| S.No. | Field / Checkpoint | Reference | Status |
|---|---|---|---|
| A. DEVIATION REGISTER | |||
| A1 | S.No. + Clause / Specification / Drawing reference deviated Acceptance: Each deviation traceable | Specific NIT reference | OK NC NA |
| A2 | NIT requirement (verbatim) Acceptance: Exact copy of NIT clause | Original specification | OK NC NA |
| A3 | Bidder offered / proposed deviation (verbatim) Acceptance: Bidder's intended modification | Bidder's alternative | OK NC NA |
| A4 | Technical justification + impact on quality / life cycle Acceptance: Justification accepted / rejected by employer | Engineering reasoning | OK NC NA |
| B. EMPLOYER ACCEPTANCE | |||
| B1 | Accept / Reject / Conditional acceptance Acceptance: Reasons documented | Decision per tender committee | OK NC NA |
| B2 | If accepted — price adjustment if any Acceptance: Loaded back to bid value | Cost implication assessed | OK NC NA |
During tender evaluation, contractors review the technical specifications + drawings + BOQ. Where the contractor proposes an alternative material, methodology, or product that meets functional requirements but differs from the specification, this is a technical deviation.
Reasons for technical deviations: - Specified product unavailable — supplier discontinued or local availability issue - Better technology — newer / superior alternative available - Cost-effective alternative — same performance, lower cost - Local manufacturer preferred — supports domestic + faster lead time - Climate-specific adaptation — local weather requires different material grade - Site-specific constraint — access limitation, transport limitation
The Technical Deviation Sheet documents each proposed change with: specification reference, original requirement, proposed alternative, technical justification, equivalence basis (test reports / certifications). Client evaluates + accepts / rejects each deviation.
Each row contains: 1. Specification clause reference (e.g., 'Tech Spec Vol-2 Section 5.3.2') 2. Original specified item 3. Proposed alternative 4. Equivalence basis (IS conformance, manufacturer's data, test reports) 5. Cost implication (saving or premium) 6. Schedule implication 7. Quality / performance equivalence (engineer-certified) 8. Reference standards / certifications attached 9. Client decision: Accepted / Conditionally Accepted / Rejected 10. Conditions of acceptance (if conditional)
Common deviation areas: - Cement type — OPC 43 specified, OPC 53 proposed (better strength, similar cost) - Rebar grade — Fe 415 specified, Fe 500 proposed (higher strength, better cost-performance) - Concrete grade — M25 specified, M30 proposed (more durable, slight premium) - Pipe material — RCC specified, HDPE proposed (lighter, easier to install) - Brick type — clay specified, AAC blocks proposed (lightweight, energy-efficient) - Cable type — copper specified, aluminium proposed (cost saving for large cross-sections) - Manufacturer / brand — specific brand specified, equivalent brand proposed - Construction methodology — specific method specified, alternative proposed
1. No equivalence data provided — proposed alternative not backed by test reports; client rejects without further consideration.
2. Cost impact not declared — alternative slightly higher cost; not mentioned upfront; later cost claim.
3. Compatibility ignored — proposed alternative incompatible with adjacent materials (e.g., aluminium-vs-copper galvanic issue).
4. Performance over time — proposed material may meet initial tests but degrade differently from specified. Long-term durability not assessed.
5. Maintenance / service implications — alternative may need different maintenance protocols; not communicated.
6. Statutory compliance gaps — proposed alternative may not have BIS / FSSAI / other required certifications.
7. Sub-contractor coordination — alternative requires different sub-contractor capability; not verified upfront.
8. Limited inspection / testing capability — proposed alternative requires different testing equipment not at site.
9. No appeal / negotiation mechanism — client rejects deviation; contractor has no remedy; tender becomes one-sided.
Companion formats: - Deviation Sheet — Commercial (FMT-TND-012) — commercial / terms deviations - Letter of Award (FMT-TND-014) — accepted deviations form part of contract - Performance BG Submission (FMT-TND-015) - Contract Amendment Log (PMC-BIL-LOG-004) — post-award deviations
Standards / contract types: - CPWD General Specifications 2019 — standards for materials + methodologies - IS Codes — references for material equivalence (IS 269, IS 1786, IS 2062, etc.) - FIDIC Sub-Contractor / Variations clauses - NHAI / MoRTH / CPWD standard contracts — Indian government-specific - BIS hologram requirements — many products under QCO need BIS license