ECBASEPLATE - Column Base Plate Pinned Design

This part of user manual describes how to use ECBASEPLATE for the design of Column base plate pinned. ECPlus applications are designed as wizard type which is a step by step guided input procedure. If you are new to ECPlus applications, click here for general guidance.

Prerequisites: The user is expected to have a basic understanding of foundation design concepts.
The minimum input data required to use this application is as follows:

• ❶ Structural Steel Section and Grade
• ❷ Bolt Anchorage Details
• ❸ Plate Loads and Moment

Following sections are presented with various input pages of ECBASEPLATE application with descriptions:

---

Column

This page allows to enter column details.

Type

Select the option between Standard, I Sec - User, RHS Sec - User or SHS Sec - User.
▽ Standard: Select this option to design base plate per British, Euro or American Standard.
▽ I Sec - User: Select this option for Base plate to assign as user defined I Section.
▽ RHS Sec - User: Select this option for Base plate to assign as user defined RHS Section.
▽ SHS Sec - User: Select this option for Base plate to assign as user defined SHS Section.

Steel Section Table

By choosing the Type as  Standard  , the Cross-sectional properties will be displayed for the selected Section. To change the selected Section, click button, a pop-up dialog box displays a list of standard section based on option listed in menu  Section Table  &  Cross Section 

▽ Section Table:

Select this option to have list of Standard British, European or AISC Sections.

▽ Cross Section:

This option allows user to select wider or narrow flange beam like UB, UC, IPE, HE, W, M, etc., based on selection at  Section Table  menu.

▽ Filter:

Based on name by user and with option selected at  Section Table  and  Cross Section , a filtered member list will be displayed.

I Sec User

By choosing the Type as  I Sec User , enter the Cross-sectional properties.

Depth - D

Enter overall depth of the section.
↔ Range: 50 to 1500 mm

Width - B

Enter the flange width of the section.
↔ Range: 50 to 1500 mm

Flange Thickness - T

Enter the thickness of flange of the section.
↔ Range: 3 to 100 mm

Web Thickness - t

Enter the thickness of web of the section.
↔ Range: 2 to 100 mm

RHS Sec User

By choosing the Type as  RHS Sec User , enter the Cross-sectional properties.

Depth - D

Enter overall depth of the section.
↔ Range: 50 to 1500 mm

Width - B

Enter the flange width of the section.
↔ Range: 50 to 1500 mm

Member Thickness - t

Enter the member thickness of the section.
↔ Range: 2 to 100 mm

SHS Sec User

By choosing the Type as  RHS Sec User , enter the Cross-sectional properties.

Depth - D

Enter overall depth of the section.
↔ Range: 50 to 1500 mm

Member Thickness - t

Enter the member thickness of the section.
↔ Range: 2 to 100 mm

Weld

Member - Base Plate Weld Size - s

Enter the weld size between member and base plate.
↔ Range: >= 0 mm

---

Base Plate & Bolts

This page allows to enter base plate and bolts details.

Base Plate

Depth - D_pl

Enter the depth of the base plate.
↔ Range: 200 to 2000 mm

Width - B_pl

Enter the width of the base plate.
↔ Range: 200 to 2000 mm

Thickness - t_pl

Enter the thickness of the base plate.
↔ Range: 3 to 150 mm

Holding Down Bolts

Bolt Size - d

Select the size of bolt.

Number of Bolts - N_b

Select the number of bolts.

Bolt Span - s_g

Enter the bolt span.
↔ Range: >= 0 mm

Bolt Cross Center - s_b

Enter the bolt cross center distance.
↔ Range: >= 0 mm

Edge Distance - e_x

Displays the edge distance of bolts.

---

Bolt Anchorage

This page allows to enter bolt anchorage details.

☉Bolt with Plates
Choose this option to use bolt with plates.
☉Others Bolts
Choose this option to use other bolts.

Bolt with Plates

☐   Use default anchor dimensions based on bolt dia
Check this option to use default anchor dimensions based on the bolt diameter.

Embedment - E_b

Enter the embedment of anchor plate.
↔ Range: 200 to 1500 mm

Width of Anchor Plate (Sq.) - b_a

Enter the width of the anchor plate.
↔ Range: >= 0 mm

Thickness - t_a

Enter the thickness of the anchor plate.
↔ Range: 3 to 50 mm

Cover to Top Reinforcement - C (Pull Out = Shear)

Enter the cover to top reinforcement.
↔ Range: 20 to 70 mm

Other Bolts

Anchorage Capacity - Tension Per Bolt - P_a

Enter the anchorage capacity tension per bolt.
↔ Range: 0 to 1000 mm

Anchorage Capacity - Shear Per Bolt - P_s

Enter the anchorage capacity shear per bolt.
↔ Range: 0 to 1000 mm

---

Design Loads

This page allows to enter load details.

Design Axial Force - A_c

Enter the design axial load.
↔ Range: -15000 to 15000 kN

Design Shear Force - F_sv

Enter the design shear force.
↔ Range: 0 to 15000 kN

---

Design Setting

Setting for various Design Data such as Steel grade, Characteristic and Tensile Strength of Concrete, Coefficient of Friction, Electrode Classification and Bolt Pullout Based on Concrete are presented in this section. This setting pop-up can be accessed by clicking the bottom panel below the left navigation.

Steel Grade

Column Steel Grade / Base Plate Steel Grade - f_yc / f_yb

Select the grade of steel for column and base plate.

Bolt Property

Bolt Grade - f_b

Select the bolt grade.

Bolt Pull Out Based on Concrete in - Pull Out

Select whether bolt pull out based on concrete in tension or shear.

Concrete Property

Characteristic Strength of Concrete - f_cu

Select the characteristic strength of concrete.

Tensile Strength of Concrete - f_s (Pull Out = Tension)

↔ Range: >= 0.01 N/mm²

Shear Strength of Concrete - v_c (Pull Out = Shear)

↔ Range: TODO

Coefficient of Friction - µ

↔ Range: 0 to 1

Electrode Classification - EC

Select the electrode classification.

---

Error Handling

Errors and Warnings are generated to prevent any inadvertent error in the input data. This section describes how to handle the errors and warnings. These errors are displayed at the bottom of the input page when the data in one or more input fields invalidate each other.