As many culverts reach the end of their design life, the departments of transportation (DOTs) overseeing maintenance of road structures are in need of a model to track the existing culverts and forecast their remaining service life.
System identification is becoming more important in structural dynamic applications including structural model update, damage detection primarily due to the rapid increase in the number of damaged or deteriorated engineering structures, and load identification for remaining service life forecasting.
Therefore, the relative durability performance of these decks, compared to normalweight decks of similar ages and in similar service conditions, is of interest to many highway agencies to aid in prediction of performance over the remaining service life and in budgeting and forecasting for future repair, rehabilitation, and ultimately replacement.
The knowledge of internal stresses due to cyclic environmental conditions is necessary to forecast a possible damage occurrence in the material during its service life.
In this role, he again cooperated with Air Vice Marshal Wackett now the Air Member for Technical Services to introduce the concept of acquiring spare parts based on 'life-of-type', whereby the forecast number and type of spares necessary for an aircraft's projected service life would be ordered when it was first deployed operationally, to reduce support costs and delivery times.
This approach is taken by AWS Truepower, a consultancy, with its eWind forecasting service.
Jonno Wells, who runs a surf forecasting service in Orange County, falls among those who favor intervention.
"It's a 24-hour story," said Joel N. Myers, president and founder of AccuWeather, a forecasting service.
Now, Explorersweb provides text-message alerts to climbers' satellite phones, using precise Himalayas forecasts supplied by the Swedish government and a private forecasting service.
