Figure 4. Relationship between strength and cover to reinforcement (unfired)

From

Durability and Fire Resistance of Laterite Rock Concrete

Ephraim M. E., Adoga E.A., Rowland-Lato E. O.

American Journal of Civil Engineering and Architecture. 2016, 4(4), 117-124 doi:10.12691/ajcea-4-4-2