Important concept: The slabs used in buildings and bridges are usually designed as one-way slabs. One- way slabs are assumed to be supported on two opposite sides, and bend only in one direction. In general, we will assume that slabs are designed as a one-way slab to determine the tributary area and the load supported by the beams on two opposite sides. Problem 3.1 The floor of an apartment building, shown in the figure, is subjected to a uniformly distributed load of 45 psf over its surface area. The aspect ratio (beam length to spacing ratio) of the slabs in the framing plan is 40 ft/25 ft = 1.6. The load path is: concrete slabs - floor beams - girders columns - foundations. 1. Determine the loads acting on the floor beams AF, BG, and CH of the framing system. Sketch the tributary area of the beams selected on the building framing plan. Draw the free body diagram of the beams selected. 2. Determine the loads acting on the girders AC and FH of the framing system. Sketch the tributary area of the girders selected on the building framing plan. Draw the free body diagram of the girders selected. 3. Calculate the axial loads acting on the columns A, F, and H. Sketch the tributary area of the columns selected on the building framing plan. Draw the free body diagram of the columns selected. Check that the load on the columns equal the reactions from the girders loading the columns. Floor beam A FH B L H M 4 at 25 ft 100 ft D Girder I N E To Column 2 at 40 ft = 80 ft 1 of 3
Important concept: The slabs used in buildings and bridges are usually designed as one-way slabs. One- way slabs are assumed to be supported on two opposite sides, and bend only in one direction. In general, we will assume that slabs are designed as a one-way slab to determine the tributary area and the load supported by the beams on two opposite sides. Problem 3.1 The floor of an apartment building, shown in the figure, is subjected to a uniformly distributed load of 45 psf over its surface area. The aspect ratio (beam length to spacing ratio) of the slabs in the framing plan is 40 ft/25 ft = 1.6. The load path is: concrete slabs - floor beams - girders columns - foundations. 1. Determine the loads acting on the floor beams AF, BG, and CH of the framing system. Sketch the tributary area of the beams selected on the building framing plan. Draw the free body diagram of the beams selected. 2. Determine the loads acting on the girders AC and FH of the framing system. Sketch the tributary area of the girders selected on the building framing plan. Draw the free body diagram of the girders selected. 3. Calculate the axial loads acting on the columns A, F, and H. Sketch the tributary area of the columns selected on the building framing plan. Draw the free body diagram of the columns selected. Check that the load on the columns equal the reactions from the girders loading the columns. Floor beam A FH B L H M 4 at 25 ft 100 ft D Girder I N E To Column 2 at 40 ft = 80 ft 1 of 3
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
Related questions
Question
100%
Transcribed Image Text:Important concept:
The slabs used in buildings and bridges are usually designed as one-way slabs. One-
way slabs are assumed to be supported on two opposite sides, and bend only in one
direction. In general, we will assume that slabs are designed as a one-way slab to
determine the tributary area and the load supported by the beams on two opposite
sides.
Problem 3.1
The floor of an apartment building, shown in the figure, is subjected to a uniformly
distributed load of 45 psf over its surface area. The aspect ratio (beam length to spacing
ratio) of the slabs in the framing plan is 40 ft/25 ft = 1.6. The load path is: concrete slabs
- floor beams - girders columns - foundations.
1.
Determine the loads acting on the floor beams AF, BG, and CH of the framing
system. Sketch the tributary area of the beams selected on the building framing
plan. Draw the free body diagram of the beams selected.
2. Determine the loads acting on the girders AC and FH of the framing system. Sketch
the tributary area of the girders selected on the building framing plan. Draw the free
body diagram of the girders selected.
3. Calculate the axial loads acting on the columns A, F, and H. Sketch the tributary
area of the columns selected on the building framing plan. Draw the free body
diagram of the columns selected. Check that the load on the columns equal the
reactions from the girders loading the columns.
Floor beam
A
FH
B
L
H
M
4 at 25 ft 100 ft
D
Girder
I
N
E
·To
Column
2 at 40 ft =
80 ft
1 of 3
Expert Solution
This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
Step by step
Solved in 3 steps with 3 images
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, civil-engineering and related others by exploring similar questions and additional content below.Recommended textbooks for you
Structural Analysis (10th Edition)
Civil Engineering
ISBN:
9780134610672
Author:
Russell C. Hibbeler
Publisher:
PEARSON
Principles of Foundation Engineering (MindTap Cou…
Civil Engineering
ISBN:
9781337705028
Author:
Braja M. Das, Nagaratnam Sivakugan
Publisher:
Cengage Learning
Structural Analysis (10th Edition)
Civil Engineering
ISBN:
9780134610672
Author:
Russell C. Hibbeler
Publisher:
PEARSON
Principles of Foundation Engineering (MindTap Cou…
Civil Engineering
ISBN:
9781337705028
Author:
Braja M. Das, Nagaratnam Sivakugan
Publisher:
Cengage Learning
Fundamentals of Structural Analysis
Civil Engineering
ISBN:
9780073398006
Author:
Kenneth M. Leet Emeritus, Chia-Ming Uang, Joel Lanning
Publisher:
McGraw-Hill Education
Traffic and Highway Engineering
Civil Engineering
ISBN:
9781305156241
Author:
Garber, Nicholas J.
Publisher:
Cengage Learning