Simplified method for filling and discharge

Bulk Material Density Method

1 For silos, where dc is less than 5m a simplified method for considering filling and discharge processes may be applied. In this procedure, the patch loads according to 5.2.1 and 5.2.2 may be adjusted by increasing the horizontal pressures. 2 For concrete silos, silos with stiffeners and silos with non circular cross-sections shapes the increased horizontal pressures for filling Phf,s and discharge Phe,s are Phf is calculated from expression 5.3 Phe is calculated from expression 5.21 b is...

Normative references

This European Prestandard incorporates by dated or undated reference, provisions from other standards. These normative references are cited in the appropriate places in the text and publications listed hereafter. ISO 3898 1987, Basis of design for structures Notations. General symbols. NOTE The following European Prestandards which are published or in preparation are cited at the appropriate places in the text and publications listed hereafter. ENV 1991-1, Eurocode 1 Basis of design and actions...

Flat bottoms

Concrete Silo Design

1 Vertical loads acting on fiat or shallow silo bottoms inclinations a lt 20 shall be calculated as follows pvt Cb pv 5.13 pv is calculated using expression 5.4 Cb is a bottom load magnifier to account for the uneven load distribution calculated using expression 5.14 Figure 5.2 Side elevation and plan view of the patch load Figure 5.2 Side elevation and plan view of the patch load 1 P When a gt 20 see Figure 5.3 the pressure normal to the inclined hopper wall pn is calculated as follows x is a...