Info

99.25 k

Figure7.49c. (Continued)

Figure7.49c. (Continued)

Next, the collected load of 80 kips multiplied by the over strength factor Qo must be transferred from the reinforced slab into the frame on line G. This is done by welding headed studs. Using the special load combination, the ultimate load to be transferred is:

Assuming 3/4''-diameter-headed studs, with a capacity governed by a concrete strength of 3000 psi,

= 0.65 x 800 x 0.44 x 0.75^3000 = 1000 = 9.4 kips/stud

The required number of studs = 280/9.4 = 29.78. Use 30-3/4''-diameter studs at an approximate spacing of 7-in. over the entire 20-ft length of frame on line G.

Chord Design. The maximum moment occurs at a distance of 63.5 ft from grid A and is equal to

Mmax = 1765.5 kip-ft

The corresponding axial force, compression, or tension in the edge beams B1 or B2 due to chord action is

TABLE 7.9 Diaphragm Shear Q and Flexibility Factor F for 3"-Deep Composite Metal Deck

27," Cone, fill: W = 110 pcf 374" Cone, fill: W = 110 pcf 4 Puddle -

welds Span

TABLE 7.9 Diaphragm Shear Q and Flexibility Factor F for 3"-Deep Composite Metal Deck welds Span

Gauge

Factor

8'-0"

9'-0"

lO'-O"

ll'-O"

12'-0"

13'-0"

14'-0"

15'-0"

16'-0"

8'-0"

9'-0"

lO'-O"

ll'-O"

12'-0"

13'-0"

14'-0"

15'-0"

16'-0"

Renewable Energy 101

Renewable Energy 101

Renewable energy is energy that is generated from sunlight, rain, tides, geothermal heat and wind. These sources are naturally and constantly replenished, which is why they are deemed as renewable. The usage of renewable energy sources is very important when considering the sustainability of the existing energy usage of the world. While there is currently an abundance of non-renewable energy sources, such as nuclear fuels, these energy sources are depleting. In addition to being a non-renewable supply, the non-renewable energy sources release emissions into the air, which has an adverse effect on the environment.

Get My Free Ebook


Post a comment