3000 psi
By using IS code(456-2000) for reinforced cement concrete.
It is the length of the main bar provided at the column beam junction or column footing junction to allow for the development of stresses to its design strength.
The minimum covering of reinforcement for roof slab is 30mm
Stihl web page lists minimum as 110 lbs of compression
10 psi
25kg to 50kg /m3 of concrete
120 psi minimum
maximum spacing assording to IS 456 = 300mm
The minimum diameter of stirrups in reinforced concrete design typically depends on the specifications outlined in relevant building codes and standards, such as ACI, Eurocode, or local regulations. Generally, the minimum diameter is often set at 6 mm (1/4 inch) for normal conditions, but this can vary based on factors like concrete strength, exposure conditions, and the size of the main reinforcement. Always consult the applicable codes for precise requirements for your specific project.
40 times diameter
It should have a minimum of 70 psi.
87 - 04 compression standard 121 psi minimum 114 psi max 128 psi