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  1. f'c < 2500 psi | Eng-Tips

    Mar 5, 2009 · I know the ACI 318 states that concrete shall have a minimum f'c of 2500 psi. I have a situation where 28 day, 56 day, and even some cored breaks have come in lower (around 2000 psi). …

  2. Formatting Text - MATLAB & Simulink - MathWorks

    Formatting Text To convert data to text and control its format, you can use formatting operators with common conversion functions, such as num2str and sprintf. These operators control notation, …

  3. Class F vs class C flyash | Eng-Tips

    Oct 16, 2012 · Which one is the more common type of flyash for general residential and smaller commercial projects (sog, foundation wall, basement wall etc)? When to use one class vs the other? …

  4. Cost difference between f'c = 4 vs 5 ksi | Eng-Tips

    Jun 24, 2013 · We have some 12'x12'x3' footings that we originally spec'd out as 4 ksi. For the sake of appendix-D (tension on ABs) I think we need to go to 5 ksi. Is there a huge cost difference between …

  5. dsolve - Solve system of differential equations - MATLAB

    S = dsolve(eqn) solves the differential equation eqn, where eqn is a symbolic equation. Use diff and == to represent differential equations. For example, diff(y,x) == y represents the equation dy/dx = y. …

  6. ilaplace - Inverse Laplace transform - MATLAB - MathWorks

    f = ilaplace(F) returns the Inverse Laplace Transform of F. By default, the independent variable is s and the transformation variable is t. If F does not contain s, ilaplace uses the function symvar.

  7. Why Chilled Water Supply Should be Under 5°C/42°F? | Eng-Tips

    Dec 21, 2021 · Hi All, Currently, I'm working at HVAC system which delivered 3°C of chilled water to the HVAC system with 8-9°C return (5-6°C/11°F delta temperature). The HVAC spec manual specifies …

  8. fplot - Plot expression or function - MATLAB - MathWorks

    This MATLAB function plots the curve defined by the function y = f(x) over the default interval [-5 5] for x.

  9. CSTR Model - MATLAB & Simulink - MathWorks

    CSTR Model The adiabatic continuous stirred tank reactor (CSTR) is a common chemical system in the process industry, and it is described extensively in [1]. A single first-order exothermic and irreversible …

  10. sprintf - Format data into string or character vector - MATLAB

    C/C++ Code Generation Generate C and C++ code using MATLAB® Coder™. In formatSpec, hexadecimal numbers must be in the range [0 7F] and octal numbers must be in the range [0 177]. If …