integrity test report of foundation piles

TCSL6920 Visit 01 of 17

INTEGRITY TEST REPORT

OF FOUNDATION PILES for Franki Foundations

REPORT: TCSL – 6920. Visit 01

C/o Bouygues Bedford Riverside

Bedford MK40 1PY

ervices

imited

esting &

onsultancy T

C

S

L

126A High Street Old Woking Surrey GU22 9JN Telephone: 01483 750074

Fax: 01483 751995 TESTING

1303


REPORT CONTENTS

REPORT TITLE …………………………………………….. Page 1

REPORT CONTENTS ………………………………………. Page 2

SITE DETAILS ………………………………………………. Page 3

INTRODUCTION / MEASURING TECHNIQUE ………… Page 4

TESTING REQUIREMENT …………………………………. Page 4

TEST LOCATION ……………………………………………. Page 4

CONCLUSION OF RESULTS ………………………………. Page 4

APPENDIX 1 ……SITE FIELD REPORT No. of pages 2

APPENDIX 2 ……RECORDED SIGNAL TRACES No. of pages 9


CLIENT:

Franki Foundations Wangfield Nurseries

Wangfield Lane

Curdridge

Southampton

SITE ADDRESS :

C/o Bouygues

Bedford Riverside

Bedford

MK40 1PY

DATE OF TESTING:

August 24th

, 2015

TESTING

PERFORMED BY:

MACHINE SERIAL

No:

Ashley Kirsch

TECO 217

Report TCSL. – 6920 Visit 01


INTRODUCTION

On August 24th, 2015 Testing and Consultancy Services Ltd on behalf of Franki Foundations,

carried out low strain Sonic Integrity Testing on a number of 600 - 900mm nominal diameter

continuous flight auger (CFA) concrete filled piles.

Sonic Integrity Testing is a quick inspection method for detecting any major defects within the

material of the installed pile shafts.

MEASURING TECHNIQUE

Each integrity test is carried out by placing a small accelerometer on the concrete at the head of

each pile, whilst striking the top with a small nylon hammer a shock wave is produced traveling

through the pile with the velocity of sound in concrete, which is approximately 4000m/s within cast

in-situ piles.

At the pile toe or at any major anomaly within the pile shaft the shock wave is reflected and

returned to the pile head, and the placed accelerometer registers the response of the pile element in

a recorded reflectogram. This reflectogram contains the information, from which the integrity of the

pile can be assessed.

Processing techniques used by the equipment guarantee high quality signals.

The result of the measurement is to give an interpretation of the integrity of the pile. Not to

determine with great accuracy the length of the pile, nor to tell anything regarding their

compressive load bearing capabilities.

TESTING REQUIREMENT

The contract specified that 100% of the installed working piles be sonic integrity tested.

TEST PREPARATION

All piles were tested at their final design level, after having received a satisfactory standard of head

preparation.

TEST LOCATION

The piles tested have been installed to assist with part of the foundation bases and associated

groundworks for a proposed hotel and cinema development, currently under construction at

Bedford Riverside, Bedford.

CONCLUSION OF RESULTS

The interpretation of the recorded test traces indicate that of the 33 piles tested no major defects

have occurred within the material of the pile shafts during their construction, therefore, the piles are

considered to be of a reliable integrity throughout their length with no significant changes in cross-

sectional area.

Date Reported: August 27th

, 2015

Checked By: ……………………

Barry Shirley

Operations Manager


APPENDIX 1

SITE FIELD REPORT


SONIC INTEGRITY TESTING REPORT

Building Site: C/o Bouygues, Bedford Riverside, Bedford, MK40 1PY.

Number of piles: 33

Cinema


Hotel


APPENDIX 2

RECORDED SIGNAL TRACES


Cinema


Hotel

integrity test report of foundation piles

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