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Handbook for Clerks of Works - 3rd Edition - ISBN: 9780851398532, 9781483102344

Handbook for Clerks of Works

3rd Edition

Greater London Council Department of Architecture and Civic Design

Author: Greater London Council
eBook ISBN: 9781483102344
Imprint: Architectural Press
Published Date: 1st July 1983
Page Count: 144
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Handbook for Clerks of Works, Third Edition: Greater London Council Department of Architecture and Civic Design provides information pertinent to the role of the clerk of works in site supervision. This book outlines the specific duties and responsibilities of the clerk of works. Organized into 25 chapters, this edition begins with an overview of the varieties of duties as well as the specific limitations to duties of clerk of works. This text then explains the duty of the clerk of works to obtain a small-scale layout of the site before the briefing meeting, and should visit the site, so as to be familiar with the site location, boundaries, configuration, adjoining owners, and spoil clearance position. Other chapters consider the level record plan that should be signed by the clerk of works. The final chapter deals with the relations of clerk of works with other departments and branches. This book is a valuable resource for clerks of works.

Table of Contents

1 Duties and Responsibilities of a Clerk of Works

1 Generally

2 Definition of Duties

3 Effect of Clause 10

4 Definition of Clerk of Works Duties in Issue of Instructions

5 Contractor's Attitudes

6 Specific Limitations to Clerk of Works Duties

7 Variety of Duties of a Clerk of Works

8 Knowledge of Contract Documents

9 Building Regulations and Acts

10 Cooperative Relations with Agent

11 Anticipation

12 Interpretation

13 Inspection

14 Reporting

15 Recording and the Job Diary

16 Diary Items

17 Issue of Diary

18 Query and Answer Book

19 Weekly Report—General Remarks

20 Percentage Completion Figures for Housing

21 Safety

22 Labour Disputes

2 Commencement of a Contract

1 Briefing Meetings

2 Handing-Over of Site

3 Siting of Offices

4 Telephone

5 Datum Points for Setting Out and Levelling

6 Trees

7 Contractor's Name Boards

8 Council Notice Boards

9 Bulk Supplies

10 Existing Services

11 Levels Over Site

12 Pavements

3 Site Levels and Boundaries

1 Surface Levels of Site

2 Fly Tipping

3 Agreement and Recording of Surface Levels

4 Level Book

5 Datum for Levels

6 Adjoining Property

7 Damage to Property

8 Adjoining Contracts

9 Completed Services

10 Site Boundaries

11 Street Lighting

12 Temporary Fencing Owned by the Council

4 Contract Documents

1 Form of Contract

2 Contract Drawings

3 Clerk of Works in the Form of Contract

4 Matters on Which the Architect is Empowered to Issue Instructions

5 Confirmations within Two Working Days

6 Timely Supply of Information

7 Extension of Time of Completion

8 Stoppages

9 Nominated Sub-Contractors and Suppliers

10 Care of Drawings

11 Amendments to Drawings and Documents

12 Index to Specification or Contract Bills

13 Return of Documents

14 Completion Certificates

5 Progress of Works

1 Responsibility of Clerk of Works for Progress

2 Weekly Report—to Chart Progress of the Works and Factors that Affect that Progress

3 Records of Labour

4 Record of Stoppages

5 Potential Causes of Delay

6 Progress Charts

7 Site Meetings

8 Marking up Progress Charts

9 Routine Records of Progress Matters

10 Progress Difficulties

11 Errors Involving Loss of Time

6 Instructions to Contractors

1 Additional Works

2 Site Instructions by Clerk of Works

3 Dayworks

4 Contractor's Vouchers

5 Contractor's Paysheets

