Open Access Original Research Article

An Attempt to Modify the Crop Coefficient Value of Wheat and Chickpea for Humid Subtropical Climate of Varanasi District, Uttar Pradesh

Chandra Kishor Kumar, Gaurav Sharma, Anshu Gangwar

Journal of Engineering Research and Reports, Page 12-20
DOI: 10.9734/jerr/2020/v13i117091

Crop water requirement is one of the essential components that should always be taken into account wherever water management strategies are adopted for effective utilization of water. In India agriculture is considered as the backbone of economy but nothing technical or advance technology has being adopted for its advancement and still major portion of agriculture are dependent on the verge of monsoon. Therefore crop coefficient (Kc) value for wheat and Chickpea as a function of relative humidity, wind speed and crop height has been formalized in this study for efficient use of available water. The empirical formula was applied for estimating Kc(mid) and Kc(end) values for humid subtropical climate of Varanasi. The corrected crop coefficient value of wheat for Kc(mid) was found to be 1.12 and for end season Kc(end) corrected was found to be 0.42. Mean maximum height of wheat crop in mid-season was obtained as 0.80 m and for the end season mean maximum height was found to be 0.99 m. The corrected crop coefficient value of Chickpea for midseason was found to be 0.98 whereas it was found out to be 0.38 at Kc(end). Mean maximum height of chickpea crop in mid-season was obtained as 0.39 m and for the end season of the crop mean maximum height was found to be 0.52 m. Crop coefficient curve for wheat crop was prepared in which X-axis represents time in days and Y- axis represents crop coefficient value for wheat. A third-order polynomial equation (y = -3E - 06x3 + 0.0005x2 - 0.0039x + 0.3702) has been obtained for wheat crop with correlation coefficient of 0.97. Similarly, graphical plot was constructed for chickpea crop and a third-order polynomial equation (y = -2E - 06x3 + 0.0002x2 - 0.0004x + 0.3732) has been obtained with correlation coefficient of 0.98. Furthermore, third-order polynomials were fitted well to predict the crop coefficient values as function of growing degree-days (GDD).

Open Access Original Research Article

Wind Analysis of High-Rise Building Resting on Sloping (Hilly) Grounds of Federal Capital Territory, Abuja, Nigeria

Roy O. Ononye, Kevin C. Okolie, F. O. Ezeokoli, S. C. Ugochukwu

Journal of Engineering Research and Reports, Page 21-34
DOI: 10.9734/jerr/2020/v13i117092

The importance of wind induced vibration is a key factor in the analysis, design and construction of high-rise building structures. Owing to scarce land resources, urbanization and ever-growing demand for accommodation is leading developers into sloping (hilly) grounds which in turn requires researches on the structural equilibrium of these structures. This study draws to mind the requirements of a fast-growing city of the Federal Capital Territory, FCT, Abuja considering her vast undulating planes and plateaus, high altitudes and windspeeds (50 m/s). Here therein, lies a comparative study of different types of building configurations and responses for sloping grounds using approaches form seismic analyses as a background to achieving set objectives. The study therefore, attempts the application of a commonly used method (Static Wind Analysis, SWA) for analysis of wind loads on structures and also understudying the outcomes of applying the same loads using dynamic method (Response Spectrum Analysis, RSA). STAAD Pro V8i software was used to synthesize both analyses using the ASCE 705 code (wind speed-up over Hills) on 40 models for each analysis method for a 3x5 planar building configurations (G+6, G+8, G+12 and G+18) on grounds (0°, 6°, 14°, 18°, and 27°). The findings confirmed the complexities of sloping ground buildings with a greater chance of vibration and sway for SWA than in RSA. It was concluded, that the Stepback-setback (STPB-SETB) frames were better configured to combat wind loads on sloping grounds for both analyses. Recommendations includes, prioritizing the construction industry, collaboration with international bodies on High-rise development, developing a data base and wind testing facilities.

Open Access Original Research Article

Clients Versus Consultants Assessment of Project Success in Nigeria

Ayodele Emmanuel, Ikudayisi, Akugbe Collins, Oviasogie

Journal of Engineering Research and Reports, Page 35-43
DOI: 10.9734/jerr/2020/v13i117093

The effectiveness of project delivery depends largely on the collaboration of the project actors. Yet the perception of success might be subjective and dependent on the individual’s opinion. This study assessed project success from clients versus consultants’ perspective. A cross-sectional survey of One hundred and two (N=102) project participants on recently completed building projects in Nigeria was sought. From the result, the client representatives ranked success level far lower than the consultant’s counterparts. These differences were observed with respect to the dimensions of the project success considered in varying magnitude. Particularly, the level of inconsistency in the project success assessment was found to be significantly different in terms of the project meeting functional requirements, client satisfaction, quality and absence of conflict. The overall success shows significant differences in the ranking of the project success among the two groups. This study provided evidence that differences exist in between client and consultants as regards project success judgement. Hence, the paper concludes that the establishment of clear project goals and aspirations among the key project actors right at the commencement of a project could help the success of the project management.

Open Access Original Research Article

Performance of Trickle Irrigation System on Growth and Yield of Garlic in Case Rabi and Kharif Seasons, Wonkakebele, Ethiopia

Dessie Gieta Amare

Journal of Engineering Research and Reports, Page 44-51
DOI: 10.9734/jerr/2020/v13i117094

Trickle irrigation is one and only of the water saving, progressive and advanced irrigation methods over gravity irrigation. In the point view of this, the research was lead to study the efficiency of Trickle irrigation over gravity irrigation in growth and yield of garlic in case Rabi & Kharif periods, wonka kebele, Ethiopia. The results indicated that trickle irrigation was well achieved greater over gravity irrigation method in terms of greater crop morphology, yield and quality of bulb. Trickle irrigation method documented maximum crop height (67.77 cm & 62.85), amount of leaves (10.25 & 8.00) and neck thickness (1.63 cm & 1.40 cm) in both Rabi and Kharif periods. The bulb equatorial and polar diameter, higher gross product in addition to marketable product achieved in trickle irrigation method. In trickle irrigation method, the gross product and marketable product improved by 12.54% and 22.63%, respectively in Rabi periods over gravity irrigation method and better water use productivity & as well saved 29.40% & 29.20% water for the period of Rabi & Kharif periods, respectively.

Open Access Review Article

A Review on Performance of Rice De-stoning Machines

O. A. Adetola, D. L. Akindahunsi

Journal of Engineering Research and Reports, Page 1-11
DOI: 10.9734/jerr/2020/v13i117090

The major challenge in Nigerian rice industry is poor processing which allows contaminants such as stone pebbles to be introduced during harvesting and post-harvest handling. Despite the several efforts of various researchers in Nigeria, no commercial rice de-stoning machine is available because the machines have not been optimized and tested for various machine parameters. This review showed the highlights, prospects, performance evaluations, and limitations of some rice de-stoning machines, de-stoning machine modified, and motorized rice de-stoning machine. Their unique advantages and operational parameters, for example, de-stoning efficiency, capacity, and operating speed were assessed. The de-stoning efficiency, capacity, and operating speed ranged from 40.8 - 99.75%, 1.8 – 7500 kg/h, and 200 – 2980 rpm respectively. Mechanization of the de-stoning process will ensure the quality and hygiene of products, thus increasing the commercial value of the final exported or consumed products.