In: Operations Management
A swim club is designing a new pool to replace its old pool. The new pool would need to last for 10 years since the club is planning on relocating after 10 years. A concrete shell would cost $85,000 and last for all 10 years. Another option is to install a vinyl liner that would cost only $70,000 to install. However, the vinyl is not guaranteed to last for all 10 years, and it has a 40% chance of breaking down. Repair of the vinyl would cost $40,000 and would extend the life of the vinyl liner to the 10-year mark. If both options are acceptable to the swim club, which one minimizes cost?
The concrete cell has no additional cost in the life span of 10 years. The only cost is the installation cost which is $85000.
The swim club also has the option to install a vinyl liner which has an installation cost of $70000. This vinyl liner has a 40% chance of breaking down before 10 years and a 60% chance that it will not breakdown and last for 10 years. If it breaks, then the repair cost is $40000.
The expected additional cost for the vinyl liner if it breaks down = $40000 * 0.4 = $16000
The expected additional cost for the vinyl liner if it does not breakdown = 0 * 0.6 = 0
The total expected additional cost of the vinyl liner = $16000
The total expected cost = $70000 + $16000 = $86000
The minimum cost is $85000 which is of the concrete shell. The swim club should opt for the concrete shell.