A wood member is loaded as shown. Using ASD, determine the adjusted bending strength, Fb’. Assume normal temperatures, no incising, and that all loads act in the directions shown. Ignore the weight of the member.Load:PD = 2,000 lbPL = 0 lbPLr = 0 lbPS = 0 lbPR = 0 lbPW = 8,000 lbPE = 5,000 lbQD = 2,000 lbQL = 4,000 lbQLr = 5,000 lbQS = 0 lbQR = 500 lbQW = 0 lbQE = 0 lbSpan:L = 12 ft Member size:4 x 8 Stress grade and species:No. 1 Douglas Fir-Larch Unbraced length:lu = 0 ft Moisture content:MC < 19 percent 

Bonus Questions!  Note: the maximum score you can receive is 100 points.  Recently researchers mapped the ‘connectome’ of what organism and specifically what is the ‘connectome’? (2 points) How did scientists traditionally determine the structure of proteins? Recently, the Nobel prize was awarded to Alphafold 2.0. Why? (2 points)  

Capillary action occurs when water moves upward through a narrow tube against gravity due to the cohesive force between water molecules and the surface of the tube, and the adhesive force between water molecules.  

Use the AWC Manual for Engineered Wood Construction, 2018 Edition to answer the following question. An APA Rated Sheathing panel with a span rating of 24/16 is used with framing that is spaced at 22 o.c. Does the panel require edge support? Assume the panel is 24 inches or wider.

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 floor system is 24-in. o.c. Floor dead load = 18 psf. Floor live load = 125 psf. Floor sheathing is to be an APA rated OSB sheathing, and panels are to be oriented in the strong direction. The load is governed by bending and shear 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 40/20 be adequate?

Use the AWC Manual for Engineered Wood Construction, 2018 Edition to answer the following question. An APA Rated Sheathing panel with a span rating of 40/20 is used with framing that is spaced at 28 o.c. Does the panel require edge support? Assume the panel is 24 inches or wider.

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 rafters in a roof is 12-in. o.c. Roof dead load = 12 psf. Snow load = 73 psf. Roof sheathing is to be an APA rated plywood STRUCTURAL I sheathing, and panels are to be oriented in the weak direction. The load is governed by deflection limits of L/360 for snow load and L/240 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?

A wood column is pin connected at its top and bottom. Determine the controlling slenderness ratio, le/d, for the column. Assume normal temperatures, no incising, and that all loads are downward. Ignore the weight of the member.Load:PD = 1,500 lbPL = 2,000 lbPLr = 3,500 lbPS = 1,000 lbPR = 4,500 lbPW = 2,500 lbPE = 0 lbLength:L = 9 ftMember size:4 x 14Stress grade and species:No. 1 Douglas Fir-LarchUnbraced length:lu = L = 9 ftMoisture content:MC < 19 percent

A wood column is pin connected at its top and bottom. Determine the controlling slenderness ratio, le/d, for the column. Assume normal temperatures, no incising, and that all loads are downward. Ignore the weight of the member.Load:PD = 4,500 lbPL = 2,500 lbPLr = 1,000 lbPS = 500 lbPR = 4,000 lbPW = 4,000 lbPE = 0 lbLength:L = 8 ftMember size:4 x 10Stress grade and species:Select Structural Douglas Fir-LarchUnbraced length:lu = L = 8 ftMoisture content:MC < 19 percent

A pin-connected wood truss is loaded and supported as shown. Determine the axial force produced in member FG if PB = 700 lb, PC = 1,500 lb, PD = 2,900 lb, L = 6 ft, and h = 8 ft. Positive choices indicate tension. Negative choices indicate compression.