Jobsite spending on nonresidential building construction fell 1.6% in September. The decline is not balanced. Spending for commercial buildings has fallen 34%% since the peak in early 2008. Most of the deep decline in this market is now over. Spending for institutional buildings has dropped 3%% since the peak earlier this year. Most of the shallow decline in this market is still ahead. Manufacturing spending peaked four months ago and has now fallen 14%. Most of the very steep decline in this market is still ahead. It will consist of sharp cuts in energy-related project. Starts for these projects are already much lower. The value of nonresidential construction starts has rebounded from a deep drop in June — which will be the low point in this building cycle — but no further improvement is expected until well into next year. With the project pipeline drained, nonresidential construction spending will inch lower through the winter.