1 SCOPE
2 REFERENCES
3 RESPONSIBILITIES
4 GENERAL
5 WORK PROCEDURE
6 SAFETY CONTROL
7 QUALITY CONTROL
8 TOOLS AND EQUIPMENT
9 ATTACHMENT
10 SAFETY ANALYSIS
Hilti HILTI HIT-RE-500V3
FOSROC NITOBOND EP
Detail of Reinforcement.
1. Scope of Work
This method of statement procedure is to provide additional length on existing foundation by extending with new concrete. Reinforcement bars will be embedded as per HILTI procedure (See Attachment 2) and joint between old concrete will be roughened and surface shall be applied with bonding from FOSROC (See Attachment 3) before concrete placement. Curing will be applied as per normal practice. Ensure all requirement meet the SAUDI ARAMCO standards/specifications applies such as casting, fabrication, sampling, DE molding, curing and testing. Follow all the safety regulations of Saudi ARAMCO and to describe the sequence of operation and precautions to be observed to ensure that procedure is applied in a safe & acceptable manner, according to project specifications and requirements.
2. Reference
1) Project Specification
2) Project IFC Drawings
3) Saudi ARAMCO Standards
• SAES-Q-012 – Criteria for Design and Construction of Precast
• SAES-Q-001 – Criteria for Design & Construction of Concrete Structures
• SAES_Q-005 – Concrete Foundation
• SAES-Q-007 — Heavy Machinery
• 09-SAMMS-097 – Ready Mixed Portland Cement Concrete
4) HIL Tl Manufacturer Procedure
5) ACI 347R: Guide to Formwork for Concrete
6) ACI 308: Standard Practice for Curing Concrete
7) ACI 117: Concrete Tolerances
8) Approved Project Safety Plan
9) Approved Project Quality Plan
10) OSHA Regulation
11) FOSROC Bonding Agent Procedure.
3. Responsibility
1) Site Manager
Site manager is entirely responsible for JSA and Risk Assessment and authorized works
related to construction plans and guidelines. He is responsible for the overall direction,
coordination and control of the activities attached and related works prior to commencement of work and implementation of HSE Plan in accordance to Project Specification/Safety
plan and Standards, but he can delegate this activity.
2) Construction Manager
Construction Manager shall be responsible for the overall implementation and monitoring
of all the activities involved. He shall be responsible for safe and productive work culture. He
shall be dealing with construction team for implementing work in correct procedure at site.
3) Safety Manager
Safety Manager of JGC/DEC and GUSAN HSE Supervisor review construction company
formulates policies, procedures and programs on construction safety that
comply with OHSA regulations. He has broad knowledge of local, state and federal
regulations. He should also be familiar with all relevant environmental laws prior to start of the
work and HSE plan must be monitored and abide.
4) QC Manager
QC Manager shall be responsible to ensure that the foundation fabrication and installations of
items are in accordance with the approved Drawings and specification requirements as well as the implementation of quality control procedure. He is Responsible to
review SATIP, SAIC and method statements.
5) Civil Supervisor
Civil supervisor shall directly involve in the planning and execution of the activities in fabrication and installation. He shall ensure the implementation of quality plans and
also responsible Obtaining PTW prior to commencement of work. HSE Plan must be implemented and observed accordingly.
6) QC Inspector
QC Inspector shall be responsible for the necessary inspections and tests to be carried out
for all the activities involving fabrication and installation. QC inspector will coordinate test schedule to relevant technician of Third Party Laboratory as well as
raised RFI to CONTRACTOR/COMPANY for final acceptance.
7) Foreman/Leadman
Foreman shall be responsible for the direct execution on fabrication and installation according to the plan and he will directly control and give instruction to the working personnel. He is responsible for the usage of proper tools/equipment, personal protective equipment’s and housekeeping.
4. General
1) Foundation (Casting, Curing, Stripping, Handling and Storage etc.) shall be in accordance with applicable Specification and Standard.
2) Complies with the dimensional tolerance as note in the drawing & design of specify minimum compressive strength.
3) Foundation is a construction product produced by casting concrete in a Reusable mold or “Form” which is then cured in a controlled environment
5. Work Procedure
1) Rebar Setting
a. All reinforcing bar shall be hot rolled high tensile deformed steel with maximum yield strength not exceeding 422 MPA (60 ksi).
b. Reinforcing bar shall be fusion bonded epoxy coated bar. Manufacture, fabrication, handling and placing of bars shall be as per ACI 318 Chapter 7.
c. Reinforcing bars shall be pre-assembled and placed to avoid contact with soil.
d. Reinforcements shall be free of loose rust, loose mill scale and shall be covered with tarpaulin or polyethylene sheets until required to prevent weather damage.
e. Prior to the installation of reinforcing bars, ensure that all dimension and rebar requirement is intact and all relevant drawings (See Attachment 4) are available.
f . Reinforcing bars are embedded to the concrete as per HILTI vendor recommendation.
g. The drill hole up to specified length of Typical Embedment as prescribe in the above table
and as the allowed range of maximum is shown in the setting details.
h. Clean the bored hole until complete free of dust.
I .Inject Base material HILTI HIT-RE-500V3 INTO THE HOLE.
j. Install the reinforcing bar, ensure that the rebar is completely covered and in contact with
the base material
2) Surface Preparation on Existing Concrete.
a. Surface of the existing foundation shall be roughen until reaching the concrete aggregate is
exposed.
b. Apply approved bonding agent FOSROC NITOBOND EP (See Attached Approved
FOSROC material) on the existing concrete by brush and must be firmly scrubbed into the
surface ensuring an even coating. The new concrete must be applied to Nito Bond EP
standard within 1.5 hours on the 20 degree celcius or 1 hour at 30 degrees celcius.
