Vitreous Sanitary Appliances (Vitreous China) -, Part 16: Specific Requirements of Wash Down Wall Mounted Water Closets

IS 2556 (Part 16) : 2002 — Scope & Key Specifications for Wall Mounted Water Closets

Scope (Clause 4.2)

• Wall mounted WCs may vary in pattern/size if agreed by manufacturer and purchaser.
• All requirements except functional dimensions must comply with the standard.

Key Functional Dimensions (Table 1, mm)

Key Connecting Dimensions (Table 2, mm)

IS 2556 (Part 16) - General Requirements & Key Specifications for Wall Mounted Water Closets

1. General Requirements

• Terminology, materials, manufacture, glazing, defects, thickness, tolerances, performance, and test methods conform to IS 2556 (Part 1).
• Rounding off numerical values follows IS 2:1960 rules.
• Wall mounted WCs may vary in pattern/size by agreement but must meet all standard requirements except functional dimensions.

2. Functional Dimensions (Table 1) [All in mm]

3. Connecting Dimensions (Table 2) [All in mm]

IS 2556 Part 16 — Wall Mounted Water Closets: Key Patterns, Dimensions & Specifications

Patterns (Clause 4.1)

• Pattern 1: WC with frame rag bolts fixing & concealed outlet (Fig. 1).
• Pattern 2: WC fixed on top of bracket (Fig. 2).

Functional Dimensions (Table 1, mm)

Connecting Dimensions (Table 2, mm)

IS 2556 (Part 16): Dimensions & Tolerances for Wall Mounted Water Closets

Table 1: Functional Dimensions (mm)

Table 2: Connecting Dimensions (mm)

IS 2556 (Part 16): Construction & Fixing Arrangements for Wall Mounted Water Closets

Key Functional Dimensions (Table 1, mm)

Connecting Dimensions (Table 2, mm)

Fixing & Load Test (Clause 9.2)

• Fix WC on smooth wall with mortar layer for even contact.
• Apply 4 kN (400 ± 15 kg) load for 1 hour on a 100×100 mm wooden beam across the WC top opening.
• WC must remain stable and undamaged after test.
• Minimum gap from lowest WC portion to finished floor: 40 mm.

Additional Notes

• Fixing bolts:

IS 2556 (Part 16): Flushing and Performance Tests Summary

1. Flushing Test (Clause 8.1 - Toilet Paper Test)

• Fill WC to normal water seal level.
• Add 6 pieces of toilet paper or 0.05 mm thick polyethylene sheets (~150 x 115 mm), loosely crumpled.
• Flush 4 times; WC must discharge full paper at least 3 out of 4 times.

2. Flushing Test Setup (Clause 8.3)

• Connect WC to concealed water storage with 10 litres discharge capacity.
• Ensure smooth, uniform inside surface for efficient flushing.

3. Key Functional Dimensions (Table 1)

4. Connecting Dimensions (Table 2)

5. Additional Notes

• Special connectors required for Pattern 1 horizontal outlet (Clause 6.3).
• Outlet surface: glazed if no

IS 2556 Part 16: Load and Stability Test Key Points

1. Load Test (Clause 9.2) - Wall Mounted WC

• Load applied: 400 ± 15 kg (~4 ± 0.15 kN)
• Duration: 1 hour
• Load application: On a wooden beam (100 mm × 100 mm cross-section) placed across the WC’s top opening center.
• Surface: Smooth wall with mortar or facing material between WC back and wall.
• Purpose: Check stability and structural integrity after load application.

2. Single Ball Test (Clause 8.4)

• Details not fully specified here, but typically involves dropping a ball to test impact resistance.

3. Toilet Paper Test (Clause 8.1)

• Fill WC to normal water seal level.
• Use 6 pieces of toilet paper or 0.05 mm thick polyethylene sheet (150 × 115 mm).
• Flush 4 times; WC must discharge paper fully at least 3 times.

4. Sampling & Inspection

• Follow IS 9140 for sampling, process, and lot inspection.

Summary Table: Load Test Parameters

flowchart LR
    A[Wall Mounted WC] --> B[Mortar Bed on Smooth Wall]
    B --> C[Load Application]
    C --> D[Wooden Beam 100x100 mm]
    D --> E[Load 400 ± 15 kg for 1 hour]
    E --> F[Check for Stability & Damage]

Note: Follow IS 2:1960 for rounding off test values as per specified precision.

Sampling, Process Inspection, and Lot Inspection as per IS 2556 (Part 16):

• Reference Standard: The methods for sampling, process inspection, and lot inspection are specified in IS 9140.
• Rounding Off: Test results must be rounded off according to IS 2:1960, maintaining the same number of significant figures as the specified value.
• Inspection Approach:
  • Sampling involves selecting representative units from a batch.
  • Process inspection monitors production quality during manufacturing.
  • Lot inspection evaluates a batch after production to accept/reject based on criteria.

Key Points from IS 9140 (Sampling & Inspection):

Rounding Off Example (IS 2:1960):

• Specified value: 12.5
• Test result: 12.47 → Rounded to 12.5

flowchart TD
    A[Start Production] --> B[Process Inspection]
    B --> |If OK| C[Continue Production]
    B --> |If Not OK| D[Correct Process]
    C --> E[Sampling]
    E --> F[Lot Inspection]
    F --> |Accept| G[Dispatch Lot]
    F --> |Reject| H[Rework or Reject Lot]

For detailed sampling plans and acceptance criteria, refer directly to IS 9140.

IS 2556 (Part 16): 2002 - Marking and Certification Key Points

• Clause 11.2: Wall-mounted water closets may bear the BIS Standard Mark.
• Clause 11.2.1: Use of the Standard Mark is regulated by the Bureau of Indian Standards Act, 1986.
• Manufacturers must obtain a license from BIS to use the Standard Mark.
• The Standard Mark certifies compliance with IS 2556 (Part 16) quality and performance requirements.
• For detailed conditions and licensing, contact the Bureau of Indian Standards.

Summary Table: BIS Certification Marking

Contact for BIS Licensing

• BIS Headquarters: Manak Bhavan, 9 Bahadur Shah Zafar Marg, New Delhi 110002
• Regional Offices available across India for assistance.

flowchart LR
    A[Manufacturer] --> B[Apply for BIS License]
    B --> C{BIS Evaluation}
    C -->|Compliant| D[License Granted]
    C -->|Non-Compliant| E[License Denied]
    D --> F[Use Standard Mark on Product]
    F --> G[Market Product with BIS Certification]

Note: No specific formulas or tables for marking are provided in IS 2556 (Part 16). The focus is on compliance and licensing for use of the BIS Standard Mark.

IS 2556 (Part 16): Committee Composition & Key Specifications Summary

Committee Composition

• Refer Annex A of IS 2556 (Part 16) for detailed committee members.
• Committee: Sanitary Appliances and Water Fittings Sectional Committee, CED 3.

Key Functional Dimensions (Table 1) for Wall Mounted Water Closets (mm)

Connecting Dimensions (Table 2) (mm)