A 12-inch concrete wall is supported on a continuous footing as shown. Use normal weight concrete with f'c = 3000 psi. Determine if the development length of the tension steel is adequate. The steel is No. 6 at 8 inches on center. Assume fy is reached first at the face of the wall and development length is measured from that location. Bars are grade 60 and epoxy coated. 1'-6" -2'-3". 12". -2'-3". 3" clear fy 3" clear

Portland cement concrete consists of what four primary elements?

Note For Problems 9.6-1 through 9.6-5, use the lower-bound moment of inertia for deflection of the composite section. Compute this as illustrated in Example 9.7. 9.6-5 For the beam of Problem 9.4-2. a. Compute the deflections that occur before and after the concrete has cured. b. It the live toad deflection exceeds L360 , select another steel shape using either LRFD or ASD.

Why is nothing added to the concrete quantities for wastage at the time of the takeoff?

How does the addition of air-entraining materials to Portland cement improve the concrete?

Use the composite beam tables and select a W-shape and stud anchors for the following conditions: Span length = 18 6 Beam spacing = 9 ft Total slab thickness = 51 2 in. (the slab and deck combination weighs 57 psf). Lightweight concrete with a unit weight of 115 pcf is used Construction load = 20 psf Partition load = 20 psf Live load = 225 psf Fy=50 ksi and fc=4 ksi A cross section of the formed steel deck is shown in Figure P9.8-9. The maximum live-load deflection cannot exceed L/360 (use a lower-bound moment of inertia). a. Use LRFD. b. User ASD.

If the soil-bearing pressure is 1500 psf and the concrete has a strength of 2500 psi, what size pier is needed to support a load of 4600 lb?

What size does an opening in concrete have to be before a deduction is made from the volume of concrete to account for the opening?

Note For Problems 9.6-1 through 9.6-5, use the lower-bound moment of inertia for deflection of the composite section. Compute this as illustrated in Example 9.7. 9.6-2 Compute the following deflections for the beam in Problem 9.2-2. a. Maximum deflection before the concrete has cured. b. Maximum total deflection after composite behavior has been attained.