Нефтяная промышленность.

Shovel bottom
highly crowned tank bottom

The lateral shear transfer behavior for special tank configurations (e.g., shovel bottoms, highly crowned tank bottoms, tanks on grillage) can be unique and are beyond the scope of this appendix.

Искренне благодарю.

вот здесь например:

http://www.eng-tips.com/viewthread.cfm?qid=240282

специалист называет cone up bottoms как ...I always called them "shovel bottoms"...

ИМХО: тут и со скошенным днищем и с коническим днищем подходит.....Так че это?? Пытался фотку найти ..не нашел.

The transfer of the total lateral shear force between the tank and the subgrade shall be considered.For self-anchored flat-bottom steel tanks, the overall horizontal seismic shear force shall be resisted by friction between the tank bottom and the foundation or subgrade. Self-anchored storage tanks shall be proportioned such that the calculated seismic baseshear,
.......................
, shall not exceed 0.4. Lower values of the friction coefficient should be used if the interface of the bottom to supporting foundation does not justify the friction value above (e.g., leak detection membrane beneath the bottom with a lower friction factor, smooth bottoms, etc.).(E.7.6-1) No additional lateral anchorage is required for mechanically-anchored steel tanks designed in accordance with this appendix event hough small movements of approximately 25 mm (1 in.) are possible.The lateral shear transfer behavior for special tank configurations (e.g., shovel bottoms, highly crowned tank bottoms, tanks on grillage) can be unique and are beyond the scope of this appendix.

crowned bottom - это когда посередке в днище имеется этакая выпуклость, как вот у этого поддона для мяса ...