Views: 1 Author: Site Editor Publish Time: 2023-07-13 Origin: Site
Health & Safety Hazards
Before commencing any the installation of Formwork/Shuttering, the team shall strictly follow as per Client’s Health Safety & Environment recommendations for handling and use of the materials and make sure that all involved working team shall be aware of the same.
The general health and safety guidelines are given as follows:
Make sure the work area is well tidy, safe & clean.
All workers shall follow safe working practices.
Recommended Safety Equipment:
Safety helmet, Safety shoes, Coveralls, Gloves, Goggles, and Face mask as applicable
While working at a height, the proper and safe safety harness shall be used and secured whilst working-extra care shall be taken whilst using tools at a height level to prevent dropping and or falling.
Make sure proper lighting is available during the night shift.
Report all accidents immediately no matter how small to the safety officer on duty.
Make sure that any electrical isolation permit is received if needed
Formwork Design Requirements
The construction drawings indicate the structure’s dimensions.
During or after the concrete pour, the formwork must remain stable (both vertically and laterally).
Surface finishing should conform to the type required. Concrete formwork or shuttering should allow for appropriate placement and vibration.
Formwork must be well-tight to prevent mortar loss and concrete surface deformation.
In multi-story structures, the formwork must withstand the pressure of wet concrete, dead and live loads, and re-shoring loads during concrete placement.
All embedded items must be supported solidly and inaccurate positions according to construction drawings.
Shutter Ties
Formwork/shuttering will be tied at intervals that will not allow it to move or deform beyond the pre-set or specified tolerance limits.
Forms for small section elements, such as columns, and others should be tied and fixed externally.
Through-ties must be used for large-area forms.
Coating
Concrete forms must be cleaned appropriately and any external material or contamination removed before concreting.
The formwork shall be provided with proper openings so that external materials can be removed if needed.
Concrete forms will be coated with the recommended and approved release agent before the formwork is installed.
The properties and coating procedure must be following project specifications.
Propping and Shoring
Propping and shoring requirements shall be submitted to the main client and or consultant for approval accordingly.
Procedure
All formwork tasks will be carried out according to the specifications during reinforced concrete construction.
If necessary, the Project Engineer will consult the Structural Engineer regarding the size, type, and the number of formwork to be used following the structural drawings. The number of repetitions will be set by the program.
For specific systems, external designers may be needed.
Formwork availability will be checked with the procurement department and a decision will be made on whether to buy, hire, or repurpose formwork.
During the fabrication of shutters, all dimensions should be cross-checked to avoid having to make corrections during the erection process.
Make sure that the props, shores, waling, bearers, clamps, and tie rods are the right size and at the right spacing. The Formwork designer shall check the falsework system concerning the loads imposed on it and design parameters, as specified in the specifications.
Make sure the concrete form is securely braced and on a stable foundation during construction.
It is essential to firmly fix forms to previously cast concrete to prevent grout loss. The seal can be developed and made by using cellular foam plastic strips firmly.
Inspect the quality of the shutter lining, the tightness of bolts and wedges, and the embedded items and inserts.
The tie-rod holes in the concrete formwork should be neat so they can later be patched or plugged.
It will be vital to pay attention to the rigidity of the stop ends and the line of the joint formers.