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  2. Hydraulic diameter - Wikipedia

    en.wikipedia.org/wiki/Hydraulic_diameter

    Using this term, one can calculate many things in the same way as for a round tube. When the cross-section is uniform along the tube or channel length, it is defined as [1] [2] =, where A is the cross-sectional area of the flow, P is the wetted perimeter of the cross-section.

  3. Manning formula - Wikipedia

    en.wikipedia.org/wiki/Manning_formula

    Units of n are often omitted, however n is not dimensionless, having dimension of T/L 1/3 and units of s/m 1/3. R h is the hydraulic radius (L; ft, m); S is the stream slope or hydraulic gradient, the linear hydraulic head loss loss (dimension of L/L, units of m/m or ft/ft); it is the same as the channel bed slope when the water depth is ...

  4. Concrete cone failure - Wikipedia

    en.wikipedia.org/wiki/Concrete_cone_failure

    Under tension loading, the concrete capacity of a single anchor is calculated assuming an inclination between the failure surface and surface of the concrete member of about 35°. The concrete cone failure load N 0 {\displaystyle N_{0}} of a single anchor in uncracked concrete unaffected by edge influences or overlapping cones of neighboring ...

  5. Four-point flexural test - Wikipedia

    en.wikipedia.org/wiki/Four-point_flexural_test

    Compared to the three-point bending flexural test, there are no shear forces in the four-point bending flexural test in the area between the two loading pins. [1] The four-point bending test is therefore particularly suitable for brittle materials that cannot withstand shear stresses very well.

  6. Equivalent radius - Wikipedia

    en.wikipedia.org/wiki/Equivalent_radius

    The area-equivalent radius of a 2D object is the radius of a circle with the same area as the object Cross sectional area of a trapezoidal open channel, red highlights the wetted perimeter, where water is in contact with the channel.

  7. Wetted perimeter - Wikipedia

    en.wikipedia.org/wiki/Wetted_perimeter

    The length of line of the intersection of channel wetted surface with a cross sectional plane normal to the flow direction. The term wetted perimeter is common in civil engineering , environmental engineering , hydrology , geomorphology , and heat transfer applications; it is associated with the hydraulic diameter or hydraulic radius .

  8. Precast concrete lifting anchor system - Wikipedia

    en.wikipedia.org/wiki/Precast_concrete_lifting...

    Suction area: A = w x h = 6.0 m x 3.0 m = 18 m 2; Assuming 1.0 kN/m 2 is applied for oiled steel formwork; Suction force: S = A x 1.0 kN/m 2 = 18 x 1.0 = 18 kN; Applied loads at element lifting (sling angle and lateral tension) F = W x Ksl x Ks x 0.5 = 64.8 x 1.16 x 1.2 x 0.5 = 45.1 kN; Anchor capacity for initial lift

  9. Chézy formula - Wikipedia

    en.wikipedia.org/wiki/Chézy_formula

    is the hydraulic radius, which is the cross-sectional area of flow divided by the wetted perimeter (for a wide channel this is approximately equal to the water depth) [m]; is Manning's coefficient [time/length 1/3]; and; is a constant; k = 1 when using SI units and k = 1.49 when using BG units.