Support Lug Calculations Calculations : Operating Operating Case
INPUT ECHO OF SUPPORT LUG INPUT
Type of Geomet r y : Guss et s wi t h Top Pl at e Number ber of Supp Suppor or t Lugs Nl ug 4 Di st ance ance f r om Vessel OD t o Lug Cont ont act Poi nt Dl Dl ug 203 203. 0000 000 Lug Supp Suppor or t For ce Bear i ng Wi dt h Wf b 75. 75. 0000 0000 Lug Mat er i al SASA- 240 240 304L 04L Lug Yi el d St r ess 132. 32. 15 Radi adi al Wi dt h of bot bot t om Supp Suppor or t Lug Pl at e Wpl 253 253. 0000 000 Ef f ect i ve For ce Bear ear i ng Lengt Lengt h Lpl 250 250. 0000 000 Thi ckness of bot bot t om Supp Suppor or t Lug Pl at e Tpl 12. 12. 0000 0000 Di s t ance bet ween Guss et s Dgp 200. 200. 0000 0000 Mean Wi dt h of Guss et Pl at e Wgp 158. 158. 0000 0000 Hei ght ght of Gusset Pl at e Hgp 350. 350. 0000 0000 Thi ckness of Guss et Pl at e Tgp 9. 0000 0000 Radi adi al Wi dt h of Top Bar Pl at e Wt p 70. 70. 0000 000 Thi ckness of Top Pl at e Tt p 12. 12. 0000 0000 Pad Wi dt h al ong Ci r cumf er ence Pad Lengt h al ong ong Vess el Axi s Pad Thi ckness Bol t Bol t User Bol Bol t
C11P 11P C22P 22P Tpad
Mat eri al Al l owabl abl e St r ess at Desi gn Tem Temper per at ure Speci f i ed Root oot Ar ea of a si ngl ngl e Bol t Di amet er
Results Results for Support Lugs:
mm. mm. N. / mm² mm. mm. mm. mm. mm. mm. mm. mm. mm.
300. 300. 000 000 mm. 430. 430. 000 000 mm. 8. 000 000 mm. SA- 193 B7 172. 72. 38 N. / mm² 3. 2400 400 cm² 24. 24. 00 mm.
Description: LUG SUPPO SUPPORT RT
Over t ur ni ng Moment ent at Supp Suppor or t Lug Wei ght Load at t he t op of one one Lug
1790 1790.. N- m 7945 7945.. N
Force on one Lug, Operating Condition [Flug]: = ( W/ Nl ug + Ml ug/ ( Rl ug * Nl Nl ug/ ug/ 2 ) ) = ( 31778/ 4 + 1790/ ( 961. 00 * 4/ 4/ 2 ) ) = 8875. 875. 85 N Top Bar Plate Stress per Bednar p.154 [Stpl]: = 0. 75*( Fl ug*D ug*Dll ug*Lpl *Lpl ) / ( Ttp*Wt p² *Hg *Hgp ) = 0. 75*( 8875 8875 *203 *203. 000 000 *250 *250. 000 ) / ( 12. 0000 0000 *70. *70. 000² *350 *350. 000 ) = 16. 42 N. / mm²
Requ equi r ed Thi Thi ckness of Top Pl at e
2. 2361 361 mm.
Bearing Area [Ba]: = Lpl Lpl * Wf b = 250. 50. 000 000 * 75. 75. 000 000 = 187. 87. 50 cm² Bending Stress in bottom Plate (Unif. Load) Per Bednar p.156 [Spl2]: = Bet a1 * Fl ug/ Ba * Wf b² / Tpl Tpl ² per Roar Roar k & Youn Young g 5t h Ed. Ed. = 2. 105 * 887 8875 5. 8/ 187. 500 500 * 75 75. 000² 00² / 12. 000² 00² = 38. 93 N. / mm²
Bot t om Pl at e Requ equi r ed Thi Thi ckness ckness ( Uni f orm Load) Load)
7. 9766 766 mm.
Bottom Plate Required Thickness based on ADM S 3/4 [trAD]: = 0. 71 * Dgp * ( ( Fl ug / ( Lpl Lpl * Wf b ) ) / Spa ) ½ = 0. 71*200. *200. 00*( 00*( ( 8875/ ( 250. 00*75. *75. 00) ) / 88. 102) 02) ½ = 10. 10. 409 409 mm. Note: If using the AD Code recommendations, the force bearing width (Wfb) must
be greater than or equal to 1/3 of the bottom plate radial width (Wpl) plus the pad thickness (Padthk), if there is a pad. Bottom Support Plate Allowable Stress [Spa]: = 2/ 3 * Yl ug = 2/ 3 * 132 = 88. 10 N. / mm² Gusset Plate Axial Stress ( Force / Gusset Plate Area ) [Sgp]: = ( Fl ug/ 2 ) / ( Wgp * Tgp ) = ( 8875/ 2 ) / ( 158. 000 *9. 0000 ) = 3. 12 N. / mm²
Requi r ed Thi ckness of Gusset s per AI SC
3. 8842 mm.
Gusset Plate Allowable Stress [Sga]: = ( 1- ( Kl r ) ² / ( 2* Cc ² ) ) * F y / ( 5/ 3+3* ( Kl r ) / ( 8 *Cc ) - ( Kl r ³ ) / ( 8* Cc ³ ) = ( 1- ( 155. 56 ) ² / ( 2 * 166. 72² ) ) * 132/ ( 5/ 3+3*( 155. 56 ) / ( 8* 166. 72 ) - ( 155. 56³ ) / ( 8*166. 72³ ) = 38. 97 N. / mm² Maximum Compressive Gusset Plate Stress per Bednar [SgpB]: = Fl ug*( 3*Dl ug- Wpl ) / ( Tgp* Wpl ² * ( Si n( Al ph_G) ) ² ) = 8875 *( 3*203. 000 -253. 000 ) / ( 9. 0000 *253. 000² *( Si n( 61. 50 ) ) ² ) = 7. 10 N. / mm² Gusset Plate Allowable Compressive Stress [SgaB]: = 18000/ ( 1+( 1/ 18000) *( Hgp/ Si n(Al ph_G) / ( 0. 289*Tgp) ) ² ) = 18000/ ( 1+( 1/ 18000) * ( 350. 000/ Si n( 61. 50 ) / ( 0. 289*9. 0000 ) ) ² ) = 53. 90 N. / mm² Note : There was no uplift. Please choose an appropriate bolt size for this support design.
Input Echo, WRC107 Item
1,
Description: LUG SUPPORT
Di ameter Basi s f or Vessel Cyl i ndr i cal or Spheri cal Vessel I nt ernal Cor r osi on Al l owance Vessel Di amet er Ves sel Thi ckness
Vbasi s Cyl sph Cas Dv Tv
Desi gn Temper at ur e
150. 00
At t achment Type Par amet er C11 Par amet er C22
Type C11 C22
Thi ckness of Rei nf or ci ng Pad Pad Par amet er C11P Pad Par amet er C22P Desi gn I nt ernal Pressur e I ncl ude Pressur e Thr ust Vessel Vessel Vessel Nozzl e Nozzl e Nozzl e
Cent er l i Cent er l i Cent er l i Cent er l i Cent er l i Cent er l i
Gl obal Forc e Gl obal Forc e
ne ne ne ne ne ne
Di r ect i Di r ect i Di r ect i Di r ect i Di r ect i Di r ect i
