Question: Please do a computation not a statement answer. Will give a like if you solve it and a dislike if you give statement answer. PROBLEM

Please do a computation not a statement answer. Will give a like if you solve it and a dislike if you give statement answer.
PROBLEM Description
A section of an existing steel warehouse is shown below. The warehouse is constructed of different steelsections for its purlin, truss and column members. You were asked to perform an investigation if the steelwarehouse can be re-used and if the members are still capable.
Consider the following loads in solving the problem
Dead Load:Roofing metal deck, 20 gauge
Insulation -25mm thick polysterene foam
Waterproofing liquid applied membrane
Ceiling mechanical duct allowance + suspended metal lath and cement plaster
Selfweight of truss 10 kN/m
Live Load:
0.96 kPa
Steel Properties:Fy (purlin, steel truss members)248 Mpa (36 ksi)
Fy (column)345 Mpa (50 ksi)
E (steel)=200,000 Mpa (29,000 ksi)
Unit weight of steel =77 kN/m3
PART 1
1. What is the total dead load to be carried by the purlins? (kpa)
2. What is the tributary width of the roof that will be carried by the purlins of the warehouse? (m)
3. What is the uniformly distributed DEAD LOAD that the purlins will carry (consider purlin selfweight)?(kN/)
4. Using LRFD load combo, what is the value of the Load combination, 1.2DL +1.6LL?(kN/m
)5. How much uniformly distributed load will be carried by the purlin along its X-axis? (Major axis?)(kN/m
)6. How much uniformly distributed load will be carried by the purlin along its Y-axis? (Minor axis?)(kN/m)
7. If the purlins are simply supported along both axes, what is the bending moment along the X-axis? (kN-m
)8. If the purlins are simply supported along both axes, what is the bending moment along the Y-axis? (kN-m)
9. Based on the section of the purlin, is the section COMPACT OR NON-COMPACT?
10. What is the Plastic Section Modulus of the section along the Y-axis (Zy)?(mm^3)
11. What is the Moment Capacity of the section Along the Y-axis (Mny)?(kN-m)12. What is the critical length Lp, where no Lateral torsional buckling will occur? (m)13. What is the unbraced length of the purlin (Lb)?(m)
14. Is Lb < Lp ?(Yes or No
)15. What is the Moment Capacity of the section along the X-axis (Mnx)?(kN-m)16. Using the Interaction Formula
17. Is the strength of the purlin adequate based on the interaction formula?
PART2
1. Based on the diagram above, what is the tributary width that the truss will carry? (m
)2. Assuming the truss weight is 10 kN/m, what is the uniformly distributed DEAD LOAD that the truss willcarry? (kN/m
)3. Using LRFD load combo, what is the value of the Load combination, 1.2DL +1.6LL?(kN/m
)4. Assumming the truss is simply supported at its ends, what is the maximum compression force in the topchord? (kN
)5. Assumming the truss is simply supported at its ends, what is the maximum tension force in the bottomchord? (kN
)6. What is the unbraced length of the top chord along X-axis? (m
)7. What is the unbraced length of the top chord along Y-axis? (m
)8. What is the critical unbraced length of the top chord? (m
)9. Using K=1.00, what is the value of the critical KL/r of the top chord?
10. Using Method A of Analysis of Compression Members, what is the value of \phi Fcr based on the criticalKL/r? Use Fy =36 ksi. (Convert answer to Mpa)
11. What is the value of the Ultimate Axial Strength of the Top Chord \phi Pn?(kN)
12. Comparing the answer in Number 4 and Number 11, is the top chord adequate?

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