Table of Contents
Scope of Work
This Method Statement pertains to the installation of wall, floor and roof sandwich panels.
Definitions
CM: Construction Manager
SE: Site Engineer
CS: Chief Surveyor
ME: Material Engineer
ESHO: Environmental, Safety, and Health Officer
References
Properties: Sandwich Panel
Materials
Sandwich panels
Steel U – Section
Bolts, nuts
Steel angles
Tools & Equipment
Electrical grinder/saw
Welding machines
Loader
Crane
Picks
Hand shovels
Drilling machine
Generator
Keys for fixing nuts and bolts
Safety
Construction Safety Manual
Safety Hazards and Precautions
a) Crane Accidents
All cranes are checked and certified. Operators are professional and experienced. Provide a banksman when operating near excavation. Check load indicator, slings, and wire ropes daily.
b) Falling Objects
Stand clear during lifting operations. Wear hard hats.
c) Equipment & Vehicles
Use safety belts. Slow down and obey speed limits. Provide “back-ups” alarms. Provide a banksman when operating equipment near excavation.
Prior to commencing any activities, the workforce will receive an induction talk on the project site safety requirements.
This induction talk will cover both the safety issues specific to the activity and the general project safety requirements.
ESHO will enforce the project safety requirements. Heat stress training will be provided, along with provisions for adequate cool drinking water, shade, and salt water tablets.
Prior Activities
Prepare and obtain approval for office layout drawings.
After the approval of layout drawings, check that requests for site activities are submitted to the engineer to follow the work on the site.
Procedure
All activities will comply with the Inspection Test Plan reflecting the testing requirements of the contract.
Construction of site offices will be coordinated with the approved program of works.
Roof Sandwich Panels
Before erecting roof sandwich panels, check columns and roof trusses for plumb and compliance with approved drawings.
Use a crane to lift the sandwich panels (11.05m length x 1.00m wide x 50mm thick) to the top of the roof, using belts.
Screw the ends of the sandwich panels, centered over the roof trusses, in place with 5” long hexagonal screws, using a self-screw drilling machine.
Use a minimum of 4 screws at each line of purlins.
After fixing the hexagonal screws, cap the top of the screw.
Wall Sandwich Panels
Fix a horizontal galvanized iron track to the floor between the column posts to receive the wall panels.
Erect the wall sandwich panels (1.00m wide x 50mm thick x 3.025m high) one by one, starting from one end. Secure the first panel in place by screwing it to the column with 5” long hexagonal head screws. Lock each vertical wall panel with the other by a “tongue and groove” joint.
After all panels are erected, place a horizontal galvanized iron track on top of the panels. After checking the wall for plumb, weld the track at its ends to the column posts.
Use a minimum of 4 screws for each panel.
After fixing the hexagonal screws, cap the top of the screw.
Method Statement for Erecting Sandwich Panels: Floor Location
There are three primary ways to apply floor antifreeze to a cold storage floor: the ventilation pipe type, the airborne layer type, and the floor heating type. This keeps the floor from freezing. By burying ventilation pipes in the cold storage floor, the ventilation pipe type is a design scheme for mechanical or natural ventilation.
By passing air through the ventilation pipes, the cooling energy from the floor is dissipated. Cleaner conditions in the warehouse can be guaranteed by this scheme. In addition to guaranteeing the food’s safety and hygiene in the warehouse, the design of the platform foundation pit, loading and unloading area, and easy operation and maintenance of the cold storage that follows are all made possible by this structure.
There are two approaches to the overhead layer scheme: high overhead and low overhead. In order for the cold energy released by the ground level to be dissipated through the air in the overhead layer and stop creating soil beneath the ground, both employ an air space to separate the cold storage foundation from the ground level.
The benefit of frozen food is that it is entirely anti-freeze; nevertheless, the drawbacks include its intricate structure, which makes logistics operations difficult, and its ease of hiding dirt, which compromises food cleanliness in the warehouse.
In order to prevent the foundation soil from freezing, the floor heating scheme involves laying a variety of heat sources in the base layer of the cold storage floor insulation layer, such as oil pipes and electric heating wires.
The aforementioned technique for creating a cold storage foundation involves covering the original ground with a layer of gas barrier and waterproof material. The thermal insulation layer is laid after the waterproof layer.
In order to replicate the poured concrete surface layer—which is the typical construction scheme for cold storage floor insulation—the thermal insulation layer is often laid with three to five layers of XTS, each layer having a 50 mm thickness.
Responsibilities
The Contractor’s Site Manager must ensure all necessary safety and protective equipment are provided, along with properly trained and qualified personnel.
The Site Supervisor is responsible for organizing the work in a safe manner, ensuring proper utilization of safety and protective equipment. The Site Supervisor must also ensure that the method statement procedure is followed and observe the hold-points, notifying the Consultant for inspection.
Workers must properly wear the provided protective equipment, obey safety rules, and perform the work as described in the method statement procedure.
The Site Engineer will ensure that site preparation activities are conducted according to the approved method statement.
The Material Engineer will ensure that the materials being used comply with the project specifications and the approved method statement.
Written by:
Jose S. Villegas is a seasoned professional and civil engineer in the construction industry with over 24 years of experience. He has worked on various construction projects ranging from small to large-scale projects. He has a deep understanding of the construction process, from quality to implementation and completion.
