Canvas Widgets
Canvas Widgets https://labellota02.tistory.com/entry/Canvas-Widgets
Bearing stress Criteria for Conventional Wall Foundations on Rock(KDS vs AASHTO)
AASHTO LRFD Bridge Design Specifications 4th SI units
Bearing stress Criteria for Conventional Wall Foundations on Rock
If e > B/6, σ_vmin will drop to zero, and as “e” increases, the portion of the heel of the footing which has zero vertical stress increases.
KDS 24 14 51 교량 하부기준 설계기준(한계상태설계법)
암반기초에 지지된 벽체의 지지력 기준
만약 e > B/6이면 σ_vmin은 0으로 떨어지고 “e”가 증가함에 따라서 연직응력이 D인 푸팅의 뒷굽의 부분은 증가한다.
여기서 연직응력이 D가 아니고 0이다.
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insert subscripts and superscripts inside a text region
insert subscripts and superscripts inside a text region Insert > Formular There is a shortcut Alt+=, but it does not work with the shortcut key while entering text in the text region. Insert > Formula
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Temperature effects_maturity
In the CEB-FIP Model Code 90 , maturity is a concept used to predict the rate at which concrete gains strength based on temperature and time. Eq. (2.1-87) is used to calculate the maturity-adjusted time $$ t_T$ $ , which accounts for the effects of temperature on concrete's strength development. \( S=\int d^{4} x\left(\frac{R}{2 \kappa}\right) \) begin{eqation} S=\int d^{4} x\left(\frac{R}{2 \kappa}\right) end{equation} Definition of Equation (2.1-87): The maturity-adjusted time $$tTt_T tT$$ is calculated as: $$tT=∫t0texp[QR(1T0−1T(τ))]dτt_T = \int_{t_0}^{t} \exp \left[ \frac{Q}{R} \left( \frac{1}{T_0} - \frac{1}{T(\tau)} \right) \right] d\tau tT=∫t0texp[RQ(T01−T(τ)1)]dτ$$ Where: tTt_T tT = maturity-adjusted time (in days) tt t = real elapsed time (in days) t0t_0 t0 = start time for the calculation (usually 0) QQ Q = activation energy for hydration process, typically around 33,500 J/mo...
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