Formwork Structure & Concreting - Flowchart & Checklist_final.pdf
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Formwork Structure & Concreting Flowchart & Checklist
Formwork Structure & Concreting Flowchart & Checklist 1.
Purpose
This procedure concerns the safe installation of formwork structures which have been designed for the construction of reinforced concrete elements on site. A flowchart indicating the review process for the installation of the formwork structure and a standard checklist are included. 2.
Application
The flowchart and checklist shall be used for every formwork structure on site.
The checklist shall be customised where applicable for the particular type of formwork structure, construction method and sequence to be adopted. 3.
References
SS 580:2012 Code of Practice for Formwork WSH (Construction) Regulations
Ministry of Manpower – Circular on Safety Requirements for Formwork Structures. Circular No. OSHD/OSHI/MI046. 31 January 2013 Ministry of Manpower – Advisory for Professional Engineers on formwork safety. 18 January 2014 4.
Responsibilities
The Main Contractor Project Director/Senior Project Manager/Project Manager shall oversee the process to ensure that all parties entrusted with responsibilities related to the installation of formwork structures carry out their duties in accordance with this procedure. Completed checklists are to be submitted to the QP(S)/RE/RTO prior to concrete pouring and filed for record. 5.
Attachments
Flowchart for Formwork Structure & Concreting
Standard Formwork Structure Inspection Checklist
2
Flowchart for Formwork Structure & Concrete Pouring Contractor submits Method Statement & Risk Assessment
Contractor submits PE endorsed design calculations & drawings
QP(S) review
QP(S) reviews PE submission (Min. FoS =2.0) NO
Accepted?
Accepted?
YES
YES
NO
Formwork structure materials delivered to site Contractor PM/CM, Formwork supervisor, assigned responsible party to inspect Remove formwork structure material from site
NO
Accepted?
YES
Formwork structure installed by appointed Formwork Supervisor and trained & certified Scaffold Erectors Site adjustments made NO
NO
Redesign required?
Installation of reinforcement
PE Inspection
Accepted? YES
PE issues COS for inspected formwork structure Contractor submits COS and Formwork Structure checklist attachments to QP(S)
Concrete pour take place. Formwork Supervisor checks formwork structure during concreting End
NO
Leak present or formwork deformation? YES PE assess safe to enter? NO
YES
Concreting stop for minor repairs & adjustment under PE supervision
No entry to carry out repairs allowed.
YES
PE to advise on whether safe & advisable to continue concrete pouring NO
Concrete pouring stops. PE & QP(D) to advise on follow up action (concrete to be washed out?)
3
Formwork Structure Checklist
TO BE COMPLETED & SUBMITTED PRIOR TO CONCRETE POUR Formwork Structure Location: ___________________________________________ S/N 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19
Formwork Safety Check Formwork structure including bracing and coupling designed by PE with minimum Factor of Safety of 2.0? Design reviewed by QP(S)? Method statement and risk assessment reviewed and accepted by QP(S)? Formwork Supervisor appointed and qualified? Scaffold erectors trained and certified? PE certification of lifting points for column boxes? (Where applicable) Formwork & falsework materials in good condition and free from corrosion? Formwork structure built to PE design? Any deviation of formwork structure from PE design? (if yes, PE to provide assessment report to certify performance, in addition to COS) Formwork Supervisor’s inspection checklist duly completed and signed off? (attach to this checklist) Is seating of formwork structure firm and stable? Are edges & joints between formworks adequately sealed? Are working platforms & access provided? Are edge protection and fall protection provided? Are openings securely covered? Is ‘Certificate for Safe Use’ (COS) for formwork structure issued by PE? Is Location plans & photos of inspected structure submitted with COS? Are barricades and warning signs provided to prevent access below formwork during concrete pouring? Is communication provided between Formwork Supervisor & workers during concreting pouring? (other items) -----
Yes/No
Action Required/Remark
Inspected by: ___________________________ (Formwork Supervisor)
Signature: ________________
Date: ______________
Approved by: ___________________________ (Construction Manager)
Signature: ________________
Date: ______________
Reviewed by: ___________________________ (Engineer-in-charge) Received by: ___________________________ (QP(S)/RE/RTO)
Signature: ________________
Signature: ________________
Date: ______________ Date: ______________
This checklist is for facilitating the checking of the formwork structure. It does not exempt the occupier, PE and Formwork Supervisor form their legal responsibilities.
