Square column size - 16" PDL 280 kips, PLL 180 kips L = 1.5B, fy = 60 ksi, f'c = 4000 psi fa 4 ksf, Footing base = 4'-6" De find 26", soil weight = 100 pcf, Reinforcement - #8 bars 1) Design for load transfer 2) Development length for the dowels 3) Design bars for footing at both directions 4) Bars fit the footing based on development length 5) Two way footing spacing diagram.

Square column size - 16" PDL 280 kips, PLL 180 kips L = 1.5B, fy = 60 ksi, f'c = 4000 psi fa 4 ksf, Footing base = 4'-6" De find 26", soil weight = 100 pcf, Reinforcement - #8 bars 1) Design for load transfer 2) Development length for the dowels 3) Design bars for footing at both directions 4) Bars fit the footing based on development length 5) Two way footing spacing diagram.

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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Concept explainers

Load and resistance factor design

Load and resistance factors design (LRFD), also known as Limit state design (LSD), refers to the design method used in building engineering. A boundary condition is a condition of a structure where it can no longer meet the relevant design requirements. The condition may refer to the load level or other actions on the structure, while the terms refer to the integrity of the structure, suitability for use, durability, or other design requirements. A structure designed for LRFD is limited to keeping track of all possible actions during its design time and is always ready for use, with the appropriate level of reliability in each boundary condition. LRFD-based construction codes clearly define the appropriate levels of reliability in their instructions.

Question

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Square column size 16"
280 kips, PLL = 180 kips
L = 1.5B, fy = 60 ksi, f'c = 4000 psi
fa 4 ksf, Footing base = 4'-6"
Df
PDL
find
26", soil weight = 100 pcf, Reinforcement - #8 bars
1) Design for load transfer
2) Development length for the dowels
3) Design bars for footing at both directions
4) Bars fit the footing based on development length
5) Two way footing spacing diagram.
4'-6"
26
B
VỈ
L
Ildi
[ld₂
Dowel Configuration
B
1.5

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Step 1: Given data

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Step 2: 1. Area of footing

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Step 3: 2. Check for One way and Two way shear:

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Step 4: 3. Design of Reinforcement steel:

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Step 5: 4. Band width check

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