Analysis

Design moments Spans

MEd = (1.25 x 30.2 x 0.090 + 1.5 x 11.5 x 0.100) x 6.02

VAB = 0.45 x 6.0 x 50.8 = 137.2 kN VAB = 0.63 x 6.0 x 50.8 = 192.0 kN

<Concise EC2 Table 15.3>

<Concise EC2 Table 15.3>

Table 4.1

Coefficients for use with beams (See Concise EC2 Table 15.3)

Table 4.1

Coefficients for use with beams (See Concise EC2 Table 15.3)

Coefficient

Location

Outer support

Near middle of end span

At 1st interior support

At middle of interior spans

At interior supports

Moment gk and qk

25% spana

0.094

0.075

Moment gk

0.090

0.066

Moment qk

0.100

0.086

Shear

0.45

0.63:0.55

0.50:0.50b

Conditions

For beams and slabs, 3 or more spans. (They may also be used for 2 span beams but support moment coefficient =

0.106 and internal shear coefficient = 0.63 both sides.)

Key a At outer support '25% span' relates to the UK Nationally Determined Parameter for BS EN 1992-1-1 9.2.1.2(1) for minimum percentage of span bending moment to be assumed at supports in beams in monolithic construction. 15% may be appropriate for slabs (see BS EN 1992-1-1 Cl 9.3.1.2). b For beams of five spans, 0.55 applies to centre span.

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