Steel Sheet Piling Sections

IS 2314 — Scope: Key Specifications & Tables

Scope Summary

• Covers structural steel sheet piling sections: Z-type, U-type, Flat-type.
• Specifies dimensions, mass, sectional properties, and tolerances.
• Sections may bear the Standard Mark ensuring compliance with BIS quality control.

Key Tables & Formulas

1. Units (SI System)

2. Nominal Dimensions of U-Type Piling (mm)

Note: Clutch dimension not specified.

3. Mass & Sectional Properties of Sheet Piling (per metre wall)

4. Dimensional Tolerances (mm)

| Description | Z-Type | U-Type

IS 2314 Key References:

1. Standard Mark (Clause 10.1.1)

• Sections may bear the Standard Mark ensuring compliance with BIS quality control.
• Governed by the Bureau of Indian Standards Act, 1986.
• Assures inspection, testing, and continuous conformity checks.

2. International System of Units (SI Units)

3. Piling Section Properties (Clause 5.4, Table 4)

4. Nominal Dimensions of U-Type Piling (Clause 5.2, Table 2)

IS 2314: Types and Designation of Steel Sheet Piling Sections

Types of Sections

• Z-type: Interlocking Z-shaped profiles.
• U-type: U-shaped profiles.
• Flat-type: Flat steel sheets without interlocks.

Designation (Clause 4.1)

• Format: ISPS + Section Modulus (cm³/m) + Type symbol (Z, U, F)
• Example: ISPS 150Z means Z-type with 150 cm³/m section modulus.

Key Tables

Dimensional Tolerances (from Table 5, Clause 6.1)

• Width (W), Height (H), Thickness (t) tolerances differ by section type.
• Typical tolerances:
  • Width & Height: ±1.5 mm
  • Thickness: ±0.15 mm (varies with thickness)

Sectional Properties (From Table 4)

• Includes:
  • Cross-sectional area (A)
  • Section modulus (Z)
  • Moment of inertia (I)
  • Weight per meter (kg/m)

graph TD
  A[Steel Sheet Piling Sections]
  A --> B[Z-Type (ISPS xxxZ)]
  A --> C[U-Type (ISPS xxxU)]
  A --> D[Flat-Type (ISPS xxxF)]
  B --> E[Section Modulus, Area, Weight]
  C --> E
  D --> E

For detailed values, refer to Table 4 and Table 5 of IS 2314 for exact sectional properties and tolerances.

IS 2314: Designation System - Key Formulas, Tables & Specifications

1. Designation Format

• Sections are designated by codes like ISPS XXXX Z/U/F, where:
  • ISPS = Indian Standard Piling Section
  • XXXX = Sectional modulus per meter of wall (cm³)
  • Z/U/F = Section type (Z-type, U-type, Flat-type)

2. Key Tables

(Refer Table 4 for full data)

3. Nominal Dimensions (U-type example)

(Refer Table 2 for full dimensions)

4. Tolerances on Design Dimensions

IS 2314: Profile and Nominal Dimensions for Piling Sections

1. Profile & Nominal Dimensions

• Flat-type sections:

  • Profile as per Fig. 3
  • Nominal dimensions in Table 3

• U-Type sections:

  • Profile as per Fig. 2
  • Nominal dimensions in Table 2

• Sectional properties calculated using these nominal dimensions (Clause 1.1.1).

2. Dimensional Tolerances (Table 5, Clause 6.1)

• Thickness tolerance applies to all thicknesses in Tables 1, 2, and 3.

3. Interlock Dimensions (Fig. 4)

Summary Diagram (Profile Dimensions Flow)

graph TD
    A[Select Section Type] --> B{Type}
    B -->|Z-Type| C[Refer Fig.1 & Table 1]
    B -->|U-Type| D[Refer Fig.2 & Table 2]
    B -->|Flat-Type| E[Refer Fig.3 & Table 3]
    C --> F[

IS 2314: Dimensional Tolerances for Steel Sheet Piling

1. Tolerances on Width (W), Height (H), and Thickness (t) — Table 5 (Clause 6.1)

• Width W for Z-type refers to leg widths (C or D per Table 1).
• Thickness t corresponds to thickness values in Tables 1-3.

2. Tolerances on Design Dimensions — Table 6 (Clause 6.2.2)

3. Notes on Interlock Dimensions (Fig. 4)

• a = Button/Hook/Knuckle width
• b = Interlock opening

IS 2314: Surface Defects - Key Specifications & Tolerances

1. Dimensional Tolerances (Clause 6.1, Table 5)

• Width for Z-type refers to leg width (C or D in Table 1).
• Thickness refers to values in Tables 1, 2, and 3.

