Assembly Guide
Premium Frame Kit

Check the level of the foundation or base with a spirit level. The surface must be flat to a maximum tolerance of ±5 mm along the entire length of the structure. Mark the exact corners of the structure with chalk or spray paint, following the dimensions in the technical sheet.

Make sure the area is clean, with no loose gravel or unevenness that could distort the base frame.

Unpack the kit on a clean surface and organise the parts by category: horizontal beams, vertical beams (columns), ISO corner castings, bolts and nuts, roof accessories. Tick off each category against the packing list included in the package.

Position the base's longitudinal beams on the foundation according to the markings. Connect them with the ISO corner castings, inserting the bolts without final tightening (leave play for adjustment).

Check the base diagonal: 670.5 cm (6705 mm) — the two diagonals must be equal. Adjust the positions before tightening. Then fit the steel floor cross members, insert the bolts without final tightening, re-check the diagonal, then tighten the cross members progressively, from the ends towards the middle.

Fitting the corrugated floor sheet — two options:

1. Assemble the module's lower base.
2. Check the base diagonal: 670.5 cm (6705 mm).
3. Fit the steel floor cross members.
4. Insert the bolts into the cross members, without final tightening.
5. Re-check the diagonal: 670.5 cm.
6. Tighten the cross members progressively, from the ends towards the middle.
7. Lift the base in a controlled way, from two points, as parallel as possible, so you don't twist the frame.
8. After lifting, re-check the diagonal.
9. Fix the corrugated sheet to the underside of the base (this can be done in two lifts — one side, then the opposite side).

1. Assemble the lower base face-down, so the underside is accessible.
2. Check the base diagonal: 670.5 cm.
3. Fit the steel floor cross members, with the bolts not finally tightened.
4. Manually lift the cross members until they sit against the top edge of the profile (see the warning below).
5. Re-check the diagonal: 670.5 cm, then tighten the cross members from the ends towards the middle.
6. Fix the corrugated sheet to the underside.
7. Turn the base back to the correct position and set it on the foundation, in its final place.
8. Re-check the level, alignment and diagonal: 670.5 cm.

Raise the vertical columns one at a time and fix them temporarily into the lower ISO corner castings. Insert the bolts tightened only temporarily — just enough to hold the parts in place and leave play for adjustment.

Fitting the upper frame has two options, depending on your equipment. The rule stays the same: upper frame diagonal 670.5 cm (6705 mm), temporary bolts first, final tightening only after squaring and bracing.

1. Prepare the 6 m upper rails with the corner pieces fitted and tightened onto them.
2. Lift them into place and attach the corner castings to the top of the columns, without final tightening.
3. Fit the 3 m side rails.
4. Square the upper frame onto the columns and check the columns are plumb on both axes.
5. Temporarily brace the module so it stays square and doesn't move off axis.
6. Check the upper frame diagonal: 670.5 cm.
7. Fit the roof cross members (only after squaring), with the bolts not finally tightened.
8. Re-check the upper diagonal, then tighten the cross members progressively.
9. Final tightening, progressive and alternating: bottom-top, left-right, then diagonally — don't fully tighten one corner first.
10. Re-check the base diagonal, the upper diagonal and that the columns are plumb.

1. Position the base, check the diagonal (670.5 cm) and fit the columns temporarily.
2. Separately, on the ground, assemble the upper frame: 6 m + 3 m rails, corners, roof cross members.
3. Check the upper frame diagonal on the ground: 670.5 cm and tighten progressively.
4. Lay the anti-condensation / anti-drip membrane over the cross members.
5. Fit the corrugated roof sheet over the membrane; at the joints apply Sikaflex 11FC sealant (or similar), against water ingress.
6. Lift the upper frame with the crane/forklift, controlled, as straight as possible, without swinging or twisting.
7. Set it onto the columns, attach the corner castings without final tightening and square it using the play at the joints.
8. Check plumb, brace, then tighten finally (progressive, alternating).
9. Check the position on the foundation, plumb and alignment relative to the neighbouring modules.

Fit the wall panels (if included in the kit) from the base towards the top, fixing each panel to the steel frame with the fasteners provided. Then install the roof elements according to the instructions specific to the roof type you chose.

If the kit includes doors or windows, these are fitted last, after the frame and panels are fully secured.

Go over the whole structure and check every joint. Tighten any bolt that has loosened during assembly. Check once more that the columns are plumb and that the structure's diagonals are correct.

As a precaution, apply an anti-corrosion spray to any steel surface where the zinc was scratched during assembly (cuts, tool marks). Document the main joints with photos — useful for any later work.

Final checklist:

1. Base diagonal checked: 670.5 cm (6705 mm).
2. Upper frame diagonal checked: 670.5 cm.
3. Cross members tightened from the ends towards the middle.
4. Corrugated sheet fixed to the underside of the floor.
5. The base was not twisted during lifting or turning.
6. Columns confirmed plumb on both axes.
7. Corner water drainage checked (where applicable).
8. Final progressive, alternating tightening completed.