Jinsi ya kukokotoa Rebar Spacing
Rebar Spacing ni nini?
Reinforcement bar spacing determines concrete coverage and structural capacity. Adequate spacing ensures proper concrete consolidation and strength.
Mwongozo wa Hatua kwa Hatua
- 1Minimum spacing typically 1.5× bar diameter or 40 mm, whichever is larger
- 2Account for aggregate size (spacing > 1.3× max aggregate diameter)
- 3Calculate based on cover requirements and member width
Mifano Iliyotatuliwa
Ingizo
#25 rebars (25 mm), clear cover 50 mm, beam width 400 mm
Matokeo
Maximum ~4 bars fit with 50 mm spacing
Detailed calculation
Makosa ya Kawaida ya Kuepuka
- ✕Neglecting concrete cover in spacing calculations
- ✕Over-crowding reinforcement in small beams
Maswali yanayoulizwa mara kwa mara
Why space rebar widely?
Concrete must flow around bars; tight spacing creates voids, reducing strength.
What if spacing is too tight?
Concrete won't fully consolidate; hidden voids reduce strength and durability.
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