4
Formwork Structure & Concreting Flowchart & Checklist 1.
Purpose
This procedure concerns the safe installation of formwork structures which have been designed for the construction of reinforced concrete elements on site. A flowchart indicating the review process for the installation of the formwork structure and a standard checklist are included. 2.
Application
The flowchart and checklist shall be used for every formwork structure on site.
The checklist shall be customised where applicable for the particular type of formwork structure, construction method and sequence to be adopted. 3.
References
SS 580:2012 Code of Practice for Formwork WSH (Construction) Regulations
Ministry of Manpower – Circular on Safety Requirements for Formwork Structures. Circular No. OSHD/OSHI/MI046. 31 January 2013 Ministry of Manpower – Advisory for Professional Engineers on formwork safety. 18 January 2014 4.
Responsibilities
The Main Contractor Project Director/Senior Project Manager/Project Manager shall oversee the process to ensure that all parties entrusted with responsibilities related to the installation of formwork structures carry out their duties in accordance with this procedure. Completed checklists are to be submitted to the QP(S)/RE/RTO prior to concrete pouring and filed for record. 5.
Attachments
Flowchart for Formwork Structure & Concreting
Standard Formwork Structure Inspection Checklist
2
Flowchart for Formwork Structure & Concrete Pouring Contractor submits Method Statement & Risk Assessment
Contractor submits PE endorsed design calculations & drawings
QP(S) review
QP(S) reviews PE submission (Min. FoS =2.0) NO
Accepted?
Accepted?
YES
YES
NO
Formwork structure materials delivered to site Contractor PM/CM, Formwork supervisor, assigned responsible party to inspect Remove formwork structure material from site
NO
Accepted?
YES
Formwork structure installed by appointed Formwork Supervisor and trained & certified Scaffold Erectors Site adjustments made NO
NO
Redesign required?
Installation of reinforcement
PE Inspection
Accepted? YES
PE issues COS for inspected formwork structure Contractor submits COS and Formwork Structure checklist attachments to QP(S)
Concrete pour take place. Formwork Supervisor checks formwork structure during concreting End
NO
Leak present or formwork deformation? YES PE assess safe to enter? NO
YES
Concreting stop for minor repairs & adjustment under PE supervision
No entry to carry out repairs allowed.
YES
PE to advise on whether safe & advisable to continue concrete pouring NO
Concrete pouring stops. PE & QP(D) to advise on follow up action (concrete to be washed out?)
3
Formwork Structure Checklist
TO BE COMPLETED & SUBMITTED PRIOR TO CONCRETE POUR Formwork Structure Location: ___________________________________________ S/N 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19
Formwork Safety Check Formwork structure including bracing and coupling designed by PE with minimum Factor of Safety of 2.0? Design reviewed by QP(S)? Method statement and risk assessment reviewed and accepted by QP(S)? Formwork Supervisor appointed and qualified? Scaffold erectors trained and certified? PE certification of lifting points for column boxes? (Where applicable) Formwork & falsework materials in good condition and free from corrosion? Formwork structure built to PE design? Any deviation of formwork structure from PE design? (if yes, PE to provide assessment report to certify performance, in addition to COS) Formwork Supervisor’s inspection checklist duly completed and signed off? (attach to this checklist) Is seating of formwork structure firm and stable? Are edges & joints between formworks adequately sealed? Are working platforms & access provided? Are edge protection and fall protection provided? Are openings securely covered? Is ‘Certificate for Safe Use’ (COS) for formwork structure issued by PE? Is Location plans & photos of inspected structure submitted with COS? Are barricades and warning signs provided to prevent access below formwork during concrete pouring? Is communication provided between Formwork Supervisor & workers during concreting pouring? (other items) -----
Yes/No
Action Required/Remark
Inspected by: ___________________________ (Formwork Supervisor)
Signature: ________________
Date: ______________
Approved by: ___________________________ (Construction Manager)
Signature: ________________
Date: ______________
Reviewed by: ___________________________ (Engineer-in-charge) Received by: ___________________________ (QP(S)/RE/RTO)
Signature: ________________
Signature: ________________
Date: ______________ Date: ______________
This checklist is for facilitating the checking of the formwork structure. It does not exempt the occupier, PE and Formwork Supervisor form their legal responsibilities.
4
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