METHOD OF STATEMENT
TITTLE:
METHOD FOR
WINDSOR PROBE TEST
TO DETERMINE
CONCRETE STRENGTH
DCN No.
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DATE
REFF No.
DATE
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CTDSB/JKR/UCKLIA/008/MS/00
15/10/2023
ISSUE
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TOTAL PAGE No.
AFFECTED PAGE
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Important
The information contained herein are the proprietary property of Cekal Tulin Development Sdn.
Bhd. It’s shall not be reproduced, copied, revealed, published,distributed in whole or partly
without authorization.
Contents
1.
INTRODUCTION ........................................................................................................................... 2
2.
OBJECTIVE ................................................................................................................................... 2
3.
LOCATION ................................................................................................................................... 2
4.
REFERENCE USED ........................................................................................................................ 2
5.
RESPONSIBLE PERSON ................................................................................................................ 2
6.
RESOURCES ................................................................................................................................. 3
6.1.
EQUIPMENTS REQUIREMENT ..................................................................................................... 3
6.2.
MANPOWER REQUIREMENT ...................................................................................................... 3
7.
TESTING PROCEDURE.................................................................................................................. 3
8.
QA/QC ASPECT ............................................................................................................................ 4
9.
SAFETY AND HEALTH ASPECTS.................................................................................................... 4
9.1
SAFETY FEATURES ....................................................................................................................... 4
9.2
SAFETY PLAN ............................................................................................................................... 5
METHOD OF STATEMENT
TITTLE:
METHOD FOR
WINDSOR PROBE TEST
TO DETERMINE
CONCRETE STRENGTH
REFF No.
DATE
PAGE
CTDSB/JKR/UCKLIA/008/MS/00
15/10/2023
ISSUE
00
1. INTRODUCTION
The Windsor HP Probe system rapidly and accurately determines the concrete compressive strength of a
structure by driving a probe into the concrete with a known amount of force. It is non-destructive and can
be used with equal effectiveness on fresh and mature concrete. Equally accurate results are obtained on
horizontal or vertical surfaces provided that the probe is perpendicular or at right angles to the test
surface.
2. OBJECTIVE
This work method statement is to measure the compressive strength of concrete accurately and
effectively, on-site in the field by Windsor HP Probe System and the sequence of works if failure occurred
during the determination of compression test on concrete cubes.
3. LOCATION
Reinforced concrete structures for ground slab for Mainline Culvert (ML) 24,25,26,27 & Culvert Access
(CA) 32
4. REFERENCE USED
MS 26: Part 3: Section 7: 1992 / BS 1881:20 / ASTM C803-90
5. RESPONSIBLE PERSON
1.1 Project Manager
2.1 Construction Manager
3.1 Site Engineer
4.1 QAQC Engineer
5.1 Safety & Health Officer
6.1 Lab Technician
7.1 Site Supervisor
METHOD OF STATEMENT
TITTLE:
METHOD FOR
WINDSOR PROBE TEST
TO DETERMINE
CONCRETE STRENGTH
REFF No.
DATE
PAGE
CTDSB/JKR/UCKLIA/008/MS/00
15/10/2023
ISSUE
00
6. RESOURCES
6.1. EQUIPMENTS REQUIREMENT
•
The Windsor HP Probe system (powder-actuated gun or driver, hardened alloy steel
probes, loaded cartridges, a depth gauge for measuring the penetration of probes).
•
Tools
6.2. MANPOWER REQUIREMENT
•
Lab Technician
•
QAQC Engineer
•
Site Engineer
•
Supervisor
•
Safety Officer
7. TESTING PROCEDURE
•
The concrete to be probed must have reached a sufficient degree of resistance to penetration.
(Not more than one half the thickness of the concrete).
•
No probe shall be located less than 178mm from any other probe, nor less than 102mm from
the edge of a concrete surface.
•
The surface should be reasonable smooth. Surfaces coarser than a broom finish shall be stoned or
ground over an area larger than that covered by the positioning device and measuring base plate to be
used.
•
Place the positioning device on the surface of concrete at the position to be probed. Mount a probe in
the driver unit, position the driver and probe in the positioning device, and fire the probe into the
concrete, following the direction supplied the apparatus.
•
Remove the positioning device and test the probe for firmness of embedment. Reject any probe that is
not firmly embedded.
•
Place the measuring base plate over the probe and position it firmly on the surface of the concrete to
prevent from other movement and without rocking.
•
If the surface of the concrete has been raised around the base of the probe, the crushed concrete may
have to be removed to allow the reference plate to lie flat.
METHOD OF STATEMENT
TITTLE:
METHOD FOR
WINDSOR PROBE TEST
TO DETERMINE
CONCRETE STRENGTH
•
REFF No.
DATE
PAGE
CTDSB/JKR/UCKLIA/008/MS/00
15/10/2023
ISSUE
00
Install the probe measuring cap and the plate retainer as appropriate, and measure the distance from
the reference plate to the end of the probe or to the reference plate to the end of the probe or the
upper surface of the measuring cap, to the nearest 0.5mm. If the probe is slanted with respect to the
surface of the concrete, make four measurements equally spaced around the parallel to the probe and
average to get the measurement.
•
The measured average value of exposed probe length may then be used to estimate the compressive
strength of concrete by means of appropriate correlation data.
•
Windsor probe test system has published tables relating the exposed length of the probe with the
compressive strength of the concrete. For each exposed length value, different values for compressive
strength are given, depending on the hardness of the aggregate as measured by the Mohs' scale of
hardness.
8. QA/QC ASPECT
The purpose of the quality control is to provide a guideline for a proper operation framework such that
the following targets will be attained: •
To achieve consistently high-quality standards of workmanship in all aspects of the work.
•
All quality matters shall follows as per MS ISO 9001: 2000 and Project Quality Plan to ensure
the quality in construction.
9. SAFETY AND HEALTH ASPECTS
All equipment are to be checked at the beginning of work to ensure that it is well functioning and safe
to be operated by competent operator.
9.1 SAFETY FEATURES
All supervisors and general workers are to wear safety goggle, safety helmet, safety jacket,
mask and safety boots when entering to site. Safety belt/harness will be used if work at high
place.
METHOD OF STATEMENT
TITTLE:
METHOD FOR
WINDSOR PROBE TEST TO
DETERMINE
CONCRETE STRENGTH
REFF No.
DATE
PAGE
CTDSB/JKR/UCKLIA/008/MS/00
15/10/2023
ISSUE
00
9.2 SAFETY PLAN
•
Site personnel and workers are compulsory to attend Safety Induction Training
conducted by Safety Department
•
Safety helmets and safety footwear should be worn. Working sites are often very wet
and the use of rubber boots is essential.
•
The site shall be kept clear of unnecessary obstruction First aid boxes in the charge of
a responsible person have to be kept on all sites.
•
If the entrance to a site crosses a public road or footpath this should be kept clear of
obstructions, mud and spoil.
HIRARC