A floor opening in a building is to be closed by pouring a concrete slab. The proposed framing is composed of wood joist assumed to be simply supported and given with a total load of 4 kPa. What is the maximum flexural stress in 40 mm x 190 mm wood joist if its span is 3 m and spaced at every 0.30 m on centers? a. 5.61 MPa    c. 6.78 MPa b. 7.23 MPa    d. 4.65 MPa What is the maximum shearing stress in the said joists? a. 0.40 MPa    c. 0.36 MPa b. 0.69 MPa    d. 0.54 MPa

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Members with compression and bending

Compression members are structural elements that carry compressive axial force. They are the vertical members of a building that support beams and their design, which is governed by buckling and strength. Columns are known as struct or compression members, which are subjected to compressive forces. These members provide stiffness to the building and avoid any imperfection regarding the transfer of axial load. For instance, webs in a truss, braces in a framed structure, tiers, and so on.