2. Surface Repairs by Grinding (Clause 8.1.1)

• Depth of ground portions must not exceed the negative thickness tolerance.
• Ground surfaces should be finished neat and smooth.

3. Camber Tolerance (Clause 6.5)

• Camber tolerance = 0.2% of the length of the piling section.

4. Nominal Dimensions & Properties (Selected Z-Type Sections, Tables 1 & 4)

5. Interlock Dimensions (Fig. 4)

IS 2314: Surface Repairs (Clause 8)

Key Specifications for Surface Repairs:

• Repair by Grinding (Clause 8.1.1):
  • Depth of grinding must not exceed the minus thickness tolerance of the sheet pile.
  • Ground surfaces must be finished neat and smooth.

Dimensional Tolerances (Clause 6.1, Table 5)

Important Notes:

• Thickness tolerance limits grinding depth.
• Clutch dimensions are manufacturer's discretion.
• Surface must be flat and straight (Clause 7.2).
• Interlock dimensions (a = button/hook/knuckle width, b = interlock opening) are critical for fit.

Summary Diagram: Grinding Repair Limits

flowchart LR
    A[Surface Defect] --> B{Grinding Repair?}
    B -->|Yes| C[Depth ≤ Thickness Tolerance]
    C --> D[Finish Neat]
    B -->|No| E[Reject or Replace]

For detailed dimensions and sectional properties, refer to Table 1 (Z-type dimensions) and Table 4 (Mass and Geometrical Properties) in IS 2314.

IS 2314: Strength of Joint - Key Points

1. Tensile Strength of Joints (Clause 9.1):

   • For flat-type sheet piles (steel per IS:226-1975), minimum tensile strength of joints = 400 t/m.
   • For other steel grades/types, strength to be agreed upon purchaser and manufacturer.

2. Welding Repairs (Clause 1.5b):

   • Repairs must be sound.
   • Extra weld thickness ≥ 1.5 mm above surface, then ground flush.

3. Dimensional Tolerances (Clause 6.1, Table 5):

4. Interlock Dimensions (Fig.4):

   • a = Button/Hook/Knuckle width
   • b = Interlock opening

5. Mass & Geometrical Properties (Selected Sections):

IS 2314: Mass and Geometrical Properties of Sheet Piling Sections

Key Table (Clause 5.4 - Table 4)

Important Specifications:

• Tolerance on Mass: +4% / -2.5% (Clause 6.3)
• All dimensions in millimeters (Clause 5.3)
• Sectional properties calculated with nominal dimensions (Clause 1.1.1)

Units (SI System):

• Length: meter (m)
• Mass: kilogram (kg)
• Section modulus: cm³
• Moment of inertia: cm⁴
• Sectional area: cm²
• Perimeter: cm

Typical Formulae:

• Section Modulus (Z): ( Z = \frac{I}{y} )
• Moment of Inertia (I): Depends on cross-section geometry; given per meter of wall.
• Mass per meter: Based on density × sectional area.

flowchart LR
    A[Nominal Dimensions] --> B[Sectional Area (cm²)]
    B --> C[Mass per meter (kg)]
    B --> D[Moment of Inertia (cm⁴)]
   

Camber Tolerance as per IS 2314 (Clause 6.5):

• Camber tolerance = 0.2% of the length of the member

This means:

[ \text{Maximum permissible camber} = \frac{0.2}{100} \times L = 0.002 \times L ]

where L = length of the structural member.

Summary Table:

Example:

For a beam of length 6 m:

[ \text{Max Camber} = 0.002 \times 6000 \text{ mm} = 12 \text{ mm} ]

Additional Relevant Tolerances (from Clause 6.1 & 6.2):

This camber tolerance ensures acceptable deflection during fabrication and installation, maintaining structural integrity and aesthetics.

Manufacturing and Quality Control - IS 2314 Key Points

1. Marking & Quality Assurance (Clause 10.1.1)

• Sections may carry the Standard Mark ensuring compliance with BIS inspection, testing, and quality control.
• Standard Mark usage follows the Bureau of Indian Standards Act, 1986.
• Continuous surveillance by BIS ensures conformity.

2. Dimensional Tolerances (Clause 6.1, Table 5)

• Thickness tolerances apply to all thicknesses in Tables 1, 2, and 3.
• Width for Z-type refers to leg widths (C or D).

3. Material Specification

• Copper bearing steel: Cu content 0.20% to 0.35% (Clause 2.2).
• Refer to relevant BIS standards for steel grades (standard, high tensile, weldable).

4. Mass & Geometrical Properties (Table 4)

Example for Z-type sheet piling: