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Which is not a suggestion for living longer that is supported by research?

Which of the following is the leading cause of Unintentional Injury death in the United States? 

Find the reduced roof live load for a one-story building which has columns evenly spaced every 30 feet in the north-south direction and 21 feet in the east-west direction. The building has an ordinary pitched roof with a slope of 7 inch/foot.

According to data, which of the following is not a potential negative behavior demonstrated in adolescence?

Determine the rain load, R, on a flat roof given the following data.Vertical distance from primary roof drain to scupper inlet, ds = 4.0 in.Vertical distance to top of rain water above scupper inlet, dh = 3.9 in.

The two columns in the following floor framing plan support only loads from a theater with fixed seats on the second floor. The city has approved floor live load reductions for this particular building. A dead load of 12.7 psf acts on the tributary area of the columns. Combine this with the reduced floor live load, and then determine the total load that acts on one of the columns.

You have been tasked with designing a one-story barn. The mean roof height is 25 ft, and the roof angle is 20 degrees. The basic wind speed has been provided by the local building authority and is 115 mph. Assume that exposure category D is applicable and that the building is not located on a hill or an escarpment. Also assume that the building is an enclosed simple diaphragm and that the building meets all eight conditions listed in ASCE 7-10 section 28.6.2. Determine the simplified design wind pressure, ps30, on Zone A of the Main Wind Force Resisting System using the Simplified Envelope Procedure.

A dead load of 15 psf acts on a roof with a 8/12 inch/inch pitch. Determine the equivalent flat-roof load.

A dead load of 11.2 psf acts on a roof with a 10/12 inch/inch pitch. Determine the equivalent flat-roof load.

The following roofing materials are stacked on a pallet at a construction site. The pallet is 3 ft by 8 ft, and the materials have been cut and stacked so that each layer completely covers the pallet. Use ASCE 7-10 to determine the total dead load resting on the pallet.7 layers of asphalt shingles9 layers of deck, metal, 20 gage4 layers of plywood, 3/8-in. thick