Engineering Fundamentals: An Introduction to Engineering
Engineering Fundamentals: An Introduction to Engineering
6th Edition
ISBN: 9780357112311
Author: Saeed Moaveni
Publisher: Cengage Learning US
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Chapter 8, Problem 1P
To determine

Create a calendar, which is showing the beginning and the end of daylight saving time for years 2025 -2031.

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Explanation of Solution

Daylight saving time is the idea of save energy by advancing clocks by one hour in summer months; therefore the sunlight lasts longer in the evening.

This Daylight saving time for U.S in every year starts in the second Sunday of March at 2:00 A.M. and it ends in the first Sunday of November at 2.00 A.M.

This saving time for the years from 2025 to 2031 is created and it is tabulated as in Table 1.

YearDaylight Savings Time Begins at 2:00 a.mDaylight Savings Time Ends at 2:00 a.m
2025March 9November 2
2026March 8November 1
2027March 14November 7
2028March 12November 5
2029March 11November 4
2030March 10November 3
2031March 9November 2

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An L6 × 4 × 5/8 tension member of A36 steel is connected to a gusset plate with 1-inch-diameter bolts, as shown in the figure below. It is subjected to the following service loads: dead load = 40 kips, live load = 100 kips, and wind load = 45 kips. Use the equation for U: U = 1 − For A36 steel: Fy = 36 ksi, F = 58 ksi. x l For L6 × 4×5/8: Ag = 5.86 in.², x = 1.03 in. 21/4" L6 × 4 × 5/8 11/2" 21/2" 11/2" a. Determine whether this member is adequate using LRFD. -Select- What is the design strength for LFRD? (Express your answer to three significant figures.) Φι Ρη - = kips Which AISC load combination controls? -Select- What is the controlling AISC load combination? (Express your answer to three significant figures.) Pu = kips b. Determine whether this member is adequate using ASD. -Select- What is the allowable strength for ASD? (Express your answer to three significant figures.) Pn Sit kips Which ASD load combination controls? -Select- What is the controlling ASD load combination?…
A double-angle shape, 2L7 × 4 × 5/8, is used as a tension member. The two angles are connected to a gusset plate with 7/8-inch-diameter bolts through the 7-inch legs, as shown in the figure below. A572 Grade 50 steel is used: Fy Fu = 65 ksi. Suppose that t = 5/8 in. = 50 ksi, For L7 x 4 x 5/8: Ag = 6.5 in.², x = 0.958 in. 21/2" оо 11/2" 2L7 x 4 x t a. Compute the design strength. (Express your answer to three significant figures.) ФЕРП = kips b. Compute the allowable strength. (Express your answer to three significant figures.) 'n Sit = kips
I really need help on b
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