6 Instruction to Correct Defective Work

7 Site Investigations

1 General

2 First Investigation of a Site

3 Soils Investigation by Specialist Firms

4 Primary Purpose of Term Contracts

5 Other Soils Engineering Problems

6 Chemical Analyses

7 Co-Ordination of Theory and Practice

8 Spacing of Trial Bores

9 Sub-Soil Soundings

10 Code of Practice

8 Foundations

1 Setting Out Foundations

2 Bottoms of Excavations

3 Excavation Beyond Contract Depth

4 Visits of Structural Engineers to Sites

5 Concreting Foundations

6 Records of Foundations

7 Physical Start to Individual Blocks

8 Records of Obstructions

9 Piled Foundations

10 Water in Excavated Foundations

11 Extent of Excavations

12 Safety in Excavations

13 Objects of Antiquity

14 Cultivation of Areas to be Planted or Grassed

15 Information

9 Drainage

1 Checking Levels and Locations of Existing Sewers

2 Setting Out

3 Excavations

4 Support and Protection of the Proposed Sewers and Drains

5 Back-Filling

6 Timber Left in

7 Testing of Sewer and Drains

8 Connection to Existing Sewers

9 Handing Over of Sewers and Drains

10 Concrete and Reinforced Concrete

1 Code of Practice 110

2 Developments

3 Types of Concrete

4 Definitions

5 Demonstration that Designed Mix Achieves the Appropriate Surface Finish

6 Grades of Concrete

7 The London Building Act

8 Departmental Preambles

9 Proportioning Materials on Site

10 Frequent Test Cubes

11 Calcium Chloride in Concrete

12 Change in Materials

13 Competent Supervision by Contractor

14 Ready Mixed Concrete—Choice of Depot

15 Minimum Cement Content—Ready Mixed Concrete

16 Careful Check of Ready Mixed Concrete by Clerk of Works

17 Check of Delivery Times—Ready Mixed Concrete

18 Disclosure of Additives

19 Mixing Concrete on Site

20 Materials for Concreting on Site

21 Marine Aggregates

22 Gauge Boxes

23 Mixer Size

24 Formwork

25 Cleaning Out Formwork

26 Placing of Concrete

27 Construction Joints

28 Concreting in Cold Weather

29 Compaction of Concrete

30 Curing and Protection

31 High Alumina Cement

32 Reinforcement

33 Provision for Pipes

34 Striking of Formwork

35 Damaged or Defective Work in General

36 Specified Surface Finishes

37 Colour

38 Vertical Alignment and Setting Out in Multistorey Reinforced Concrete Work

39 Clerk of Works to Seek Instructions on Accuracy Measurements that are to be Taken

40 Designed Mixes—Field Control Samples and Test Cubes

41 Nominal or Prescribed Mixes—Field Control Samples and Test Cubes

42 B.S. References for Sampling, Slump and Cubes

43 Covermeter Checks

11 Brickwork

1 Setting Out of Brickwork

2 Datum for Brickwork

3 Damp Proof Courses

4 Points for Attention in Brickwork

5 Particular Attention to Cavity Brickwork

6 Weep Holes

7 Closure of Cavity

8 Snap Headers

9 Mortar Mixing

10 Pointing

11 Sample Brick Panels

12 Sample Loads of Bricks

13 Brickwork in Frosty Weather

14 Admixtures

15 Examination of Brickwork Built in Frost

16 Sills and Thresholds

17 Partition Blocks

18 Tests during brickwork

19 Flues

20 Making Good to Ducts and Other Party Structures

21 Records that are to be Kept of All Cavity and Similar Brickwork

22 Manner in Which Records are to be Kept

23 Cladding Panels

24 Cracking of Brickwork and Failures of Brick-Cladding

25 Code of Practice C.P. 121

26 Placing of Concrete

27 Construction Joints

28 Concreting in Cold Weather

29 Compaction of Concrete

30 Curing and Protection

31 High Alumina Cement

32 Reinforcement

33 Provision for Pipes

34 Striking of Formwork

35 Damaged or Defective Work in General

36 Specified Surface Finishes

37 Colour

38 Vertical Alignment and Setting Out in Multistorey Reinforced Concrete Work

