Building Economics

  

 

 

 

Building Economics

 

Student Full Name

Institutional Affiliation

Course Full Title

Instructor Full Name

Due date

Building Economics

 Procurement

Cost estimation for Central Kitchen Building

Estimated expected profit

The total area for the proposed site is 1.7 ha(17000m2) The central kitchen building estimated area= 5100m2
The profit estimation breakdown A.    Proposed total cost B.    Financing cost C.    Overhead and general cost D.    Marketing cost E.    Expected profit	Estimated cost a.     £11,282,952 b.     £148,780 c.     £287,226 d.     £141,821 e.     £280,752
Construction cost breakdown                                      Expected costs
1.     Construction permits 2.     Impact and environmental fee 3.     Water and sewer inspection 4.     Excavation foundation and backfill 5.     Framing and trusses 6.     Sheathing 7.     Windows 8.     Exterior doors 9.     Interior doors 10.  Stairs 11.  Gutters and downspouts 12.  Plumbing 13.  Electrical wirings 14.  Lighting fixtures 15.  HVAC 16.  Insulation 17.  Drywall 18.  Painting 19.  Cabinets 20.  Trim materials 21.  Tiles and carpets 22.  Landscaping and sodding 23.  Wood deck patio 24.  Cabinets and countertops 25.  Another contingency cost	1.     £122,564 2.     £43,654 3.     £76,754 4.     £3,334 5.     £9,768 6.     £6,789 7.     £8,904 8.     £1,245 9.     £67,778 10.  £98,766 11.  £45,667 12.  £45,765 13.  £6,677 14.  £87,643 15.  £45,453 16.  £61,234 17.  £23,412 18.  £34,213 19.  £67,432 20.  £8,123 21.  £3,214 22.  £4,354 23.  £7,890 24.  £56,754 25.  345,565
Total cost	£11,282,952

            The economic advantage of investing in such a project is valid because the building would realize a profit of close to 300 000 euros annually. The building of the structure is speculative in that the users are unknown. Real estate developers, property owners, and potential tenants do not sign a lease agreement before construction begins on anything speculative. And one is presuming that given the market has X, Y, and Z demand drivers and determinants, they will likely be able to secure a renter before the property has completed construction. The investment is profitable if the owner could use inexpensive materials in the central kitchen building that are classy to make the kitchen look attractive.

 

Central Kitchen Building Outline

There is no such thing as a one-size-fits-all solution for kitchen space. So, how can one choose the optimal layout without considering variables such as the chef’s demands, whether or not one wants their kitchen to be a social center and the necessity for a nearby eating area? These considerations weigh significantly on their choice to pursue one design concept over another. In addition, the limited square footage sometimes affects the final design (Bröchner, 2018, p. 09). If one does not have a custom-built house, they will have to make do with the quantity and arrangement of accessible space to devise a plan. In this post, they will learn about the most typical kitchen layouts and how to make them more useful and aesthetically appealing. The two parallel walls of a corridor-style kitchen are about 48 inches apart when the cabinets are fitted. Corridor kitchens are popular in corridors, flats, and even some smaller single-family homes. They are narrow and tight. Corridor-style kitchen layouts are good since they make it easy to access all of the required facilities. Kitchens in corridor-style houses make greater use of available floor space since they may be hidden from view.

 

Figure 1

 

 

 

 

          

The proposed Kitchen outline shows a rough delimitation of the kitchen plan as proposed

Program

As shown below, certain takes within the construction period start with the project and go on for quite some time. For instance, collecting data on the environmental impact starts from the pre-construction face, during, and after the project’s implementation. The main reason for this program is to help the planner to buy materials and bring necessary equipment on site.

 

Figure 2

The construction project schedules show when an activity starts and when they are expected to end.

Issues

Planning implications

For years, the construction company has been known for spending more than budgeted and having completion dates that are longer than planned. These things have been especially true in large public construction projects, where cost overruns and delays have become the norm for a long time now. Expense overruns have become a significant financial risk for both customers and contractors. They also affect how profitable the project will be in the long run. Academics, auditors, and people in the field have come up with a wide range of solutions, from technical and financial to psychological and political. As a result, the contractor’s role has been given more attention than the client organization’s. In the construction phase, this construction proposal considers the public client’s concerns about cost overruns and delays in the project’s timetable when making the plan. In addition, it looks at the effects of cost overruns and time delays to give a complete picture of how the client’s work affects their costs, time, and sustainability needs.

Socio-Economic Issues

The social-economic issue under the context of the construction of a central kitchen building in such an extensive, reasonably isolated place includes; affordability, consumers price regulations and constraints that come with price regulations, and finally, the social acceptability of the project. The proposal preempts future customer demand for urban development and aims to tap into the potential markets. The socio-economic issue brought about by this proposal is the future acceptability of the project. It comes up with contingency plans to make the central kitchen building be straightforward t convert for the various issue in case the idea of using the allotted room fail to sell or become obsolete for future generations.

Health and Safety in Surrounding Areas.

The construction sector is known to contribute significantly to environmental pollution. Therefore, this project proposes using a green building approach to avert health risks before, during, and after the construction of the infrastructure. The Safety of the construction workers will be closely monitored, and the proposal suggests the use of paramedics to respond to construction injuries. Furthermore, during are suggestions to use materials that do not produce a lot of dust during construction and minimize noise pollution. Such will safeguard the health and Safety of the surrounding.

