## Dle

but kb1 < 1,25 kb2= 0,25 pb / d + 0,375 but kb2 <1,25 kt = 1,5 tj / dM16

but kt <2,5

eb is the distance from the bolt-row to the free edge of the plate in the direction of load transfer;

fu is the ultimate tensile strength of the steel on which the bolt bears; pb is the spacing of the bolt-rows in the direction of load transfer; tj is the thickness of that component.

Concrete in compression (including grout)

Ec*\beffhff k13 =

1,275 E

beff is the effective width of the T-stub flange, see 6.2.5(3) ; /eff is the effective length of the T-stub flange, see 6.2.5(3).

Plate in bending under compression

This coefficient is already taken into consideration in the calculation of the stiffness coefficient k13

Base plate in bending under tension (for a single bolt row in tension)

with prying forces '

without prying forces '

m

/eff is the effective length of the T tp is the thickness of the base pl m is the distance according to F

gure 6.8.

Anchor bolts in tension

with prying forces '

without prying forces '

k16 = 1,6 6 / G

Xi6 = 2,0 a / L

Lb is the anchor bolt elongation length, taken as equal to the sum of 8 times the nominal bolt diameter, the grout layer, the plate thickness, the washer and half of the height of the nut.

' provided that the bolts have been designed not to slip into bearing at the load level concerned

8,8m3 A

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