39 Clerk of Works to Seek Instructions on Accuracy Measurements that are to be Taken

40 Designed Mixes—Field Control Samples and Test cubes

41 Nominal or Prescribed Mixes—Field Control Samples and Test Cubes

42 B.S. References for Sampling, Slump and Cubes

43 Covermeter Checks

12 Stress Grading of Timber

1 Code of Practice C.P. 112

2 Stress Grading

3 Methods of Grading

4 Limitations of Machine Stress Grading

5 Colour Coding in Machine Grading

13 Joinery

1 Timber

2 Timber Windows

3 Quality of Timber

4 Early Decay of Timber

5 Early Occurrence of Wet Rot

6 Moisture

7 Sapwood in Softwood

8 Sapwood in Hardwood

9 Measures to be Taken with Softwood in Presentday Use

10 Preservation

11 Moisture Content of Joinery as Delivered on Site

12 Maintenance of Low Moisture Content

13 Special Steps for Centrally Heated Buildings

14 Moisture Danger Limit

15 Examination of Joinery Drawings and Specification

16 Sample Items of Joinery

17 Visits to Joinery Works

18 Rules for Visits to Works

19 Guidance Notes on Joinery Inspections

20 Earlier Specifications

21 Windows for Breakdown Examination

22 Window Test Rigs

23 The Combed Joint

24 Glues

25 Notes on Priming

26 Hardwood Flooring on Screeds

27 Preservation—Wooden Doors to Garages

28 Skirtings

29 Paint Protection of Putties

14 Mastic Asphalt Roofing

1 Information Necessary to All Clerks of Works

2 Definition of Mastic Asphalt

3 BRS Check on Asphalt Roofs

4 Successful Use of Mastic Asphalt

5 Appropriate Inspection by Clerk of Works

6 Typical Faults

7 Reflective Treatments

8 A Small Working Gang and its Tools and Equipment

9 Typical Working Operations

10 The Underlay

11 Overall Thickness of Asphalt and Number of Coats

12 Temporary Applications of Asphalt

13 Detailing

14 Improvements to Certain Details

15 Plastering

1 Trueness of the Plastering System

2 Thin Coat

3 1 in 600 Tolerance

4 Quality of Workmanship in Plastering

5 Sample Dwellings

6 Preparation of Background for Plastering

7 Excessive Making Good of Plaster

8 Cleanliness in Plastering

9 Mixes for Plastering

10 Detailed Inspection of Plaster Work

11 Sound Insulating Quilt

12 Screed for Thermoplastic Tiles

13 Protection from Weather

14 Temporary Lighting

15 Patching

16 Bonding Agents

17 Preference for Mechanical Key

16 Decoration

1 Inspection—General

2 Quality of Finished Work

3 Preparation

4 Dry Surfaces

5 Faulty Materials

6 Number of Coats of Paint

7 Cleanliness of Finished Paint Work

8 Delivery of Paint

9 Dilution of Paints—General

10 Primers for Joinery

11 Brushes for Priming Joinery

12 Paint Tests

13 Paint Sampling

14 Excessive Thinning of Paints

15 Instant Paint Testing

16 List of Approved Brands

17 Protection of Finished Work and Protection in Storage

1 General Protection

2 Orderliness of Site

3 Waste of Materials

4 Stonework and Precast Work

5 Protection of New Brickwork

6 Protective Measures for Concrete

7 Protection in Storage

8 Storage of Sanitary Goods

9 Plumbing—Frost Precautions

10 Storage of Metal Windows

11 Handling of Baths

12 General Storage and Stacking of Baths

18 Completed Buildings-Handing Over

1 Use of Permanent Lifts

2 Use of Electrical Wiring

3 Minimum Defects at Final Handover

4 Systematic Clearance of Defects

5 Preliminary Official Inspection

6 Formal Handing Over Inspection

7 Formal Notification to Contractor of Defects from Formal Handing Over Inspection

8 Dilatoriness in Remedying Defects

9 Troublesome 'Snagging' Lists

10 Timely Steps and Pressure to Clear Up the Final Few Defects

11 Clerk of Works Clearance Certificate

12 Reports on Completions

13 Transformer Chambers

14 Maintenance Surveys

15 Recovery of Council Fencing Materials

