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 reused and if the members are still capable.
Consider the following loads in solving the problem
Dead Load:Roofing metal deck, gauge
Insulation mm thick polysterene foam
Waterproofing liquid applied membrane
Ceiling mechanical duct allowance suspended metal lath and cement plaster
Selfweight of truss kNm
Live Load:
kPa
Steel Properties:Fy purlin steel truss members Mpa ksi
Fy column Mpa ksi
E steel Mpa ksi
Unit weight of steel kNm
PART
What is the total dead load to be carried by the purlins? kpa
What is the tributary width of the roof that will be carried by the purlins of the warehouse? m
What is the uniformly distributed DEAD LOAD that the purlins will carry consider purlin selfweightkN
Using LRFD load combo, what is the value of the Load combination, DL LLkNm
How much uniformly distributed load will be carried by the purlin along its Xaxis? Major axis?kNm
How much uniformly distributed load will be carried by the purlin along its Yaxis? Minor axis?kNm
If the purlins are simply supported along both axes, what is the bending moment along the Xaxis? kNm
If the purlins are simply supported along both axes, what is the bending moment along the Yaxis? kNm
Based on the section of the purlin, is the section COMPACT OR NONCOMPACT?
What is the Plastic Section Modulus of the section along the Yaxis Zymm
What is the Moment Capacity of the section Along the Yaxis MnykNm What is the critical length Lp where no Lateral torsional buckling will occur? m What is the unbraced length of the purlin Lbm
Is Lb Lp Yes or No
What is the Moment Capacity of the section along the Xaxis MnxkNm Using the Interaction Formula
Is the strength of the purlin adequate based on the interaction formula?
PART
Based on the diagram above, what is the tributary width that the truss will carry? m
Assuming the truss weight is kNm what is the uniformly distributed DEAD LOAD that the truss willcarry? kNm
Using LRFD load combo, what is the value of the Load combination, DL LLkNm
Assumming the truss is simply supported at its ends, what is the maximum compression force in the topchord? kN
Assumming the truss is simply supported at its ends, what is the maximum tension force in the bottomchord? kN
What is the unbraced length of the top chord along Xaxis? m
What is the unbraced length of the top chord along Yaxis? m
What is the critical unbraced length of the top chord? m
Using K what is the value of the critical KLr of the top chord?
Using Method A of Analysis of Compression Members, what is the value of phi Fcr based on the criticalKLr Use Fy ksi. Convert answer to Mpa
What is the value of the Ultimate Axial Strength of the Top Chord phi PnkN
Comparing the answer in Number and Number is the top chord adequate?
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