Partial Safety Factors for Material Properties

 

 

 

Determine the applicable design code and the applicability of special provisions for seismic design for the design of or the strength verification for RC members.

 

 

 

From the Main Menu select Design > RC Design  > Design Code.

 

 

The following dialog box is used to enter the data:

Design Code

RC design code [Default = AASHTO-LRFD02] (refer to Note 1)

Apply Special Provisions for Seismic Design

Option to apply the special provisions for seismic design

 : Enter the selection and close the dialog box.

 : Do not enter the selection and close the dialog box.

Note 1
If the user omits the design code,  American Association of State Highway and Transportation Officials, Section 5 - Concrete Structures, 2016 (AASHTO-LRFD 16) is applied by default.

The available RC design codes are as follows:

 

-  European Standard EN 1992-2:2005

-Three National Annexes are provided:

 Recommended

 British

 Italy

-Strut Angle for Shear Resistance: Value from range 21.8 to 45 degrees are accepted.

- AASHTO-LRFD 16 : AASHTO LRFD Bridge Design Specifications 2016

Seismic Zone is determined by table below.
 

Acceleration Coefficient

Seismic Zone

                       A 0.09

1

0.09 < A 0.19

2

0.19 < A 0.29

3

             0.29 < A

4

- AASHTO-LFD 96 : AASHTO LFD Bridge Design Specifications 1996  

 

Seismic Perfomance Category is determined by table below.
 

Acceleration Coefficient

Importance Classification (IC)

A

I

II

        A 0.09

A

A

0.09 < A 0.19

B

B

0.19 < A 0.29

C

C

          0.29 < A

D

D

- ACI 318-02: Building Code Requirements for Structural Concrete (ACI 318-02) and Commentary (ACI 318R-02)

- CSA-S6-00:

Seismic Performance Zone is determined by table below.

Range of Peak Horizontal Ground Acceleration (PHA), g, for 10% probability of exceedance in 50 years

 

Zonal Acceleration Ratio, A

Seismic Performance Zone

Emergency rout and other bridges

Lifeline

0.00 PHA < 0.04

0

1

2

0.04 PHA < 0.08

0.05

1

2

0.08 PHA < 0.11

0.1

2

3

0.11 PHA < 0.16

0.15

2

3

0.16 PHA < 0.23

0.2

3

3

0.23 PHA < 0.32

0.3

4

4

0.32 or greeter

0.4

4

4

 

- IRC:21-2000: Indian Roads Congress, Standard Specifications and Code of Practice for Road Bridges Section : Cement Concrete(Plain and Reinforced) (Third Revision)

- TWN-BRG-LSD90: Taiwan, Specification of the Highway Bridge Design, Chapter 6: Reinforced Concrete Structure Design, MOTC Standard (90)