13 1
For shackles with safe loads greater than the maximum shown, use Crosby-Laughlln The Crosby Group, Div. of American Hoist amp Derrick Co, Tulsa, OK 74101 . Skookum Skookum Co., Inc., Portland, OR 97203 , or equal with an ultimate strength at least 5 times the safe working load. For shackles with safe loads greater than the maximum shown, use Crosby-Laughlln The Crosby Group, Div. of American Hoist amp Derrick Co, Tulsa, OK 74101 . Skookum Skookum Co., Inc., Portland, OR 97203 , or equal with an...
Allowable Buckling Stress In Cylindrical Shells [1420
A metal cross-sectional area, in.2 B ASME Code allowable stress, psi C end connection coefficient, use 1.0 for simply supported and 2.0 for cantilevered Cc. max allowable slenderness ration per AWYVA D-100 D OD of cylinder, in. E modulus of elasticity, psi e tolerance for peaking, in. FS factor of safety Fv minimum specified yield strength, psi F , allowable longitudinal compressive stress, psi 1 moment in inertia, in.4 Lc length at which critical stress is achieved, in. 1 tolerance for...
Seismic Designvessel On Unbraced Legs [47
A cross-sectional area, leg, in.2 V base shear, lb W operating weight, lb n number of legs Cv vertical seismic factor Ch - horizontal seismic factor y static deflection, in. Fv vertical seismic force, lb F , horizontal seismic factor, see Procedure 3-3 F l allowable axial stress, psi F , allowable bending stress, psi F, - seismic force applied at top of vessel, lb F'. Euler stress divided by safety factor, psi fi maximum eccentric load, lb V horizontal load on leg, lb Fn maximum axial load, lb...
Design Of Base Details For Vertical Vessels 2
E modulus of elasticity at design temperature, psi Ab cross-sectional area of bolts, in.2 d diameter of bolt circle, in. VVb weight of vessel at base, lb WT weight of vessel at tangent line, lb w width of base plate, in. S code allowable stress, tension, psi N number of anchor bolts allowable bearing pressure, concrete, psi Fv minimum specified yield stress, skirt, psi Fs allowable stress, anchor bolts, psi fLT axial load, tension, lb in.-circumference fix axial load, compression, lb...
2 Qem
If a vessel is designed for less than 15 psi, and the external pressure condition is not going to be stamped on the nameplate, the vessel does not have to be designed for the external pressure condition. Figure 2-1 b. External pressure cones 22 112 lt a lt 60 . For Case B, L . L For Cases A, C, D, E Figure 2-1e. Geometrie chart for components under external or compressive loadings for all materials . Reprinted by permission from the ASME Code. Section VIII, Div. 1. Figure 2-1e. Geometrie chart...
21
Welding Journal Research Supplement, December 1955, pp. 608-617. Bijlaard, P. P., Stresses from Radial Loads and External Moments in Cylindrical Pressure Vessels. Welding Journal Research Supplement, December 1954, pp. 615-623. Megyesy, E. F., Pressure Vessel Handbook, 3rd Edition, Pressure Vessel Handbook Publishing Co., 1975, pp. 72-85. Zick, L. P., Stresses in Large Horizontal Cylindrical Pressure Vessels on Two Saddle Supports, Welding Research Journal Supplement, September 1951. Moody, G....
References Lfo
1. Magnusson, I., Design of Davits, Fluor Engineers, Inc., Irvine, Ca. 2. Roark, R. J., Formulas for Stress and Strain, 3rd edition, McGraw-Hill Book Co., 1954, Article 44, p 146. 3. Naberhaus, E. Paul, Structural Design of Bins, Chemical Engineering, February 15, 1965, pp. 183-186. 4. Lambert, F. W., The Theory and Practical Design of Bunkers, British Constructional Steelwork Association, Ltd., London. 5. API-620, Recommended Rules for Design and Construction of Large, Welded, Low-Pressure...
Discontinuity Stresses
Vessel sections of different thickness, material, diameter, and change in directions would all have different displacements if allowed to expand freely. However, since they are connected in a continuous structure, they must deflect and rotate together. The stresses in the respective parts at or near the juncture are called discontinuity stresses. Discontinuity stresses are necessary to satisfy compatibility of deformation in the region. They are local in extent but can be of very high...