How to Create a Temporary Works Register & Design Brief (With BS 5975 Examples)
A temporary works register template is the central control document used on UK construction sites to track every temporary engineering solution, from excavation shoring and tower crane bases to falsework and facade retention, from initial concept through to safe dismantling. Alongside a structured temporary works design brief example, the register forms the legal backbone of site compliance under BS 5975:2019+A1:2021 and the Construction (Design and Management) Regulations 2015 (CDM 2015).
Without an accurate register and a comprehensive design brief, critical interfaces get missed, designs go unchecked, and premature striking risks catastrophic structural collapse. This practical guide provides a ready-to-use UK temporary works register layout, a worked design brief example, and the exact procedures taught in our accredited CITB Temporary Works Coordinator (TWC) course.
What is a Temporary Works Register? (And When Must It Be Started?)
A Temporary Works Register is a live project log maintained by the Temporary Works Coordinator (TWC) that records every identified temporary works item, its risk classification, its BS 5975 design check category, the appointed designer and checker, and the sign-off dates for Permits to Load and Strike.
A common mistake on UK construction projects is waiting until mobilisation on site to open the register. Under Section 2 of BS 5975, the Principal Contractor's Designated Individual (DI) must ensure temporary works procedures are active during the pre-construction and tender phase.
Starting the register early allows the project team to apply the ERIC hierarchy of risk control (Eliminate, Reduce, Inform, Control) before ground is broken. For instance, early collaboration between the Principal Designer and the TWC might alter a permanent retaining wall design so that complex temporary propping is eliminated entirely.
Who is Responsible for Managing the Register?
While the Principal Contractor holds overarching statutory duty under CDM 2015 Regulation 19 to prevent instability or collapse, day-to-day management of the register falls to the formally appointed Temporary Works Coordinator (TWC). Note that holding a standard site management ticket does not automatically authorise you to manage this process, read our guide on whether SMSTS covers Temporary Works Coordinator duties to understand how Tier 1 contractors assess competency.
Temporary Works Register vs. Temporary Works Design Brief: Key Differences
New coordinators frequently confuse the Temporary Works Register with the Temporary Works Design Brief. While both are mandated by BS 5975, they serve distinct operational functions across the project lifecycle.
| Feature | Temporary Works Register | Temporary Works Design Brief |
|---|---|---|
| Primary Purpose | Tracks the status, approvals, and permits of all temporary works items across the entire project. | Provides the engineer with the exact technical data required to design one specific temporary works item. |
| Document Owner | Maintained continuously by the appointed Temporary Works Coordinator (TWC). | Compiled or approved by the TWC and issued to the Temporary Works Designer (TWD). |
| When Created | Initiated at the pre-construction / tender stage and updated weekly until project handover. | Created prior to the design of an individual item (allowing sufficient lead time for checking). |
| Core Contents | Item ref, description, location, risk rating, check category (0–3), designer/checker names, permit status. | Permanent works drawings, soil/geotechnical logs, concrete pour rates, wind loads, programme sequence. |
| BS 5975 Reference | BS 5975 Clause 9.2 (Temporary Works Register). | BS 5975 Clause 11 (The Design Brief). |
Essential Columns Every Temporary Works Register Needs (Worked UK Template)
To pass an audit by the Health and Safety Executive (HSE) or a Tier 1 Principal Contractor, your temporary works documentation checklist must track each item from design conception to physical dismantling. A basic spreadsheet listing only item names and dates is insufficient.
