Calculate the required fire flow and duration for a fire-resistive apartment building that has four floors, each with 4200m². The vertical openings are protected, and the entire building is equipped with automatic sprinklers. The neighborhood where this building is located has a large number of houses with wood shake roofs. Consider a side separation of 6m, and ignore the front and rear separation.
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- A water tower will be built to store water produced for needed fire flow. The design of the water tank will be cylindrical with a bottom radius of 50 ft. The service area has 20 one-story warehouses; all warehouses are noncombustible structures, and their average floor area is 0.50 acre. The sum of exposure and communication factors is 0.60 for each warehouse. What will be the needed fire flow (in GPM)? What will be the volume of water (in m3) that needs to be produced and stored in the water tank? What will be the gage pressure (in psi) at the bottom of the water tank?Civil Q- The infiltration rates in a region during various periods of time following the 0.20 to 0.30 0.10 to 0.20 0.25 0.15 Table 5.1 displays the storm's onset. 900 mm of rain fell in all. Using Horton's approach, calculate the total rain, total infiltration loss, and excess rain.A two-story office building totaling 18783 ft2 is interpreted as a light hazard (200 ft2/sprinkler from Table 11.1). If black steel pipe is used, determine the riser size. Fill in the size of the pipe. If 2 1/2 in., input 2.5. Hint: You should first determine how many sprinklers are there using area / [200ft2/sq], and then check this table, and find the size of the pipe. This is a light hazard classification, and the material is steel. You should look at the left-most column.
- A jet of water issues out from a fire hydrant nozzle fitted at a height of 3 m from the ground at an angle of 45 degrees with the horizontal. If the jet under a particular flow condition strikes the ground at a horizontal distance of 20.17 m from the nozzle, find the jet velocity and the maximum height the jet can reach and its maximum horizontal distance from the nozzle. Neglect air resistance.A pipe line consists of successive lengths of 472-mm, 337-mm, and 255-mm pipe. With a continuous flow through the line of 427 Lit/sec of water, compute the mean velocity in 255 size of pipe. (m/s)The difference in energy grade line between inlet and outlet is 20 cm when Ethyl Alcohol (specific gravity = 0.79 and viscosity = 1.19 x 10-3 Pa.s) is flowing under laminar conditions through a 5 m long horizontal pipe of 5 cm diameter. The flow rate (in m3/s) is most nearly? laminar conditions: Re<2,000 Re=(density*V*d)/(viscosity)=(density*(Q/A)*d)/viscosity
- civil query: For the building of given Figure calculate the flow areas that would be used in an algebraic equation analysis of Stairwell 1. The floor- to-floor height (and floor-to-roof) is 10 ft (3.05 m). The building and stairwells all have a height of 160 ft (48.8 m). Use the flow areas listed in Table 10.1 with the high leakage values of single doors and stairwell walls. The stairwells have a roof access hatch, and the flow area of a closed single door is to be used for the hatch.A new municipal waste combustor burns 300 tons/day of waste and produces 100 dscf of emissions per lb of waste burned. The plant just meets the NSPS emission standards and has an effective stack height of 100 m and is located in a rural area. Under C stability and a windspeed of 4 m/s measured at 10 m, determine Cmax and xmax for (a) PM, (b) Pb in micrograms per cubic meter, and m, respectivelyA 4.0 MW fire burns at 1 m above the floor in a large warehouse with a 5.0 m flat ceiling height. What are the ceiling jet temperatures and velocities i. directly above the fire ii. at a radial distance of 2.0 m?
- For what velocity of flow of water in a new, clean 6-inch schedule 40 steel pipe would an energy loss of 20 feet of head occur over a length of 1,000 ft? Compute the volume flow rate at that velocity. Then refigure the velocity using the design value of Ch for steel pipe.What size septic tank will you recommend for a 2-bedroom house? If the AR for the house is determined to be 0.4 gal/ft2 /day, what size drainfield should be designed? Show the layout for the drainfield if the trench width is 5 feet and the maximum length is 100 ft. Space the laterals 6 feet from each other on the center. How does your layout change if the drainfield area is determined from the figure based on a perc rate of 30 minutes/inch?Analyze a rectangular flume 5ft wide carrying 57cusecs discharging on a 5ft apron with no slope in order to determine the depth of flow after thehydraulic jump when the depth of flow before the jump is 1.00 ft and the energy lost in the jump.