allest cross-section to carry an axia

Steel Design Two channels having the given properties shown is placed at a distance of 300 mm to back and is properly connected by a pair of lacings as shown.  Properties of one channel A = 5595 mm2 d = 305 mm x = 17mm Ix = 67.3 x 106 mm4 Iy = 2.12 x 106 mm4 rx = 19.3 mm  Assume K = 1.0 Determine the safe axial load in kN, that the column section could carry. Unsupported height of column is 6m.

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Determine the design strength of the beam(properties given below) and the safe service live load if the service dead load is 320 kN.m.Use f'c =22 Mpa and fy=415 MPa. given properties: b=400 mm d'=70 mm d=620 mm As=10-28 mm A's=3-25 mm bars hello please answer this thanks ☺️