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Disclaimer

This publication is prepared by the Construction

Enquiries

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Guidelines on Safety of Tower Cranes

Publication No. 1

Guidelines on Safety of Tower Cranes

A. Purpose

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C. Introduction

For the avoidance of doubt, notwithstanding such intention, this publication is issued by CIC for reference by industry stakeholders only and will not constitute professional advice on tower crane operations or any other issues. The parties using this publication should therefore seek appropriate advice from their professional advisers. CIC (including its members and employees) will NOT accept responsibilities for any consequences resulting from the use of or failure to use this publication.

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Guidelines on Safety of Tower Cranes

D. Measures for Enhancing Safety of Tower Cranes

E. Checking before Erection of Tower Cranes

(i) Pre-delivery checking

(ii) Checking of anchorage

(iii) Checking of supporting structure

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(iv) Derrick crane

F. Improvements of Site Supervision

(i) Appointment of supervising engineer

and

(ii) Risk Assessment

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Guidelines on Safety of Tower Cranes

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(iii) Pre-installation checking

(iv) Pre-operation checking

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Guidelines on Safety of Tower Cranes

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I. Summary of Recommendations

1

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Procedures for Pre-Delivery Checking

Purpose

Engagement of CME

Provision of Documents by the Owner

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Guidelines on Safety of Tower Cranes

Non-destructive Tests

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1. Particulars of Tower Crane

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Guidelines on Safety of Tower Cranes

Tie bar Tie bar Tie bar

1 2 3 6

Tower mast sections

Jib Trolley

E F F F F

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Item Main components QtyOwner’s Manufacturer’s

codeMain dimensions Year Remarks

1 Q200

2

/ chassis

3 Tower mast sections 1 M1

1 M6 Base section,

1 M1

1 T1 A202

6 1 C1 12m

Jib

1

Type F

1 Type E 2 tonnes each

1

1 Trolley

10 1 H1

11 Trolley 1 T1

12 1 TC1

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Guidelines on Safety of Tower Cranes

THOROUGH EXAMINATION OF CRITICAL PARTS

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Section Description Page

Introduction

CONTENTS

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Guidelines on Safety of Tower Cranes

1. INTRODUCTION

3. VISUAL EXAMINATION

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Critical parts Acceptance criteria Condition acceptable

Yes No Remarks

3.1 Main structural parts

_________________

_________________

_________________

_________________

(c) Tower mast sections

_________________

_________________

_________________

_________________

_________________

_________________

_________________

_________________

_________________

_________________

_________________

_________________

_________________

_________________

_________________

_________________

_________________

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Guidelines on Safety of Tower Cranes

Critical parts Acceptance criteria Condition acceptable

Yes No Remarks

3.2 Accessories

_________________

_________________

_________________

_________________

_________________

_________________

_________________

_________________

_________________

_________________

_________________

_________________

_________________

_________________

_________________

_________________

_________________

_________________

_________________

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4. DIMENSIONAL EXAMINATION

Critical parts Acceptance criteria Condition acceptable

Yes No Remarks

(a) Mast section connections

_________________

_________________

(b) Jib section connections

_________________

_________________

(c) Tie bar connections

_________________

_________________

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Guidelines on Safety of Tower Cranes

The repair and maintenance record prepared by the tower crane owner should include

Critical parts Acceptance criteria Condition acceptable

Yes No Remarks

_________________

(b) Motors

_________________

_________________

_________________

_________________

_________________

_________________

_________________

_________________

_________________

_________________

_________________

_________________

_________________

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6. SUMMARY OF FINDINGS

The critical parts listed below are not in acceptable condition, and are required

Critical part Details of non-conformance

(a) _____________ _________________________________________

(b) _____________ _________________________________________

(c) _____________ _________________________________________

6.2 Maintenance logbook

is not

Critical part

(a) ___________________________________________

(b) ___________________________________________

(c) ___________________________________________

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Guidelines on Safety of Tower Cranes

6.3 Non-destructive test reports

(a) Bolts and pins

Yes

__________________________________________________

Yes

__________________________________________________

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Report for Risk Assessment

Purpose

Overview

(A) Introduction

(B) Hazard assessment

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Guidelines on Safety of Tower Cranes

(C) Method statement

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(D) Personal particulars of crew members

(E) Manufacturer’s Manual

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Possibility(P)

Mild(1) Residual

Public(P)Action

May be Possible(3) P*C

Asset(A)

Impossible(1)

Required

SAMPLE

tower crane

3 12

Mechanic

mast to tower crane

to mast)

3 12

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Guidelines on Safety of Tower Cranes

3 12

3 12

3 12

arrest strips

3 12

stripst

3 12

3 12 Foreman

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equipment (PPE)

