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1.4 Symbols

(1) The following symbols are used in this Standard:

d is the nominal bolt diameter, the diameter of the pin or the diameter of the fastener;

d0 is the hole diameter for a bolt, a rivet or a pin ;

do,t is the hole size for the tension face, generally the hole diameter, but for horizontally slotted holes the slot length should be used;

do,v is the hole size for the shear face, generally the hole diameter, but for vertically slotted holes the slot length should be used;

dc is the clear depth of the column web;

dm is the mean of the across points and across flats dimensions of the bolt head or the nut, whichever is smaller;

fH,Rd is the design value of the Hertz pressure;

fur is the specified ultimate tensile strength of the rivet;

ei is the end distance from the centre of a fastener hole to the adjacent end of any part, measured in the direction of load transfer, see Figure 3.1;

e2 is the edge distance from the centre of a fastener hole to the adjacent edge of any part, measured at right angles to the direction of load transfer, see Figure 3.1;

e3 is the distance from the axis of a slotted hole to the adjacent end or edge of any part, see Figure 3.1;

e4 is the distance from the centre of the end radius of a slotted hole to the adjacent end or edge of any part, see Figure 3.1;

£ef is the effective length of fillet weld;

n is the number of the friction surfaces or the number of fastener holes on the shear face;

p1 is the spacing between centres of fasteners in a line in the direction of load transfer, see Figure 3.1;

p10 is the spacing between centres of fasteners in an outer line in the direction of load transfer, see Figure 3.1;

p1i is the spacing between centres of fasteners in an inner line in the direction of load transfer, see Figure 3.1;

p2 is the spacing measured perpendicular to the load transfer direction between adjacent lines of fasteners, see Figure 3.1;

r is the bolt row number;

NOTE: In a bolted connection with more than one bolt-row in tension, the bolt-rows are numbered starting from the bolt-row furthest from the centre of compression.

Ss

is

the length of stiff bearing.

'a

is

the thickness of the angle cleat.

fc

is

the thickness of the column flange;

'p

is

the thickness of the plate under the bolt or the nut;

'w

is

the thickness of the web or bracket;

'wc

is

the thickness of the column web;

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