Structural reinforcement drawing for gantry portal foundations at Acaraú II substation. This plan details two foundation types: BP1 (4 units) with R=90cm circular base and BP2.1-2.6 (13 units) with R=52cm circular base. Both utilize CA-50 grade steel (fyk>500 MPa) reinforcement bars.
Key Specifications:
– BP1: 37 N1 Ø8mm c/20 bars (C=620cm) and 30 N2 Ø16mm c/20 bars (C=592cm)
– BP2.1-2.6: 37 N1 Ø8mm bars (C=380cm) and 21 N2 Ø16mm c/20 bars (C=592cm)
– Total steel weight: 4,821 kg (CA-50)
– Structural concrete: fck>25 MPa
– Base concrete: fck>9 MPa
– Soil bearing capacity: 0.10 MPa (to be field-verified)
The drawing includes cross-sectional details at 1:25 scale showing precise bar spacing and embedment requirements. Foundation design accommodates equipment mounting with specific attention to embedment depth as noted in reference drawings.