3 12

3 3

materials and to choose a suitable and

materials suitably and less than 2 metres

6(3x3) Foreman

3 12

3 12

weather report) when wind speed exceeds

3 12

suitable control rope and monitor the use

Possibility(P)

Mild(1) Residual

Public(P)Action

May be Possible(3) P*C

Asset(A)

Impossible(1)

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Guidelines on Safety of Tower Cranes

(2) Commencing works procedure

3 12

properly, and then hammer the 3 12

3 12

To install two mono-rails at the 3 12

3 12

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3 12

3 12

3 12

Possibility(P)

Mild(1) Residual

Public(P)Action

May be Possible(3) P*C

Asset(A)

Impossible(1)

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Guidelines on Safety of Tower Cranes

3 12

3 12

them in the correct position and to start

tower crane to hoist mono-rail to

3 12

3 12

the mast, and then hammer out

3 12

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chassis and dismantle the telescopic 3 12

them in the correct position and to start

appropriate positions and hammer

3 12

3 12

Possibility(P)

Mild(1) Residual

Public(P)Action

May be Possible(3) P*C

Asset(A)

Impossible(1)

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Guidelines on Safety of Tower Cranes

3 12

3 12

the site to carry out the tests and

3 12

3 12

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(3) Completion of works

procedure

not properly put away, and a tower crane is

3 12

(4) Emergency

3 12

there is the need to send casualties to

Possibility(P)

Mild(1) Residual

Public(P)Action

May be Possible(3) P*C

Asset(A)

Impossible(1)

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Guidelines on Safety of Tower Cranes

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Guidelines on Safety of Tower Cranes

1A

1B

1C

1E

1F

2

3 60000 mm

2130 mm

6

mast 6000 mm

mast 6000 mm

mast 6000 mm

10 mast 6000 mm

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Sample Method Statement for Dismantling of Tower Crane

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Sample Layout Plan

Tower crane

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Guidelines on Safety of Tower Cranes

Important Points

Hand tools must be tied to the appropriate

position with a rope

Sample Tower Crane Dismantling Procedures

Basement

Hydraulic 2 m

10 m

For the purpose

not dismantle

ballast

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Important Points

maintained with the tower crane

wire rope

the tower craneHand tools must be tied to the appropriate

position with a rope

Sample Tower Crane Dismantling Procedures

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Basement

Hydraulic

Control rope

21 m

Sample Tower Crane Dismantling Procedures

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Important Points

Hand tools must be tied to the appropriate

position with a rope

so as to maintain a correct central

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Guidelines on Safety of Tower Cranes

Important Points

Hand tools must be tied to the appropriate

position with a rope

Sample Tower Crane Dismantling Procedures

10 m

Basement

Hydraulic21 m

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Sample Tower Crane Dismantling Procedures

11 m

Basement

Control

rope Control

rope

Hydraulic21 m

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Guidelines on Safety of Tower Cranes

Important Points

Hand tools must be tied to the appropriate

position with a rope

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Important Points

Hand tools must be tied to the appropriate

position with a rope

Sample Tower Crane Dismantling Procedures

Basement

Hydraulic

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Guidelines on Safety of Tower Cranes

Important Points

Hand tools must be tied to the appropriate

position with a rope

Sample Tower Crane Dismantling Procedures

Basement

Hydraulic

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Important Points

operate the oxy-acetylene torch

Fire/explosion

Sample Tower Crane Dismantling Procedures

End

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Guidelines on Safety of Tower Cranes

PostContact

Telephone

Competent

Person

Up on the

tower crane

Sample Appointment Letter of Competent Persons

of Tower Crane Dismantling

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Crane

Experience

Junior

Junior

Post

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Crane

Junior

Post

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of Site Personnel Engaged in Tower Crane Operations

Competent Person

(A) Role

(C) Experience

(D) Training

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(E) Competencies

Senior workman

(B) Experience

(C) Training

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(B) Training

(C) Supervision

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Guidelines on Safety of Tower Cranes

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Summary of Recommended Improvement Measures

(i) Tower crane owners

publication

(ii) Tower crane owners

Principal Contractors publication

(iii)

structure

Tower crane owners

Principal Contractors publication

E Checking before Erection of Tower Crane

F Improvement of site supervision

(i) Principal Contractors

publication

(ii)

method statement

Principal Contractors Already

implemented

(iii) Principal contractors

publication

Principal contractors

publication

Principal contractors Already

implemented

G

contractors

Principal contractors

publication

H

of competent persons

and workmen

Principal contractors Already

implemented1

Section and

subsection

in main Improvement Measures Implementing parties

Implementation

timeframe