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All your instrumentation and critical low-voltage components should be protected by 1-amp fuses (the automotive variety work fine) as shown in Figure 9-8. Whenever 25 cents can save you up to $200, it s a good investment.

This assignment is invalid because s1 is of type double. Thus, it cannot be assigned a decimal value. The only difference between an implicitly typed variable and a normal explicitly typed variable is how the type is determined. Once that type has been determined, the variable has a type, and this type is fixed throughout the lifetime of the variable. Thus, the type of s1 cannot be changed during execution of the program. Implicitly typed variables were not added to C# to replace normal variable declarations. Instead, implicitly typed variables are designed to handle some special-case situations, the most important of which relate to Language-Integrated Query (LINQ), which is described in 19. Therefore, for most variable declarations, you should continue to use explicitly typed variables because they make your code easier to read and easier to understand. One last point: Only one implicitly typed variable can be declared at any one time. Therefore, the following declaration,

Factors Factors Factors Factors Factors Factors Factors Factors Factors Factors Factors Factors Factors Factors Factors Factors Factors Factors Factors of of of of of of of of of of of of of of of of of of of 2: 3: 4: 2 5: 6: 2 3 7: 8: 2 4 9: 3 10: 2 5 11: 12: 2 3 13: 14: 2 7 15: 3 5 16: 2 4 17: 18: 2 3 19: 20: 2 4

Editable Use this option to lock or unlock all objects on a layer. While a layer is locked, its objects can t be edited (or even selected), which is a little different than the Lock (object) command. You can also set whether layer objects are editable by clicking the Pencil symbol beside the layer in the Object Manager docker to toggle the editing state of objects on the layer. Master Layer This option is only available after you ve dragged a layer on the Object Manager onto the Master Page icon. Changing a layer to a master layer causes it to become part of the Master Page structure. Any objects on a Master Page appear on all pages. For details on working with master pages and master layers, see the next section. Layer Color This selector sets the color swatch as it appears in the docker listing directly to the left of a layer name, for easy recognition. Layer Color also determines object colors when viewed using Normal or Enhanced views while the Override Full Color View option is selected. You can also set the color coding for a layer by double-clicking the color indicator next to a layer name to open a typical color selector menu and then clicking any color from the drop-down color picker. Override Full Color View Use this option to control how the objects on the layer appear when viewed using either Normal or Enhanced view. While selected, it has the effect of displaying all objects in wireframe style, using the layer color specified.

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For vertical non-seismic bridge forces, the primary response is in terms of vertical displacements and to a small extent on the time-dependent varying position of truck live loads. However, for seismic bridge forces, the response is in terms of time-dependent sway and rotations, initiated by soil movements under the footings. 1. In the U.S., seismic design of a bridge is governed by applicable AASHTO LRFD code provisions. AASHTO LRFD seismic zone classi cations (zones 1 to 4) have been rede ned compared to ASD/LFD code classi cation (seismic category A to D). 2. Statically determinate (single span bridges) and those located in zone 1 do not require a formal seismic analysis, except for minimum seat width requirement. Also, suspension cable, cable stayed, arch and movable types of bridges are not covered in detail by AASHTO LRFD Bridge Design Speci cations. 3. A seismic design is usually not required for buried structures or culvert structures. 4. Critical bridges must remain open to all traf c after the design earthquake of a 2500-year return period event. Essential bridges must be open to emergency vehicles and for security/ defense purposes immediately after design earthquake of a 475-year return period event. 5. A percentage of live load may be considered in computing seismic forces, depending on the importance of the bridge. 6. Provide seismic ductility design at the locations where plastic hinges will form, on all new structures. 7. LRFD guidelines recommend use of cracked section properties in considering the rigidity of bridge piers (contrary to the current AASHTO Division 1-A, which used gross properties), and allows for the ability to use soil pressures to resist seismic loads at the abutments.

When cascading high-pass filter sections for added selectivity, we cut in half the cutoff frequency (fc) in the above equation for each filter we plan to cascade. For instance, if we are cascading two sections, and we desire a 1-kHz 3-dB cutoff frequency, then we design each section to have a 3-dB fc of 500 Hz. The final cascaded output will then have an approximately 1-kHz highpass cutoff. 6.6 Tunable Filters

Also ai = where p 2 = m i2,k + 2 m i ,k h i ,k s + h i2,k s 2 and hence,

Performance monitoring A local orderwire Data communications channels for OAM&P messages Framing information Table 27-3: The individual bytes are defined in the designation and their use.