IBR Profile Floor Deck Panel Line

This IBR profile floor deck panel line rolls the Inverted Box Rib sheet used as a floor deck layer in Southern African construction. The panel is laid across joists or bearers and then covered with board, screed or a finish floor, so the deck stiffens the floor, spreads the load and lets the frame run with fewer bearers.

What the IBR Profile Is

IBR stands for Inverted Box Rib. It is a pierce-fixed trapezoidal fluted sheet, and in South Africa, Zimbabwe, Zambia and Botswana it is the profile that fabricators, merchants and inspectors already recognise.

Parameter	Value
Profile	IBR, Inverted Box Rib, trapezoidal fluted, pierce-fixed
Effective cover width	686 mm standard; wide-span variants cover 762-828 mm
Ribs	Five trapezoidal ribs across the 686 mm cover
Rib pitch	About 171 mm
Rib height	About 36.5-37 mm
Steel thickness	0.4-0.8 mm; floor work uses the upper end of the range
Materials	Galvanized, Aluzinc or pre-painted coil
Fixing	Screwed through the sheet into joists or bearers

Using IBR as a Floor Deck Layer

The sheet is not a slab. It is the deck layer of a built-up floor, and it works with the frame below and the board above.

Build-up	Components	Effect
Board over IBR deck	IBR sheet fixed to joists, structural board on top	Flat walking surface, deck spreads load between joists
Screed over IBR deck	IBR sheet, then a thin screed or levelling layer	Solid floor feel, tight surface tolerance
Deck only	IBR sheet fixed to closely spaced bearers	Lightest and cheapest option for access and service platforms

Because the deck spans between the bearers and carries load across them, a designer can usually use fewer or lighter bearers than a plank-only floor, which is the main reason the detail is common on mezzanine and loft floors in the region.

IBR Floor Deck Compared with a Concrete Formwork Deck

Item	IBR floor deck layer	Concrete formwork deck
Rib height	About 37 mm	50-153 mm
Concrete	None	Poured slab on top of the deck
Role in the floor	Deck layer that stiffens the floor and spreads load	Permanent formwork, and bottom reinforcement after curing
Where it sits	Between the joists and the board or screed	Below the slab
Fixing	Pierce-fixed through the sheet	Shear studs or through-deck fasteners to the beams
Site programme	No wet trade, walkable immediately	Pour plus curing period

Machine Configuration

Item	Specification
Profile	IBR 686 mm cover, five ribs
Forming rows	21 rows, the proven forming train for the 686 mm profile
Main frame	350H or 400H H-beam
Mid plate	75-80 mm
Motors	5.5-7.5 kW, matched to the thickness range you sell
Transmission	Six-point double chain drive
Feed strip width	925 mm for a 686 mm cover sheet
Forming rollers	Forged 45# steel, quench hardened, polished and chrome plated
Cutting	Cut-to-length shear with square ends and quantity count
Control	PLC with touch screen, length and quantity setting
Line length	Substantially shorter than a deep-rib concrete deck line, because 37 mm ribs need fewer passes

Line Layout

Section	Function
Decoiler	Carries the coil and feeds strip under steady tension
Feed guide	Aligns the strip and holds the cover width steady
Main forming unit	Rolls the five ribs to the 686 mm cover and 37 mm rib height
Shear	Cuts panels to the ordered length
Output table	Receives panels for inspection and bundling
Control cabinet	Length, quantity and speed setting

Coil and Material

Item	Note
Material	Galvanized, Aluzinc or pre-painted coil
Thickness for floor work	Usually the upper end of the 0.4-0.8 mm range
Thickness for roofing and cladding	The lower end of the same range, on the same roll set
Coil inner diameter and weight	Confirmed at order stage so the decoiler is sized correctly
Coated coil	Non-marking roll arrangement available for pre-painted material

Why This Profile Suits Regional Projects

IBR is the default sheet profile across South Africa, Zimbabwe, Zambia and Botswana, so no local party has to accept an unfamiliar section.
Coil and finished sheet are traded through the same regional merchants, so deck panels enter an existing supply chain rather than a new one.
One roll set serves both a floor deck layer and a roof or wall application, so the machine earns on more than one product line.
Shallow ribs and moderate thickness keep the forming train short, which suits producers with limited floor space.
A board-over-deck floor is walkable the day it is laid, which fits projects running on short programmes.

Questions Buyers Ask

Question	Answer
Is the IBR sheet strong enough to act as a floor?	As a deck layer it works together with the joists and the board above. The span and loading must be confirmed by your engineer; we match the coil thickness and rib geometry to that design.
What thickness should I run?	Floor work normally takes the upper end of the 0.4-0.8 mm range, roofing the lower end. The frame and motor are sized for the thickest material you plan to sell.
Can the same line produce roofing IBR?	Yes. Same profile and same roll set. You change the coil thickness and the cut length, nothing else.
Can it make the wide-span variant?	The 762-828 mm wide-span variants are a different roll set. Tell us if you need both and we quote the second set or a second machine.
Does the panel need end laps or stiffening?	Laps and stiffening follow the fixing detail for your project. The machine delivers accurate cover width and rib height, which is what makes the laps close cleanly.