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Table 4.2.4cDrag Coefficient CD for Covered Footbridge-20° < a < -5° & +5° < a < +20°Drag Coefficient CDfor Deck with Rooffor RoofonlyDeck TypeRoof TypeFlatRoofVaultRoofDuopitchRoofFlatRoofVaultRoofDuopitchRoofSlab2.51.92.12.01.01.2Spine BeamBeam and Slab1.81.61.62.11.11.3Truss GirderSlab 1Spine Beam } with Solid ParapetBeam and Slab JSlab with Full Live Load2.02.1———--1.83.0————Notes : 1. The transverse wind load on deck and parapet shall be the transverse windload on deck with roof minus the transverse wind load on roof only.2. Refer BS 5400 : Part 2 for calculation of transverse wind load.— Test results not available.Table 4.2.4dLift Coefficient CLDeck TypeSlabSpine BeamBeam-and-SlabTruss GirderLift Coefficient CL for Covered Footbridge-20° < a < -5° & +5° < a < +20°Roof TypeSlab 1Spine Beam } with Solid ParapetBeam and Slab jSlab with Full Live Loadfor Deck with RoofFlatRoof-1.84-2,1»2.1+1.8-1,4+1.7-1.0+1.8VaultRoof-1.7+2.1-1.5+ 1.8——DuopitchRoof-1.7+2.0-2.1+1.7——for Deck onlyFlatRoof-0.7+0.9-1.2+0.9+0.6-0.7-0.1+1.4VaultRoof-0.6+0.9-1.1+0.7——DuopitchRoof-0.9+1.0-1.3+0.8——for Roof onlyFlatRoof-1.1+1.2-1.1+1.1-0.9+0.7-0.9+0.4VaultRoof-1.1+1.2-1.1+1.2——DuopitchRoof-0.8+1.0-0.8+1.0——Notes: 1. CL positive = upward wind load; negative = downward wind load2. Refer BS 5400 : Part 2 for calculation of vertical wind load.— Test results not available.