Construction

Case Studies

1): Strong Tie (pdf)

Modern house building techniques increasingly call for factory assembled roof and flooring modules to minimise construction time 'on site' and reduce the requirement for skilled carpenters. Construction and installation of the modules is where Simpson Strong-Tie and their range of timber to timber and timber to masonry, steel connectors are required. They are the largest manufacturer of these products in the world.

2): Glenn o'Hawbaker (pdf)

Hawbaker was challenged with constructing the new limestone mining and production plant to fulfill a 10- year contract to supply a local power plant with high-calcium carbonate pulverized limestone. The limestone is part of a clean-coal technology the power plant uses to neutralize the sulfur dioxide emissions as part of the burning process of waste coal. The limestone will contribute to a 75% reduction in smokestack emissions. Reliability and up-time were the key concerns for Hawbaker. It is required to meet the power plant's contract of 750,000 tpy (tons per year) of pulverized limestone to avoid fines and penalties. In addition, the plant is located near a residential area, where production is limited by restricted operation of 12 hours per day, five days per week. Consistent, reliable production is crucial, as there is no opportunity to make up production on eekends.

3): Taiwan Cement (pdf)

In the past, cement manufacturers, including TCC, have used DCS solutions Rockwell Automation's Logix technology based solution for cement roduction process offers 60% faster reaction time, 30% less program time and 50% less cost than the previous DCS alternative. to control the cement production process in their facilities. But TCC came to realize it needed a steadier, more flexible, more cost effective system for one part of the process in particular.

TCC also determined that DCS reaction time – the responsiveness between the operation console and the control system – was too long and low for its purposes. Further, the company was vigilant to prevent any flaw in production quality – which could potentially affect its cement market share. In order to maximize throughput and consistency, and maintain the highest quality of cement, TCC needed a new control system.