As long as you adhere to the maximum unsupported length calculated using a

Slenderness Ratio of 100, it is impossible for an ejector pin to collapse as a result of the material's plastic pressure on the face of the pin.

Each of those buildings has a total footprint area, which was chosen to be 676 [m.sup.2], which is slightly smaller than the 800 [m.sup.2] footprint of 432 Park Avenue depicted in Figure 2 (Ho 2016); a square slender tower in New York that reached 426 m, with a

slenderness ratio of 1:15 (smallest width to height ratio).

where K(/[k.sub.z] is the

slenderness ratio of the column, and E is Young's modulus.

When the

slenderness ratio of the column is low as in Figures 18(b) and 19 (stocky column), it is unlikely for the column to buckle especially when the applied axial load is much smaller than the column Euler buckling load (244 x 105 N for column section W200 x 71 with one end fixed).

Table 1 shows the member length L (mm), the

slenderness ratio A, the cross-sectional secondary radius i (mm), and the sectional area A (mm2).

where [lambda] is the

slenderness ratio of the element, [[lambda].sub.p] is the limiting width-to-thickness parameter for compact element (2.26 [square root of (/E/[F.sub.y])]), [[lambda].sub.r] is the limiting width- to-thickness parameter for noncompact element (3.00 [square root of (E/[F.sub.y])]).

Length (mm) Wideness (mm) Thickness (mm) SR G1 11.28 2.76 1.36 4.90 (0.71) G2 6.67 1.60 0.67 4.58 (0.57) FF a' ([cm.sup.2] [g.sup.-1]) G1 2.29 (0.50) 53.81 G2 2.84 (0.53) 103.84 Where: G1 and G2, particles size; SR,

slenderness ratio; FF, flatness factor; a', superficial area of particles; and (...) coefficient of variance.

The percentage decrease in the deflection of the composite column having

slenderness ratio of 40 is about 6.9% for change in concrete strength from M15 to M25 and 4.7% for change in concrete strength from M25 to M35.

(3) The

slenderness ratio only influences the magnitude of the pressure profile.

Slenderness Ratio. The aspect ratio or the

slenderness ratio can significantly govern the behavior of high-rise buildings under wind.

The other definitions in the above equations include: module of elasticity of the rod material E; geometrical moment of inertia for solid circular cross-section I = [[pi]d.sup.4]/64, where d is a diameter of piston rod; [L.sub.e] is an effective length depending on the type of mounting, n is a safety factor, [lambda] is a

slenderness ratio ([lambda] = 4[L.sub.k]/d); critical slenderness [??] here [R.sub.e] is a yield strength of the piston rod material.

According to Perry-Robertson formula (1925) there were tested about 200 samples for buckling test on I H T U circular and square section about

Slenderness ratio 55 to 160, the imperfection is adopted [e.sub.0]/L = 1/1000.SSRC (Structural stability research council) 1979, Deterministic [e.sub.0]/L = 1/1000 adopted in CAN3S16.1-M84 (1974, 1978, 1984), SANS Code, Probabilistic [e.sub.0]/L = 1/1470.ECCS (European Convention for Constructional Steelwork) 1972 conducted more than 1000 buckling tests on I H T U circular and square section SR 55 to 160 more than 112 column curve produce, [e.sub.0]/L = 1/1000.