What is the wet service factor, CM, for the bending strength of softwood glulams?

A 15-ft-long, simply-supported beam supports a concentrated dead load of 265 lb at its center. Determine the maximum bending moment in the beam.

Use APA Technical Note Q225 entitled Load-Span Tables for APA Structural-Use Panels and ASD procedures to answer the following question.The spacing of joists in a flat roof is 40-in. o.c. Roof dead load = 5 psf. Snow load = 51 psf. Roof sheathing is to be an APA rated plywood sheathing, and panels are to be oriented in the strong direction. The load is governed by deflection limits of L/240 for snow load and L/180 for total load. Only consider these limits. Assume multi-span, normal duration of load, dry conditions, and panels 24 inches or wider. Would a panel with a span rating of 32/16 be adequate?

Use APA D510 Panel Design Specification to answer the following question. What is the predominant performance category that corresponds to APA Rated Sheathing with a span rating of 24/0?

Find the reduced roof live load for a one-story building which has columns evenly spaced every 13 feet in the north-south direction and 30 feet in the east-west direction. The building has an ordinary pitched roof with a slope of 1 inch/foot.

Find the reduced roof live load for a one-story building which has columns evenly spaced every 26 feet in the north-south direction and 27 feet in the east-west direction. The building has an ordinary pitched roof with a slope of 11 inch/foot.

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 110 mph. Assume that exposure category B 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 adjustment factor for building height and exposure, λ, for the Main Wind Force Resisting System using the Simplified Envelope Procedure.

The following roof framing plan shows girders, purlins, and subpurlins. If a dead load of 11.15 psf acts on the tributary area of one of the columns, determine the equivalent point load that acts on the column.

The following roof framing plan shows girders, purlins, and subpurlins. If a dead load of 11.54 psf acts on the tributary area of one of the columns, determine the equivalent point load that acts on the column.

The following roof framing plan shows girders, purlins, and subpurlins. If a dead load of 11.39 psf acts on the tributary area of one of the columns, determine the equivalent point load that acts on the column.