16 Horizontal Centre Pivot Windows

17 Stopcocks

18 Testing of Gas Installation

19 Cradling Eye Bolts

19 Sub-Contractors

1 Instructions to Sub-Contractors

2 Approval of Sub-Contractors

3 Nominated Sub-Contractors

4 Direct Contractors

5 Direct Supplies

6 Work by Outside Authorities

7 Work by Outside Specialists

8 Labour-Only Sub-Contractor

20 Materials

1 Material Approvals

2 Major Deliveries

3 Sources of Materials

4 Deliveries of Joinery

5 Direct Supply—Procedure

6 Direct Supply—Requisitioning

7 Direct Supply—Deliveries

8 Direct Supply—Quality

9 Direct Supply—Replacement

10 Direct Supply—Delivery Delays

11 Name Plates

12 Standardisation of Direct Supply Materials

13 Damage to Baths

14 Prevention of Impact Damage

15 Pads for Feet of Baths

21 Testing

1 General Policy on Testing

2 Site Testing Equipment

3 Laboratories at County Hall

4 Testing of Mastic Asphalt—Outside Laboratories

5 Forms to Accompany Samples

6 Supervision of Sampling

7 Clerk of Works Records

8 Tests on Site

9 Samples Sent from the Site by Clerks of Works for Tests

10 Testing Schedule

11 Examination of Sand

12 Marine Aggregates

13 Slump Tests

14 Field Weight Tests on Lightweight Screeds

15 General Remarks on Drainage Testing

16 Pile Tests Note

17 General Remarks on Paint Testing

18 Tests on Flues

19 Testing of Bricks

20 Testing of Slates

21 Cement Testing

22 Testing of Reinforcement

22 Industrialised Buildings

1 General

2 Industrialisation

3 Tolerances

4 Making good

5 The Clerk of Works in Future Development

23 Training and the Supply of Technical Information to Clerks of Works

1 Assistants Under Training by Clerks of Works

2 Training by Experience—Clerks of Works—in Course of Duty

3 Study by Clerks of Works—for Personal Qualifications

4 Courses for Clerks of Works Arranged by the Department

5 Initial Issues of Technical Information to Clerks of Works

6 Permanent Issue Set of British Standards for Clerks of Works

7 Permanent Issue Set of Codes of Practice for Clerk of Works

8 Periodical Information

9 Students and Trainee Attachments

10 Suitable Jobs for Students or Trainees

11 Planning Useful Attachments

24 Relations with Other Departments and Branches

1 General Co-Ordination

2 Structural Engineer

3 Housing Engineer

4 Quantity Surveyor

5 District Surveyor

6 Relationships between District Surveyor and Clerk of Works

7 Mutual Confidence Between Clerk of Works and District Surveyor

8 Aesthetic Considerations

9 Environmental Health Officer

10 Electrical and Heating Inspectors

11 Factory Inspector

12 Officers of the Parks Department

25 Clerks of Works Conditions of Service and General Administration

1 Hours of Work

2 Overtime

3 Overtime Claims

4 Attendance Records

5 Temporary Absence Sheets

6 Travel Expenses—Home to Site

7 Incremental Scales

8 Established Positions

9 Superannuation

10 Place of Employment

11 Training

12 Car Allowances

13 Leave

14 Leave on Building Operatives' Holidays

15 Additional Leave for Long Service

16 Special Leave

17 Application for Leave

18 Termination of Engagement

19 Illness

20 Accidents

21 Sick Pay

22 Assessment Boards

23 Loss of Council Money or Property

24 Personal Property

25 Change of Address

26 Correspondence

27 Postage

28 Visitors to the Works

29 Photographs

30 Trade Union Visitors

31 Enquiries for Housing

32 Visits from the Press

33 Examination of Materials in Preparation Off Site

34 Rules for Visits by Clerks of Works to Workshops

35 Issues

36 Use of Official Position

37 Gifts


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© Architectural Press 1983
1st July 1983
Architectural Press
eBook ISBN:

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