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MindTap Engineering for Das/Sobhan's Principles of Geotechnical Engineering, 9th Edition, [Instant Access], 2 terms (12 months)
9th Edition
ISBN: 9781305971257
Author: Braja M. Das; Khaled Sobhan
Publisher: Cengage Learning US
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Chapter 2, Problem 2.15P
Repeat Problem 2.14 with the following values: Gs = 2.75, temperature of water = 21°C, t = 88 min, and L = 11.7 cm.
2.14 A hydrometer test has the following result: Gs = 2.65, temperature of water = 26° C, and L = 10.4 cm at 45 minutes after the start of sedimentation (see Figure 2.25). What is the diameter D of the smallest-size particles that have settled beyond the zone of measurement at that time (that is, t = 45 min)?
Figure 2.25 ASTM 152H type of hydrometer placed inside the sedimentation cylinder (Courtesy of Khaled Sobhan, Florida Atlantic University, Boca Raton, Florida)
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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 =…
Water in a tank is used to control the water pressure in a pipe as shown in Figure P5 below.
Find the pressure in the pipe at A if h = 200 mm and the mercury is at the elevation shown
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Chapter 2 Solutions
MindTap Engineering for Das/Sobhan's Principles of Geotechnical Engineering, 9th Edition, [Instant Access], 2 terms (12 months)
Ch. 2 - For a gravel with D60 = 0.48 mm, D30 = 0.25 mm,...Ch. 2 - Prob. 2.2PCh. 2 - Prob. 2.3PCh. 2 - The following are the results of a sieve analysis....Ch. 2 - Repeat Problem 2.4 with the following data. 2.4...Ch. 2 - Repeat Problem 2.4 with the following data. 2.4...Ch. 2 - Repeat Problem 2.4 with the following data. 2.4...Ch. 2 - The following are the results of a sieve and...Ch. 2 - Repeat Problem 2.8 using the following data. 2.8...Ch. 2 - Repeat Problem 2.8 using the following data. 2.8...
Ch. 2 - The grain-size characteristics of a soil are given...Ch. 2 - Repeat Problem 2.11 with the following data. 2.11...Ch. 2 - Repeat Problem 2.11 with the following data. 2.11...Ch. 2 - A hydrometer test has the following result: Gs =...Ch. 2 - Repeat Problem 2.14 with the following values: Gs...Ch. 2 - Three groups of students from the Geotechnical...Ch. 2 - Refer to Problem 2.C.1. Results of the sieve...
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- Select a W-shape for the following conditions: Beam spacing = 12 ft Span length = 25 ft Slab and deck combination weight = 43 psf Partition load = 20 psf Ceiling weight = 5 psf Flooring weight = 2 psf Live load 160 psf Fy = 50 ksi The maximum live load deflection cannot exceed L/340. Shape Mp (ft-kips) M₁/ (ft-kips) Vn (kips) Vn/v (kips) Ix (in. Vn/n, (kips) I. (in.) W14 × 61 383 254 156 104 640 W21 × 44 358 238 217 145 843 W16 × 50 345 230 186 124 659 W18 × 46 340 226 195 130 712 a. Use LRFD. Calculate the required moment of inertia, the required moment strength, and the maximum shear. (Express your answers to three significant figures.) Ix = in. 4 Μι = Vu Select a shape: -Select- b. Use ASD. ft-kips kips Calculate the required moment of inertia, the required moment strength, and the maximum shear. (Express your answers to three significant figures.) Ix Ma = Va = Select a shape: -Select- 4 in. ft-kips kipsarrow_forwardThe beam shown in the figure below has continuous lateral support of both flanges. The uniform load is a service load consisting of 70% dead load and 30% live load. The dead load includes the weight of the beam. 6 k/ft +9 18' If A992 steel is used, is a W12 × 35 adequate? For A992 steel: Fy = 50 ksi. bf h For W12 x 35: = 6.31, = 36.2 in., Zx 2tf tw (Express your answers to three significant figures.) a. Use LRFD. Mu Фомп = ft-kips ft-kips A W12 × 35 is -Select- b. Use ASD. Ma = ft-kips Mn ft-kips 26 A W12 × 35 is -Select- = +6→ 51.2 in. 3arrow_forwardVerify the value of Zx for a W10 × 30 that is tabulated in the dimensions and properties tables in Part 1 of the Manual. For W10 × 30: Ag Use the table below. - 8.84 in.2, d 10.5 in. AISC Manual Label y (in.) WT 9 × 25 2.12 WT 8 × 25 1.89 WT 7 × 24 1.35 WT 6 × 25 1.17 WT 5 × 15 1.10 (Express your answer to three significant figures.) Zx = 3 in.arrow_forward
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