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七、梁的构造要求(一)受力钢筋1.直径:当梁高≥300mm时,d≥10mm。当梁高<300mm时,d≥6mm。一般不宜用大于28mm的钢筋,特殊情况例外。2.间距:下部纵向钢筋的净距a≥d,且≥25mm。上部纵向钢筋的净距b≥d,且≥30mm。当钢筋配置多于两排时,第三排以上钢筋的净距应加倍。(二)钢箍1.直径:当梁高≤250mm时,d≥4mm。当250mm<梁高≤800mm时,d≥6mm。当梁高>800mm时,d≥8mm。
VII. Structural Requirements of Beams (I) Forced Reinforcement 1. Diameter: When the beam height is ≥300mm, d≥10mm. When beam height is less than 300mm, d≥6mm. It is generally not recommended to use steel bars larger than 28mm, with the exception of special cases. 2. Spacing: The net length of the lower longitudinal reinforcement is a≥d and ≥25mm. The net spacing of the upper longitudinal reinforcement b≥d, and ≥30mm. When there are more than two rows of reinforcing bars, the net distance of the third row or above should be doubled. (b) Steel hoop 1. Diameter: When the beam height is ≤ 250mm, d≥4mm. When 250mm< beam height ≤800mm, d≥6mm. When beam height> 800mm, d ≥ 8mm.