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geotechnical engineering practices in canada - the Office of ...

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16<br />

CHAPTER 3<br />

Figure 4. Stag<strong>in</strong>g area for float<strong>in</strong>g tunnel elements<br />

and tow<strong>in</strong>g out to position.<br />

will l<strong>in</strong>k Denmark to<br />

Sweden and is an<br />

example <strong>of</strong> Eurocode 7<br />

procedures and designbuild<br />

contract<strong>in</strong>g <strong>in</strong><br />

practice.<br />

LRFD<br />

History <strong>of</strong> Use<br />

and Development<br />

The Eurocode system<br />

was developed to<br />

harmonize <strong>the</strong> design <strong>of</strong><br />

civil <strong>eng<strong>in</strong>eer<strong>in</strong>g</strong> works<br />

(i.e., build<strong>in</strong>gs, bridges,<br />

sign supports, and<br />

towers) among <strong>the</strong> EU<br />

countries. Thus, it<br />

applies to and, upon<br />

completion, will be<br />

mandatory for all EU countries—now number<strong>in</strong>g 15—and 4 non-EU countries. More are<br />

expected to jo<strong>in</strong> from <strong>the</strong> Eastern bloc.<br />

The general features <strong>of</strong> <strong>the</strong> Eurocodes are:<br />

• “Technical rules” are harmonized across materials.<br />

• They are design codes.<br />

• They have a limit-states format.<br />

• They use partial safety factors.<br />

As written, Eurocode features:<br />

• Pr<strong>in</strong>cipal requirements that must be followed are paragraphs marked with a “P.”<br />

• Application rules <strong>in</strong>dicate optional ways to satisfy <strong>the</strong> pr<strong>in</strong>cipal requirements.<br />

• Partial factors, placed <strong>in</strong> brackets [ ], may be set by EU-member governments,<br />

because build<strong>in</strong>g safety is a government responsibility.<br />

The Eurocodes for Civil Eng<strong>in</strong>eer<strong>in</strong>g Works are numbered as follows:<br />

• Eurocode 0: Basis for Design.<br />

• Eurocode 1: Actions.<br />

• Eurocodes 2–6 and 9: Structural Design (concrete, steel, etc.).<br />

• Eurocode 7: Geotechnical Design.<br />

• Eurocode 8: Earthquake Design.

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