(1 1 .1 7 )
form ula o ‘zining tuzilishi jih a tid a n , norm al k u c h la n ish la r
b o ‘yicha m ustahkam likka tekshirish formulasidan farq qilm aydi. Shunga
k o ‘ra, doiraviy val bir vaqtning o ‘zida ham egilib, ham buralsa, uning mus-
tahkam ligini tekshirishni M his ta ’sirida vujudga keladigan oddiy egilishga
tekshirish bilan almashtirsa bo‘ladi.
1 1 . 4 - m i s o l . 1 1 . 1 0 - r a s m d a t a s v i r l a n g a n v a l g a i k k it a t i s h l i g ' i l d i r a k l a r
o ' r n a t i l g a n b o ‘lib , b u l a r g a F , = 5 k H v a F , = 1 0 k H k u c h t a ’s i r e t a d i .
A g a r r i c c s a t e t i l g a n k u c h l a n is h [ a ] = 1 0 k H /s m 2 (lO O M P a ) b o ‘Isa , v a l -
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