acm aluminium composite material Overview of installation work
8. Overview of installation work
(1) General
Installation work accounts for a substantial part of the entire Aluloyal acm aluminium composite material work supposedly, the best installation procedures will be chosen from many aspects including quality, construction period and its cost. In this chapter, we would like to look over the basics of installation procedures of Aluloyal acm aluminium composite material taking a small to medium scale external cladding project as an example.
When we install fabricated panels at project site, we implement the installation work in accordance with the drawings and specifications of the project in the event that we find some discrepancy between drawings and the actual conditions at project site, we have to report to and consult with the project controller.
(2) Installation procedures
General installation work consists of the following procedures:
(3) Comments on each procedure
A. Unloading
Unload Aluloyal panels on the roof on each floor or suitable places on site. The unloaded panels on each floor will be just those required for the relevant floor. Fasten the panels together with rope and a covering sheet for protection.
B. Marking
Confirm the reference line in the presence of a superintendent; mark the installation line, based on the reference line and the approved shop drawing.
C. Substructure work
In order to install the substructure, weld steel bracket pieces onto hole-in anchors (example of bracket: L-50*251 mmt).weld continuous steel angles onto the brackets. All the angles will be finished with rust inhibiting coating, which conforms to the project standard to prevent fire during welding, pay attention to sparks that drop on the cover sheet and veneer. During the substructure work, check the level with a flush thread and plumb-bob line, or water level, if necessary.
D. Rust inhibiting coating
Apply rust inhibiting paint onto all the welded points including the back and edge. The paint and coating thickness must conform to the project standard.
E. Aluloyal work
Make the installation line in accordance with the shop drawing. Fix Aluloyal acm aluminium composite material panel onto the substructure with self-tapping screws, 4mm in diameter, after confirming the position of the panel (left, right, top and bottom), the fixing interval will be normally 300-400mm depending on the strength calculation. After confirming the fixed conditions, peel off the protective film and clean the removed film.
F. Accessories work
Bring the accessories to the scaffold passage, as indicated in the shop drawing. The quantity of accessories brought to the scaffold passage must be kept to a minimum to avoid dropping and other accidents. Lay large accessories diagonally on scaffold passage.
Mark the installation line onto the substructure to meet the position of the window frame, fix the accessory with self-tapping screws, 4mm in diameter, with @=300mm interval after installation, check the installed level and precision. After the check, peel off the protective film, clear the removed film.
G. Joint sealing
Use the sealing materials as specified in the project and apply the joint design (width and height) as instructed from the sealant manufacturer. Typical sealing work includes leaning of the joints, inserting back-up material, applying masking tape applying primer, filling with sealant, tooling with palette knife, removing masking film and curving. As improper sealing work will affect the appearance and the waterproofing performance of the joint, the sealing work must be conducted exactly based on the instructions from sealant manufacturer.
H. Clearing and cleaning
Clear and clean the working area every day after work. Especially, when the work is complete in a zone, clear, clean and transfer the area smoothly to the next location, in order to avoid hindering the next stage. Collect and clean unnecessary remains to the dump point everyday or transport out of the site immediately.
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