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SP RIB – Construction Joint Mesh Back to products
SPI Equip’s SP-Rib (also called Super-Rib) is a simple, permanent galvanized steel formwork sheet used to form concrete construction joints. SP-Rib can be used for wall joints and slab joints and is designed to save labour and increase construction speed.
SP-Rib is left in the concrete and produces a surface that will bond directly to the next pour. SP-Rib is installed by nailing the sheet to timbers on the form edge in order to create the required concrete cover. The SP-Rib sheet should be supported as per the table below. The reinforcement bars, depending on size, can be pushed through the sheet or if required, simply cut the tabs with tin snips to create a larger hole. Once concrete is poured, use a light brush or wash to remove the excess concrete on the outside of the SP-Rib sheet and it is ready for the next pour.
SP-Rib eliminates the timber stop end, so no more cutting plywood to size, drilling holes for the reo, stripping the ply and then scabbling the surface for the next pour.
SPI Equip stocks SP-Rib in 0.3mm which is suitable for concrete slab edges and 0.4mm which is suitable for walls and slabs. The table below shows the clear distance between supports when perpendicular to the SP-Rib mesh ribs. Thickness of 0.5mm & 0.6mm are also available by order.
NOTES: The site engineer(s) must calculate the actual concrete pressure and design and/ or approve the SP-Rib’s support/ bracing is suitable.
Concrete Pour Height250mm500mm750mm1000mm1250mm1500mm2000mm2500mm3000mm
Typical Concrete Pressure6.3KPa12.5KPa18.8KPa25.0KPa31.3KPa37.5KPa50.0KPa62.5KPa75KPa
Assumed Pressure SP-Rib3.2KPa6.3KPa9.5KPa12.7KPa15.8KPa19.0KPa25.3KPa31.7KPa38.0KPa
SP-Rib 0.4mm 90° to ribs950mm support spacing675mm support spacing550mm support spacing475mm support spacing425mm support spacing400mm support spacing350mm support spacing300mm support spacing275mm support spacing
SP-Rib 0.3mmTo be usedon lowpressureapplicationsonly. Siteengineer tospecify supportspacings