Below is a worked temporary works register template demonstrating how three typical UK site packages should be logged and tracked:
| TW Ref | Item Description & Location | Risk Level (H/M/L) | BS 5975 Check Cat | Design Brief Issued | Designer (TWD) & Checker | Design & Check Approved | Assigned TWS | Permit to Load Issued | Permit to Strike / Dismantle | Status |
|---|---|---|---|---|---|---|---|---|---|---|
| TW-001 | Tower Crane TC1 Reinforced Concrete Base & Grillages (Grid A1–B2) | High | Cat 2 (Independent Team) | 12/08/2026 (Rev A) | Design: Apex Civils Ltd Check: K. Patel (CEng) |
04/09/2026 | J. Miller (TWS) | 18/09/2026 | Pending Q2 2027 | Active / Loaded |
| TW-002 | Deep Drainage Trench Box & Sheet Piling Support (Chainage 40m–95m, 4.2m depth) | Medium | Cat 1 (Different Individual) | 01/09/2026 (Rev B) | Design: GroundForce Shoring Check: S. Davies |
15/09/2026 | R. Evans (TWS) | 22/09/2026 | 14/10/2026 | Struck & Closed |
| TW-003 | Level 2 In-Situ Transfer Slab Falsework & Backpropping (Core B) | High | Cat 3 (External Consultancy) | 05/10/2026 (Rev A) | Design: FormTech UK Check: Wallace Structural LLP |
Awaiting Cat 3 Certificate | J. Miller (TWS) | Hold Point Active | Hold Point Active | In Design Check |
Why This Register Structure Works on Site
- Explicit Hold Points: Columns for Permit to Load and Permit to Strike prevent premature loading of falsework or unauthorised removal of backpropping.
- Clear Accountability: Naming both the Designer (TWD) and the independent Checker proves compliance with BS 5975 design verification rules.
- Supervisor Allocation: Assigning a named Temporary Works Supervisor (TWS) to each package clarifies who performs the daily physical inspections on site. (Not sure how the two roles divide duties? Read our breakdown of Temporary Works Coordinator vs. Supervisor training.)
Practical Training Tip: Setting up live registers, identifying missing hold points, and auditing subcontractor submissions are core practical exercises covered during the CITB TWC training course at TE Training Academy.
How to Write a Bulletproof Temporary Works Design Brief (Checklist)
A temporary works design is only as safe as the brief provided to the engineer. According to the Temporary Works Forum (TWf), incomplete or inaccurate design briefs are one of the leading causes of on-site structural failures and costly programme delays.
Before issuing a brief to an internal engineer or a proprietary equipment supplier (such as a formwork or scaffolding contractor), work through this temporary works documentation checklist:
- Project Scope & Permanent Works Context: Include the latest revision of permanent works drawings, structural specifications, and general arrangement plans. Never allow a designer to work from "Preliminary" or superseded drawings.
- Geotechnical & Ground Investigation Data: For earthworks, trench shoring, mobile crane outrigger mats, or piling platforms, provide the full factual and interpretative site investigation (SI) report. Specify California Bearing Ratio (CBR) values, allowable bearing pressures, groundwater levels, and nearby backfilled trenches.
- Applied Loads & Environmental Conditions: State the exact vertical, horizontal, and dynamic loads. For concrete formwork, specify the rate of rise (metres per hour), concrete density, pour temperature, and slump, as these directly dictate lateral hydrostatic concrete pour pressures. For scaffolding and hoarding, specify site elevation and wind loading exposure.
- Structural Interfaces & Site Constraints: Detail overhead power lines, underground utilities, adjacent party walls, live rail/highway boundaries, and restricted working room.
- Construction Programme & Phasing Sequence: Explain how the structure will be built, loaded, and dismantled. Include concrete curing strength requirements (e.g., reaching 25 N/mm² cube strength before striking falsework) and multi-level backpropping sequences.
- Proposed BS 5975 Design Check Category: State whether the finished design requires a Category 0, 1, 2, or 3 check so the designer and checker can allocate appropriate engineering resources.
Worked Example: UK Temporary Works Design Brief (Deep Trench Excavation)
Use this temporary works design brief example as a blueprint for your own company documentation. Every brief should carry a unique reference number matching its entry on your Temporary Works Register.
