An Evaluation of Furniture Making Methods for Yachts
Emre Ergul,
Andrea Ratti,
Sebastiano Ercoli,
Arianna Bionda
Issue:
Volume 2, Issue 6, November 2017
Pages:
205-211
Received:
12 July 2017
Accepted:
28 July 2017
Published:
8 January 2018
Abstract: There are mainly three different methods of furniture making for yachts as on-site method, mock-up method and computerized method. On-site method is the oldest and traditional way which has been developed by old talented wooden boat builders. In fact, the method is still alive in many small boatyards where the artisans apply the techniques learned by their masters. Mock-up method separates the construction process into two: boat building and furniture making. Hull, bulkheads, engines installation, mechanical and electrical infrastructure, all are made by a boatyard and furnitures are made by a sub-contractor, which indicates the furniture making is a specialization. Computerized method is the advanced way, developed in the last decade. All furnitures are drawn phase by phase by the sub-contractor's design team in detail and after the drawings are approved, production starts. Time planning, a clear definition of work sharing and responsibility are the key issues of this contemporary system. Within the scope of this study, all methods are explained widely. This study depends on an empirical research realized in furniture making companies and boatyards. Knowledge gained by both unstructured observations of making processes and interviews with responsible persons. Data is evaluated by qualitative methods. It is an attempt to understand the case and in line with its complementary understanding approach, a deductions set is given together with the observations and interviews in each making method. Then, four variables are determined to evaluate the furniture making methods: a. boat size and purpose of use, b. equipment and organizational capacity of furniture company, c. making time, and d. tolerance for decision changes. As a conclusion, three different methods of furniture makingdemonstrate three different work scales, but not the quality of end product.
Abstract: There are mainly three different methods of furniture making for yachts as on-site method, mock-up method and computerized method. On-site method is the oldest and traditional way which has been developed by old talented wooden boat builders. In fact, the method is still alive in many small boatyards where the artisans apply the techniques learned ...
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The Performance of the Low Cost Masonry Cement Blocks as a Partial Substitution of Coconut Shell Ash
Pius Rodney Fernando,
Sahabdeen Mohammed Aazir,
Namasivagam Pushpalatha,
Nadarajah Puvanakanthan,
Vidana Heneyalage Theegis Nishantha
Issue:
Volume 2, Issue 6, November 2017
Pages:
212-220
Received:
1 October 2017
Accepted:
10 November 2017
Published:
11 January 2018
Abstract: Aim of the research was to investigate the effect of Coconut Shell Ash (CSA) with cement as a partial substitution in the production of alternative cement blocks to subsist conventional ones. Utilization of this natural agro waste material helps to prevent the environmental pollution, reduces the construction cost as well as contributes to sustainable construction. Therefore, 90 blocks of 450 mm × 150 mm × 225 mm masonry cement blocks of mixing value 1:6 were cast, cured and tested after 7, 21 and 28 days. CSA was substituted at 0 to 50 wt.% at 5% intervals. The materials were mixed well with the addition of sufficient water. The maximum compressive strength and flexural strength of 300 kg/cm2 and 12.52 kg/cm2 were recorded at 5% supersession at the 28th day, respectively, which is found congruous and recommended for building construction having procured a 28th day compressive strength of more than 280 kg/cm2 as required by the Sri Lankan Standards. The compressive and flexural strengths of the cement / CSA blocks generally decrease as the percentage of CSA content increases. However the dry density, water absorption, compressive strength and flexural strength results conclude that the 10% CSA addition is the optimal value for the production of environmental friendly low cost alternative cement blocks.
Abstract: Aim of the research was to investigate the effect of Coconut Shell Ash (CSA) with cement as a partial substitution in the production of alternative cement blocks to subsist conventional ones. Utilization of this natural agro waste material helps to prevent the environmental pollution, reduces the construction cost as well as contributes to sustaina...
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