Steel Design by unknow

Author:unknow
Language: eng
Format: epub
Publisher: Taylor & Francis (CAM)

Step 6 Summary

Our W30 × 116 (W760 × 173) beam works.

5.7.2 Built-up Web Shear Example

Because our web works so easily, let’s now look at a built-up girder. Following the previous example, we jump to Step 4, and determine the member geometry.

Step 4 Initial Size

Keeping the depth the same as the rolled section in the previous example, we will use a flange plate thickness tf of 1.0 in (25.4 mm). Based on this, we find h, illustrated in Figure 5.13.

We will guess a web thickness tw of 0.25 in (6.0 mm). Remember, plate thicknesses need to be standard sizes so they are readily available.

This yields a web area Aw of

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