 

Reference

Bröchner. J (2018) Construction economics and economics journals. Construction Management and Economics, 36:3, 175-180, DOI: 10.1080/01446193.2017.1410197

 

 

Fatigue Test Report- Lab Report

  

 

 

 

Fatigue Test Report

 

Student’s Name or Students’ Names

Department Affiliation, University Affiliation

Course Number: Course Name

Instructor’s Name

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Fatigue Test Report

Abstract

This experiment's goal is to demonstrate how fatigue testing works in practice. The specimen for this experiment was mild steel. This report contains an overview of the study's objectives, a description of the equipment used, and an explanation of the theory behind the experimental design. The results and a graphical depiction of the experiment, as well as the technique employed to get them, are provided.

Nomenclature

·       This is called sigma and here is represents σ the stress in ib/in.

Introduction

While the maximum stress is smaller than the yield stress and hence the final stress, metal fatigue is a well-known situation in which yielding (and subsequently rupture) may be initiated by a significant number of stress changes (magnitude and direction) at a spot. For a fatigue failure to occur, tensile stress must first induce a minor crack at a macro or micro fault. As soon as the crack starts, it forms in a place where there is a change in the material, such a keyway, a hole, or a change in cross section. Fatigue failure may also occur in less obvious places, such as internal fractures or flaws caused by machining procedures. When a metallic specimen is subjected to a force below its yield strength, localized hardening develops. Then a little crack appears, which acts as a line of greatest stress and encourages further growth. The material fails because its cross sectional area decreases as the crack grows. Fatigue loading refers to the force that breaks the material down, while fatigue failure describes the resulting crack.

Experimental methods

The fatigue-testing machine

This tabletop equipment may be used to learn the foundations of fatigue testing. In this experiment, a point force is delivered to a spinning metal test rod that is clamped at one end via spring balancing. As a result, the cylinder experiences cyclic bending strain. The cyclic loading amplitude may be continuously adjusted using a threaded spindle and a hand wheel. After a given number of load cycles, the specimen fails due to material fatigue. The machine comes to a halt as soon as the stop button is pushed.  A digital number shows how many times the load has been put on and taken off. Using equations (1) and (2), the starting weight load for each level of stress (.9y, 0.8y, 0.7y, and 0.6y) was calculated (Marcantonio et al., 2019).. We know that 6061-T6 has a yield strength (stress) of 275 MPa and an ultimate strength of 310 MPa. (Davis, 1990). Then, equations (3)–(5) were used to figure out the expected number of cycles before the part breaks (6). The number of cycles went up as the yield strength went up.

 

Data

Results

In the lab, they tested the effects of 0.90y, 0.80y, 0.7y, and 0.6y of stress. After amassing enough information, researchers analyzed the correlation between stress and the lifespan of a component. We started our investigation by averaging the total number of cycles at each stress level before failure occurred. Subsequently, the standard deviation was calculated. The number of laboratory cycles and the loaded weights at each stress level are shown in Table 1.

σ =125 7/PrI (ib/in2) (1)  I = πd464

 

Notably, fatigue failure may occur even if the stress never approaches the material's elastic limit. In the elastic range, fatigue failure normally occurs about 105 stress cycles (high cycle fatigue). When enormous loads create plastic deformation, much fewer stress cycles are necessary for failure (low cycle fatigue). Because elastic formulas cannot be depended on to reliably anticipate stress levels at this time, strain against cycle count is used to quantify low-cycle fatigue.

Discussion

Due to the inherent heterogeneity of the material and the likelihood of error during loading, the anticipated number of cycles to failure for numerous specimens differed significantly from the actual number of cycles to failure. We utilized Chauvenent's criteria to locate outliers in the dataset. A sample size of N = 12 yields a dmax/s value of 2.03%, with N = 12 trials for each stress level. After the outlier was removed from the data, it was statistically reanalyzed to provide a new mean and standard deviation. The data was utilized to create an S-N diagram (see Figure below). Using this stress versus cycle data, it is feasible to calculate an endurance limit of 85.0 MPa at 5x108 cycles. The error margin is one standard deviation from the predicted number of cycles before failure.

When data before and after Chauvenent's is compared, the later reveals a more linear trend. This one alteration threw the whole linear paradigm that determines one's physical and mental boundaries into disarray (Murakami et al., 2021).. As expected, the AlMgSi alloy utilized in its fabrication exhibits a decreasing S-N curve with increasing cycle number. The data-based limit of durability was derived using Nref = 5 x 108 cycles for nonferrous metals..

Conclusion

This experiment demonstrates that fatigue is a material attribute that is compositionally dependent. Materials tend to degrade slowly but swiftly when subjected to low cycle loads. Because of the high chance of major mistakes, results from this laboratory should not be relied. The quantity of various units involved may make the initial computations challenging. To ensure that everyone is using the same technique, verify the loadings "P" using a full example calculation with all units. Furthermore, the material quality is poor. Because of the manufactured nature of the specimens, direct comparisons may not provide trustworthy results.

 

References

Marcantonio, V., Monarca, D., Colantoni, A., & Cecchini, M. (2019). Ultrasonic waves for materials evaluation in fatigue, thermal and corrosion damage: A review. Mechanical Systems and Signal Processing, 120, 32-42.

Murakami, Y., Takagi, T., Wada, K., & Matsunaga, H. (2021). Essential structure of SN curve: Prediction of fatigue life and fatigue limit of defective materials and nature of scatter. International Journal of Fatigue, 146, 106138.