the community to use, for both men and women?

5. Sustainability. How sustainable are the designs for long term management,maintenance:- physically, economically and environmentally?

Would increasing the relative thickness of the material be equivalent?

Plastic product design

Example 4.4 uses composite beam analysis by factoring the difference in material modulus of elasticity between the two materials times the width of the paint layer to “equalize” the materials in the composite.

Would increasing the relative thickness of the material be equivalent? (5 pts.)

There is a 12% error by not including the paint layer in the analysis, can you prove this? (45 pts.)

For reference see Example 4.3 and Session 6d for the analysis technique for composite beams.

Examine all structural elements and corresponding environment loads.

Service Life Design Report

To develop a durability plan for a twin bridges with a design life of 100 years.

Information:

1. A set of draft final design drawings of the twin bridges comprising:

Piles layout & 55o octagon driven piles

Abutments concrete & reinforcement

Pier concrete & reinforcement

Pre-cast pre-tensioned concrete plank

Deck concrete and reinforcement

Precast barriers

2. One borehole 3062 soil test results

3  Location of twin bridges ( an arbitrary location with marine tidal condition in the flood plain)

4  Additional design assuming tidal seawater in the flood plain

Outcome:

Student undertake a detailed durability design of the structure based on the specified environment exposure and construction methods of individual structural member. The service life design shall be conducted from first principle and final outcomes to be compared to service life design first principle and final outcomes to be compared to service life design from relevant Australian standards.

A service life design report outlines the durability design and justification for the design to satisfy the 100 years design life. The report needs to provide important durability-related specification of concrete (concrete mixes and cover) used in various bridge components & the corresponding construction method necessary to deliver successful project.

Note 1: Where concrete covers are specified in the structural drawings, use the nominated cover but select appropriate type of concrete for the cover used.

Note 2: There are differences in the expected quality of precast and in-situ concrete construction

Contents:

1. Examine all structural elements and corresponding environment loads

2. Conduct design life evaluation from first principle,and cross check the outcomes with relevant standards.

DO take into account how you can choose concrete and production process to avoid deterioration from Delayed Ettringite Formation (DEF) and Alkali Silica Reaction (ASR)

The results from the design are then compared to the solutions derived from the relevant Australian Standard for 100 years design life (AS 5100).

The SERVICE LIFE DESIGN report shall provide a summary of the concrete specification required for 100 years design life.

Examine the oyster waste model planning and pre treatment approaches and enhancement of the reused oyster waste binders.

The Development of Recycled Oyster Waste

Project Objectives and Pathways to Impact Statement

Project Objectives (1000 words)

1. Study the viability of utilising recycled oyster waste to change the qualities of concrete and roads

2. Assess the physical and mechanical properties of the transformed concrete, including penetration, softening point, flash and fire point, viscosity, specific gravity and rheological properties

3. Examine the oyster waste model planning and pre treatment approaches and enhancement of the reused oyster waste binders

4. Examine the mechanical properties of the changed concrete, including ductility,flexibility, strength, and impact resistance in building construction and roadways

5. Define the optimum combination of the mixture of reused oyster waste and cement

6. Compare and analyse the mechanical properties of the modified concrete with the conventional concrete.