3) Formworks & Support
a. Formworks shall be prepared in accordance with approved project drawings under the
supervision of a Civil Supervisor.
b. Form oils or forms releasing agents shall be used on the surface of the forms for easy
stripping, prior to the closure of the formworks, reinforcing bars shall be placed and rigidly
fixed and verified to its size and concrete covering is verified.
c. Formworks shall be designed in such a manner that it can be easily dismantled without
causing damage to the concrete surface or disturbing the remaining parts.
d. Formwork shall not be removed or stripped before the concrete has set sufficiently to
withstand safely any loadings and stresses to which the structures may then be subjected. +
5) Placing of Concrete
a. Prior to the commencement of concrete pouring, verify RFI issued by QC Inspection team
indicating scheduled date and time of concrete casting.
b. Ensure that all areas schedule to receive finishes have been inspected and are
acceptable prior to pouring.
c. Concrete shall be batched in a batching plant and shall be transported to site by concrete
transit mixers and will be adjusted accordingly depending on the rate of
discharge to its final deposit. Pump shall be used for pouring concrete.
d. Concrete shall be thoroughly consolidated by concrete vibrator during placement and
thoroughly work around the reinforcement, embedded items and into corner of forms.
e. Concrete shall not be re-vibrated to remove or reduce cracks. Over vibration will cause
segregation, surface laitance or leakage through formwork shall be avoided. Immersion
vibrators shall be withdrawn slowly to prevent the formation of voids.
f. Concrete shall be covered with protective plastic sheet immediately following completion
of casting to prevent premature drying, excessive hot temperature and mechanical
disturbance (placing of anchor bolts/embedded plates on site). Water curing (wet curing)
using burlaps shall be used after consolidation of concrete covered with plasticised vapour
barrier (Polyethylene Sheets)
6) Concrete Curing
a. Curing shall be continuous until compressive strength has reached 70% of the specified
strength, but not less than seven (7) days after placement.
b. Saturated burlaps shall be covered with plasticized vapour barrier and continuously water
sprinkled.
c. Visual inspection of the curing process shall be carried out on a daily basis by QC Inspector. Any deficiency found on the concrete shall be rectified
immediately.
Safety Control
1) HSE Manager and safety supervisor shall carry out the safety site
inspections to ensure that safety requirements laid out in the Safety Management Plan are
followed during the execution of work.
2) Persons involved in miscellaneous precast foundation must be provided with and use the
necessary PPE and as a standard each person shall wear a Safety Helmet and Safety footwear etc.
The requirement for personal protection equipment shall be approved by SAUDI ARAMCO.
a) All personnel will be issued with the following personal Protective equipment and must be
worn at all times.
• Safety helmets
• Safety boots
• Safety Spectacles
• Hand Glove
• Dust Masks
• Ear Defenders
• Wellington Boots
• Cotton coveralls with full sleeves shall be worn on construction site
• Disposable coveralls
3) Confined Space Entry:
a) No one may enter in any deep excavation and enclosed space without specific approval and
a current work permit prior to start of work. The safety equipment, gas test and instruments
are required.
b) No new activity shall be introduced into a confined space without the permission and signed
approval of the permit to work issuing authority.
c) Subcontractors shall not enter or commence work in any deep excavation and enclosed
space, until a valid permit to work has been issued. Where subcontractor operations may
result in a dangerous atmosphere arising during the work activity.
4) All personnel involved in the miscellaneous precast foundation shall have to undergo Safety
training being conducted by HSE Department.
1. Quality Control
1) The QC Inspectors of Client and Contractor Representative shall carry
out the necessary tests and inspections respectively at various stages of miscellaneous
precast foundation work. QC must be present during the test or
inspection shall be based on SATIP / SAIC, QC Plan and Project Specifications this method
statement, or as stated on the latest IFC drawing.
2) All testing shall be in accordance with 09- SAMSS-097 (Ready-Mix Portland Cement
concrete). Test reference & information of Third Party Inspection team shall be submitted for
review and final approval. All relevant material approval intended for this scope of work shall
be submitted separately.
3) All stages of the work shall be inspected by QC and ARAMCO representative. Quantity of Test Mould Sample shall be determined and all materials and
work procedure shall be implemented and verified before the commencement of work.
8. Tools & Equipment
1) All tools and equipment shall be inspected by HSE dept. in accordance with Procedures.
2) All tools and equipment e.g. hand and power tools, slings etc. require special attention and Protection for their use and guidelines for storage.
3) All damaged, unsafe or defective tools will be marked, tagged as Unsafe or with a Red paint and taken away from operation to assure that no one will use such tools on the job.
4) Electrical tool and equipment shall be used in accordance with GFCI requirement.
5) Tools & Equipment
• Concrete Pumps
• Concrete Truck Mixer (Transit)
• Concrete Vibrators
• Air Compressor
• Lighting Fixtures (In anticipation of night pouring)
• Wter Tanker (Trucks)
• Hand tools for concrete workers (Carpenter, Steel fixers, Masons & Labours)
• HIL Tl Tools
• Lifting Equipment (Forklift, Crane, Bobcat, Loader) • Trailer Truck
• Rebar Bender.
9. Attachment
1) Job Safety Analysis.
2) Hilti HILTI HIT-RE-500V3
3) FOSROC NITOBOND EP
4) Detail of Reinforcement.
