We can see from the steel bar symbol in the above picture that the secondary steel bar symbol is based on the round steel symbol, and there is a horizontal bar below; The symbol of tertiary reinforcement is to add a horizontal reinforcement above the symbol of secondary reinforcement; There are two vertical lines and one horizontal line under the ⅳ symbol. The mechanical properties and composition of round steel (first-grade rebar), second-grade rebar and third-grade rebar are different. The toughness and ductility of the first-grade steel bar are the best, while the third-grade steel bar has high carbon content and brittleness, but high strength.
In the word document, we open the start menu => and select the T SJQY font in the font box option (note that the input method "Input Method" is in the English input state at this time).
Hold down Shift +A to get Ф.