Handbook for Clerks of Works

Handbook for Clerks of Works

Greater London Council Department of Architecture and Civic Design

3rd Edition - July 1, 1983

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  • Author: Greater London Council
  • eBook ISBN: 9781483102344

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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

Product details

  • No. of pages: 144
  • Language: English
  • Copyright: © Architectural Press 1983
  • Published: July 1, 1983
  • Imprint: Architectural Press
  • eBook ISBN: 9781483102344

About the Author

Greater London Council

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  • DawieJanse R. Tue Jan 15 2019

    Handbook for Clerk of Works

    Handbook for Clerk of Works