Singapore Fire Safety Engineering Guidelines 2015_1.pdf

8 integrated fire fighting and protection systems

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( 8 ) Integrated fire fighting and protection systems testing under both fire alarm activation and power failure condition. ( 9 ) Any other endorsements made on mechanical ventilation and fire protection plans. Annex H2
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Annex I Determining Load/Capacity Ratio for Structural Steel Step 1 - Calculating Temperature of structural member in fire condition using CFD modeling and hand calculations (higher temperature to be adopted) Step 2 - Calculating the Structural Capacity under Elevated Temperatures in accordance with P291, Structural Design of Stainless Steel. Three capacity components at elevated temperatures are calculated: - Compression resistance, P c - Buckling resistance moment about major axis, M b - Moment capacity about minor axis, M c Step 3 - Obtaining the Fire Load on the Structure Structural engineer has developed the structural model for further analysis At fire loading case: 1.0 Dead Load + 0.33 Wind Load (as per BS 5950-8 (2003) - Removed the critical structural member impinged by flame from the model - Load will redistribute to remaining structure Obtained the resultant loadings on remaining structural elements from the model (as a result of the removal of the critical structural element affected by fire) - Axial force, F c - Bending Moment 1 (BM1) - Bending Moment 2 (BM2) Hand calculated the equilibrium uniform moment factors per BS5950-1:200 - m LT - m y Step 4 - Check Load/Capacity Ratio Perform load/capacity ratio check for each all structural members using the values from Step 2 and Step 3 Load-Capacity ratio 1. Annex I
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