Hopleys Open Web Steel Joists Brochure.PDF - BJH

11Section PropertiesJOIST CHORD JOIST RADIUS MOMENTTYPE AREA MASS OF GYRATION OF INERTIAHJ150 288mm 2 2.78kg/m r yy = 20mm I xx = 1.52 x 10 6 mm 4HJ200 288mm 2 2.89kg/m r yy = 20mm I xx = 2.82 x 10 6 mm 4HJ250 288mm 2 3.04kg/m r yy = 20mm I xx = 4.52 x 10 6 mm 4HJ300 288mm 2 3.11kg/m r yy = 20mm I xx = 6.62 x 10 6 mm 4HB300 606mm 2 6.00kg/m r yy = 19.6mm I xx = 9.70 x 10 6 mm 4HB350 606mm 2 6.10kg/m r yy = 19.6mm I xx = 13.9 x 10 6 mm 4HB400 606mm 2 6.20kg/m r yy = 19.6mm I xx = 18.9 x 10 6 mm 4HB450 606mm 2 6.30kg/m r yy = 19.6mm I xx = 24.5 x 10 6 mm 4Structural JoistG300G35016mm20mm1.6mmthick20mm1.6mm20mm1.6mm20mm50mm53mm50mmStructural JoistsAdditional to our Standard range, Hopleys can alsodesign and manufacture customised Large SpanTrusses to suit your specific application in a range ofwidths and depths.®Hopleys large span beams generally feature DURAGALrectangular hollow sections, which means extra strengthand superior corrosion protection.Should you require any further information or advice,please contact our Engineer.