Architectural Drafting and Design (MindTap Course List)
7th Edition
ISBN: 9781285165738
Author: Alan Jefferis, David A. Madsen, David P. Madsen
Publisher: Cengage Learning
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Chapter 22, Problem 22.1Q
To determine
Thethree types of roof plans.
Expert Solution & Answer
Explanation of Solution
The types of roof plans are given below.
- Mansard roof
- Pyramid roof
- Salt box roof
- Flat roof
- Gambrel roof
- Arch roof
- Hip roofs
- Silicon roofs
Gambrel roof are the roof which have shapes like that were at the time of Dutch settlers in colonial period. These types of roof reduce the cost by minimizing the use of expensive roofing material.
Hip roofs are used for eliminating the roof mass and thus creating the small appearance of the structure.
Mansard roofs are similar to the gambrel with the only difference of having angled roof on all four sides rather than two sides in gambrel roof.
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Problem 2: Use the table below to compute the
coordinates of the centroid of area shown below.
y
– 3 in.—|— 4 in. -
-3
3 in.
3 in.
x
Area
X
X * Area
y
Y * Area
Component
(in²)
(in)
(in³)
(in)
(in³)
Square 1
Rectangle 2
Triangle 3
Rectangle 4
Σ
A shallow foundation measuring 1 m × 2 m in plan is to be constructed over a normally consolidated sand layer. Given: D₁ = 1 m, №60 increases with depth, N 60 (in the depth of stress influence) = 11,
Estimate the elastic settlement using Burland and Burbidge's method.
(Enter your answer to three significant figures.)
Se
mm
and
Inet
=
138 kN/m².
A continuous foundation on a deposit of sand layer is shown in the figure below along with the variation of the cone penetration resistance qc
1.5 m
0
2.5 m
Sand
14
q= 195 kN/m²
qe (kN/m²)
9 1750
93450
9c=2900
Depth (m)
Assuming = 16 kN/m² and creep is at the end of ten years after construction, calculate the elastic settlement of the foundation using the strain influence factor method. Use the equations
22 Iz
Es
0
| Se = C₁C2 (9) Az
and
Es = 3.5qc (for L/B> 10)
(Enter your answer to three significant figures.)
Se =
mm
Chapter 22 Solutions
Architectural Drafting and Design (MindTap Course List)
Ch. 22 - Prob. 22.1QCh. 22 - DIRECTIONS: Answer the following questions with...Ch. 22 - Prob. 22.3QCh. 22 - DIRECTIONS: Answer the following questions with...Ch. 22 - Prob. 22.5QCh. 22 - Prob. 22.6QCh. 22 - Prob. 22.7QCh. 22 - DIRECTIONS: Answer the following questions with...Ch. 22 - Prob. 22.9QCh. 22 - Prob. 22.10Q
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