Lecture 6 Structural Design PDF

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Lecture 6 Structural Design...

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Lecture 6

Building / Civil Engineering Design Project

Lecture 6 – Structural Design

BLDG / CIVI 390

BLDG / CIVI 390 Building / Civil Engineering Design Project

Lecture 6

Structural Design Structural Design for Gravity Loads

Building / Civil Engineering Design Project

- Design using CMHC Handbook - WoodWorks Design Office • • Structural Design for Lateral Loads - Wind loads, Earthquake loads - Wood Shear Wall

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BLDG / CIVI 390

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Lecture 6

Sizing built-up wood beams

2. Beam supporting main floor only 3. Supported joist length is 12’ (3.6 m) 4. Beam span is 13’ (4 m) 5. Grade of wood: SPF No.2 Use Table 15 of CMHC Handbook, acceptable beams are: • 5-2”x10” (5-38x235 mm) or • 4-2”x12” (4-38x286 mm) 2 / 11

BLDG / CIVI 390

1. One-storey brick veneer house

Building / Civil Engineering Design Project

Select two built-up beam sections that can satisfy the following conditions:

WoodWorks Model – Floor Plan

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Building / Civil Engineering Design Project

Lecture 6

WoodWorks Model – Roof Plan

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Building / Civil Engineering Design Project

Lecture 6

Lecture 6

Lateral loads: Wind, Earthquake • Soft framing ► Tributary area • Rigid framing ► Distributed by stiffness

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BLDG / CIVI 390

Building / Civil Engineering Design Project

• Design lateral resistant system: Shear wall, bracing, diaphragm

Lecture 6

Lateral loads: Wind

• Check if the criteria is satisfied to apply static procedure. • Check the condition to use the figure or equation.

Structural commentaries (User’s guide – NBC 2015)

BLDG / CIVI 390

(red part) For most low rise rectangular shape building :

Building / Civil Engineering Design Project

Main structure / secondary structure

Lecture 6

small building

Lateral loads: Wind

? negative number bcause the wind is leaving

?

http://www.jabacus.com/engineering/c_load2015_index.php

BLDG / CIVI 390

only factor that is different is q50, changes with location

Building / Civil Engineering Design Project

Figure 4.1.7.6.-A (NBC 2015)

Lateral loads: Wind

BLDG / CIVI 390

Building / Civil Engineering Design Project

Lecture 6

Lecture 6

Wind load analysis arrow going up means negative

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BLDG / CIVI 390

Building / Civil Engineering Design Project

Apply the pressure PULS/SLS on each surface

Wind load analysis

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Building / Civil Engineering Design Project

Lecture 6

• Soft framing ► Tributary area

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Lecture 6

BLDG / CIVI 390

Building / Civil Engineering Design Project

Earthquake load: Equivalent Static Analysis...