BEIN

The load on the supports of a container is calculated according to AD-S3/0 and evaluated for standard profiles according to DIN 1024 ... 1029 are evaluated. Weight forces G and shear forces Q can be specified. If the maximum normal force according to AD-S3/3 is exceeded, a stability verification according to DIN 18800 part 2 is performed.

·         With uniform support on n feet or claws, the maximum compressive force N_Fd on a single element can be calculated according to AD-S30 Section 4.4.

·         Anchoring is necessary if 4M/d_F > 0.7 G_z Eq. (5) 

·         The maximum tractive force is N_Fz 

·         If no uniform load distribution can be ensured by the support, n=3 at the most must be calculated!

·         The Euler buckling force F_k is calculated according to Dubbel paperback Maschinenbau, Springer 1997, Chapter C Strength of Materials, p.42.

·         The equations for the profile stresses s _D, t_D compressive and s _Z, t_Z tensile result from the static equilibrium conditions.  

·         For the case j=0 and e_G=0, the bending stress corresponds to Code of Practice AD S3/3, equation (7a).  

·         According to AD-S3/3, the stability verification according to DIN 18800/2 can be omitted for N_Fd<0.22*E_F*I_F/h_F^2

·         The load on the base plate can be calculated according to AD-S3/3 with module S33.

Fig.: Eulerian load cases

AD-S3/0 section 4.3.4, allowable calculation stress for pressure vessels; load case:

1.   Operation: Permissible calculation voltage s_zul = f = K/S, K = characteristic value, S = safety factor according to AD-B0 during operation

2.   Test case f_P = K/S', S' = Safety factor Test case according to AD-B0

3.   Assembly f_M = K/SM, S_M = S -a (S- S'); a = 1 for short-term load; a = 0.5 for longer load

4.   Special case f_S = K/SS, S_S as for assembly with a = 1.25, but S_S > 1.