The Steel Workshop S16-2009: What's New? - CISC-ICCA
The Steel Workshop S16-2009: What's New? - CISC-ICCA
The Steel Workshop S16-2009: What's New? - CISC-ICCA
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17 Composite beams, trusses, and joistsM rc & cIn order to align <strong>S16</strong> and A23.3, changes were made in <strong>S16</strong> to c , the concrete stress block and hence to the expressionto determine the lever arm.While c increases from 0.60 to 0.65 there is an offset with theintroduction of 1 1 = 0.85 – 0.0015 f’ c 0.67 1 and C’ r<strong>The</strong> compressive force in the concrete is then taken as follows:C’ r = 1 c bf’ cThis then affects the calculation of lever arm, e’.<strong>S16</strong> -<strong>2009</strong>What’s <strong>New</strong>?