TEMPORARY WORKS DESIGN BRIEF
Project Name: Riverside Mixed-Use Development, Manchester
TW Register Reference: TW-002 (Revision B)
Date Issued: 01 September 2026
Issued By (TWC): David Clarke (CITB TWC Cert No: 0098421)
Issued To (TWD): GroundForce Shoring Engineering Department
1. DESCRIPTION OF TEMPORARY WORKS REQUIRED
Design of temporary excavation support system for the installation of a new 1200mm diameter precast concrete storm attenuation sewer between Manhole MH4 and Manhole MH5 (Chainage 40m to 95m). Maximum excavation depth is 4.20m below existing reduced ground level (104.50m AOD).
2. PERMANENT WORKS & SITE DRAWINGS ATTACHED
- Permanent Drainage Layout & Longitudinal Section: Drg No. RMD-CIV-042 Rev C03
- Underground Utilities & Buried Services Survey: Drg No. RMD-SUR-008 Rev C01
- Phase 2 Geotechnical Interpretative Report: Ref GIR-2026-09 (Boreholes BH3 & BH4)
3. GROUND & WATER TABLE CONDITIONS
- 0.0m to 1.4m depth: Made ground (brick/concrete crush, loose sandy clay).
- 1.4m to 5.0m depth: Firm becoming stiff glacial till (cohesive clay, Cu = 65 kPa).
- Groundwater encountered at 2.8m depth in BH3; localized sump pumping will be utilised.
4. SURCHARGE LOADS & ADJACENT CONSTRAINTS
- A 35-tonne tracked excavator (CAT 336) will operate at a minimum standoff distance of 2.0m from the north edge of the trench to lift and place pipe sections.
- Live site haul road runs parallel to the south edge at 3.5m offset (apply minimum 20 kN/m² surcharge load on south side, or 45 kN/m² under excavator tracks on north side).
- Maximum required clear vertical working height below lowest strut/frame: 1.85m to allow safe lowering of 2.5m long precast pipe barrels.
5. CONSTRUCTION & STRIKING SEQUENCE
- Install dig-and-push trench sheets and hydraulic bracing frames progressively during excavation.
- Edge protection (1.1m rigid barriers + toeboards) to be integrated into top of sheets.
- Backfill in compacted 300mm granular layers; frames and sheets to be extracted progressively only after pipe surround reaches 300mm above crown and Permit to Strike is signed by TWC.
6. DESIGN CHECK CATEGORY & DELIVERABLES REQUIRED
- Assigned BS 5975 Check Category: Category 1 (Checked by a second qualified engineer within GroundForce Shoring).
- Required Deliverables: Full general arrangement drawings, installation/extraction sequence notes, residual risk register (CDM 2015), and signed Category 1 Design & Check Certificates.
- Required Return Date: 11 September 2026 (minimum 5 working days prior to excavation start).
Assigning BS 5975 Design Check Categories (Cat 0 to Cat 3)
One of the most critical columns in your temporary works register template is the Design Check Category. Under BS 5975, every temporary works design must undergo an independent check to verify its concept, structural adequacy, and compliance with the brief.
For a deeper technical breakdown of British Standards, read our dedicated BS 5975 Temporary Works Coordinator Guide. When completing your register, use this matrix to select the correct category:
| Check Category | Scope & Complexity | Who Can Perform the Design Check? | Typical UK Site Examples |
|---|---|---|---|
| Category 0 | Standard solutions and simple proprietary assemblies within manufacturer limits. | Another competent member of the site or design team (verifying correct application of standard guidance). | Standard NASC TG20 compliant tube-and-fitting scaffolds, proprietary trench boxes used strictly within manufacturer depth tables. |
| Category 1 | Simple designs using established engineering methods. | Another engineer within the same organisation who was not directly involved in preparing the original design. | Basic formwork for walls/columns up to 3m high, simple timber propping, standard crane outrigger mat calculations. |
| Category 2 | More complex or innovative designs involving significant structural interaction or geotechnical risk. | An independent team or individual within the same organisation who has had no prior involvement in the design concept. | Tower crane bases, deep basement propping, complex facade retention, heavily loaded transfer slab falsework. |
| Category 3 | Complex, novel, or high-consequence designs where failure could cause catastrophic collapse or public harm. | A completely separate, external engineering organisation (independent third-party consultancy). | Major bridge launching gantries, temporary works over live Network Rail tracks or motorways, deep cofferdams in tidal rivers. |
Preparing for Your CITB Exam? Design Check Categories 0 to 3 are heavily tested in the end-of-course assessment. Review our guide on CITB Temporary Works Coordinator exam questions and pass rates or book your place directly on our 2-day CITB Temporary Works Coordinator (TWC) course.
