WASHINGTON (AP) — U.S. construction spending increased 1.4% in August, led by a surge in spending on single-family homes. The Commerce Department reported Thursday that the August gain was double the 0.7% increase seen in July. Spending on residential construction was up 3.7% with a 5.5% rise in spending on single-family homes offsetting a 0.1% drip in apartment construction, a smaller an more volatile sector. Spending on nonresidential construction fell by 0.3% with hotels, office building and shopping centers all suffering declines. Total government construction was up a slight 0.1% with spending on highway projects up 1.9%.