EBK FUNDAMENTALS OF CONSTRUCTION ESTIMA
4th Edition
ISBN: 8220106748305
Author: Pratt
Publisher: CENGAGE L
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Chapter 6, Problem 11RQ
To determine
The insulation in which the masonry work is being measured.
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EBK FUNDAMENTALS OF CONSTRUCTION ESTIMA
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- : For the gravity concrete dam shown in the figure, the following data are available: The factor of safety against sliding (F.S sliding)=1.2 Unit weight of concrete (Yconc)=24 KN/m³ - Neglect( Wave pressure, silt pressure, ice force and earth quake force) μ=0.65, (Ywater) = 9.81 KN/m³ Find factor of safety against overturning (F.S overturning) 6m3 80m Smarrow_forwardAum AA waste incinerator stack emits 27,027 kg/yr of cadmium and has an effective stack might of 100 m. The wind speed is 5 m/s at an anemometer located at 10 m. It is a clear sunny day with the sun nearly overhead (Class B conditions). a. Calculate the ground-level cadmium concentration (in ug/m³) at a distance of 2 km directly downwind? [Refer to tables in the textbook to help with this problem] What is the concentration of cadmium (in µg/m³) inside of a house at the location in part (a) after two hours? Note that the initial concentration of cadmium in the house was zero, there are 0.25 air changes per hour (ach), there is no source of cadmium inside the house, and cadmium is considered a conservative pollutant.arrow_forwardMust be handwrittenShow your complete solution with proper working equations.Express intermediate answers to at least four (4) decimal places and round final answers to two (2) decimal places. Enclose and summarize your final answers in a boxarrow_forward
- For the frame shown below, determine the vertical displacement at C. Assume that flexural rigidities AB and BC segments are EI and 2EI, respectively. Use the method of virtual work and show all working.arrow_forwardYou are an engineer designing an aeration tank for a wastewater treatment plant receiving municipal waste. The activated sludge system (aeration tank and secondary clarifier) you design needs to remove 85% of the incoming BODs from the primary effluent, giving a final concentration of 30.0 mg BOD5/L exiting the system. Your design will maintain a concentration of 2500 mg VSS/L and F/M ratio of 0.5 g BOD/g VSS d in the aeration tank. In an effort to keep the waste activated sludge low in water, only about 0.1% of the primary effluent flow (Q) exits the WAS line. The secondary effluent has a flow rate of 9990 m³/d. What volume (in m³) will the aeration tank need to be? Write out all equations and state any assumptions as needed. Primary effluent: Aeration tank V, X, S Secondary clarifier Secondary effluent: Q. Xo. So Qe, Xe, S 0 po RAS line: Q, X., S Activated sludge control volume WAS line: Qw, X, Sarrow_forwardAum A waste incinerator stack emits 27,027 kg/yr of cadmium and has an effective stack might of 100 m. The wind speed is 5 m/s at an anemometer located at 10 m. It is a clear sunny day with the sun nearly overhead (Class B conditions). a. Calculate the ground-level cadmium concentration (in ug/m³) at a distance of 2 km directly downwind? [Refer to tables in the textbook to help with this problem] What is the concentration of cadmium (in µg/m³) inside of a house at the location in part (a) after two hours? Note that the initial concentration of cadmium in the house was zero, there are 0.25 air changes per hour (ach), there is no source of cadmium inside the house, and cadmium is considered a conservative pollutant.arrow_forward
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- L h Water Fig. P4 Hinge Farrow_forwardSomeone wants to study environmental engineering in a European country for 8 years and wants to deposit an amount of money in one of the approved banks for the purpose of paying his annual study expenses, where it is planned that he will withdraw $2000 annually after one year from the date of deposit for a period of five consecutive years, and then withdraw $3000 annually for the remaining period of his studies. Calculate the amount required to be deposited for the purpose of covering the study expenses if you know that the interest rate is 8.5%arrow_forwardDesign a typical girder for the floor system shown in the figure below. In addition to the weight of the beam, the dead load consists of a 5-inch-thick reinforced concrete slab (normal-weight concrete). The live load is 85 psf, and there is a 20-psf partition load. Do not check deflections. Assume that the girder is supporting beams on each side, and assume that the beams weigh 35 lb / ft. Let all the loads on the girder act as a uniform load (be sure to include the weight of the beams). 30' A -4 @ 5' = 20' Use the table below. - Mn (ft-kips) Mn/ (ft-kips) | Vn (kips) Vn/v (kips) Shape W21 × 48 398 265 216 144 W12 × 58 324 216 132 87.8 W16 × 45 309 205 167 111 W18 × 40 294 196 169 113 a. Use LRFD. Calculate the required moment strength and the maximum shear. (Express your answers to three significant figures.) Mu - Vu Select a shape: -Select- b. Use ASD. ft-kips kips Calculate the required moment strength and the maximum shear. (Express your answers to three significant figures.) Ma =…arrow_forward
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