5 Common Documentation Pitfalls With Subcontractor Designs
Even when a Principal Contractor sets up a clean temporary works register template, documentation often breaks down once specialist subcontractors come on board. Watch out for these five frequent compliance failures:
- Treating Proprietary Supplier Quotes as Approved Designs: A commercial quotation or preliminary layout from a formwork or shoring hire company is not an approved construction drawing. Never allow installation until the supplier issues a final drawing marked "For Construction" alongside a signed Design Check Certificate.
- Missing Revision Control on Site: If a site engineer tweaks an excavation depth by 500mm or relocates a mobile crane due to a buried utility, the original design brief is invalidated. The TWC must issue a revised brief, log the new revision on the register, and obtain re-signed certificates before work proceeds.
- Skipping Formal "Hold Points" (Permits to Load & Strike): A completed register entry does not mean concrete can be poured. Physical pre-load inspections must be documented via a formal Permit to Load and Permit to Strike procedure before loading or dismantling begins.
- Assuming Subcontractors Manage Their Own Register: While a specialist groundwork or concrete frame contractor may employ their own TWC to manage internal packages, the Principal Contractor's TWC retains overall responsibility for maintaining the master project register and coordinating interfaces between trades.
- Letting TWC Qualifications Lapse: An audit trail is legally compromised if the coordinator signing off design briefs holds an expired certificate. Keep track of the CITB TWC 5-year expiry and refresher rules via the CITB Construction Training Register.
Master Temporary Works Coordination With TE Training Academy
Managing temporary works registers, evaluating design briefs, and enforcing BS 5975 hold points requires structured, practical training. Whether you are a Site Manager, Civil Engineer, or Project Manager looking to step into an appointed role, our accredited CITB Temporary Works Coordinator (TWCTC) training course equips you with the exact frameworks, templates, and statutory confidence required by UK Tier 1 contractors.
Frequently Asked Questions
Is a Temporary Works Register a legal requirement in the UK?
While the phrase "Temporary Works Register" is not explicitly written into the CDM Regulations 2015, Regulation 19 legally requires contractors to ensure all practicable steps are taken to prevent any new or existing structure from collapsing or becoming unstable. Because the Health and Safety Executive (HSE) uses BS 5975 as the approved benchmark for compliance, maintaining a Temporary Works Register is the universally expected standard for proving statutory due diligence on UK sites.
Who writes the Temporary Works Design Brief?
Under BS 5975 Clause 11, the Temporary Works Coordinator (TWC) is responsible for ensuring a comprehensive Design Brief is prepared and issued to the Temporary Works Designer. While a site engineer or subcontractor may draft the technical details, the appointed TWC must review, approve, and log the brief in the Temporary Works Register before design work commences.
Does a TG20 compliant scaffold need to go on the Temporary Works Register?
Yes. Even if a tube-and-fitting scaffold meets NASC TG20 compliance sheet criteria and does not require a bespoke structural calculation, it is still a temporary works structure. It should be logged on the Temporary Works Register as a Category 0 item so that ground bearing capacity, tie patterns, and handover inspections are formally tracked.
