1.Prefabricated leave-in-place free movement joint system wih a function of formwork
2.A wide range of integral load transfer mechanisms to suit all floor loadings.
3.Heavy Duty performance with cold drawn steel for extreme armouring of joint arrises.
4.Easy and fast installation with a help of fixing devices.
5.The system enables flooring contractors to cast industrial concrete floors for the high
flatness category and super flat floor constructions.
Product is suitable for following facilities
warehouses factories logistics centers car parks depots
Material and Dimensions
AFJ Joint is designed for floor slab thickness from 100mm to 300mm, and joint opening up
For the rest of slab thickness and joint opening, ReTop is able to design and supply the joints
as per customer requirements.
AFJ Joints provided with variant versions such as plain steel, hot dip galvanized, stainless
steel to all working environment.
AFJ Joints covers not only all standard products, but also intersections, such as 4-ways
sction, 3-ways section, “L" 2-ways section and rounded section.
ReTop provideds the column isolators with circular and rectangular versions for customer
Joint arris armouring
sheet steel divider
AFJ Joint Plain steel
AFJ Joint HDG
AFJ Joint stainless
Configuration & Formation
Plate Dowel Type
Size B x H
Plate Thickness T
Joint Opening W
146mm x 150mm
Joint Height H (mm)
Dowel Centers c/c (mm)
Joint Length L (mm)
Suitable Slab Thickness H (mm)
Resistances for AFJ Joint
All the resistances of AFJ Joint dowels are worked out according to TR34. Concrete Industrial Ground Floor, 4th Edition.
The data shown in below tables or single plate dowels only.
Joint Opening (mm)
Shear Psh (KN)
Bearing/Bending Pmax Plate (KN)
Design punching shear resistance (KN) of FJD 6 according TR34.4 for 15mm joint opening
Slab thickness (mm)
Punching Pp C30
Punching Pp C35
Punching Pp C40
Punching Pp C45
Punching Pp C50
The punching shear resistances are calculated for plain concrete ONLY, and according TR34.4 should be used also for
steel and macro-synthetic fiber reinforced concrete. TeTop is able to design and manufacture AFJ Joint with resistances
for other joint openings or concrete grades are needed.
Guide for AFJ Joint installation
Step 1. Sub-bass level
The sub-base must be made as accurate and level as possible to the requirements on the slab drawing. The tolerance
of the level has to be taken into account when ordering joints. Typically the Joint height will be 10mm to 35mm less
than the slab depth.
Step 2 Joint location
The required layout, position and height of the joints will be specified on the floor slab drawing which must be followed
closely. String lines are placed to identify the position of joints according to the slab lay-out dimensioned drawings.
Step3. Joint installation with help of AFJ-Fix
Step4. Pouring concrete with poker
Once joints are correctly positioned pouring of concrete
can commence. Concrete should be poured to the
surface level of the top strip with particular attention
to consolidation around the dowels and sleeves. All
plate type dowels require close attention to filling
around the dowels to eliminate the possiblity of air
entrapment. This should be done with a suitable
vibrating poker. Both sides of joints can be poured at
the same time if so required.
Step 5. Re-check joint height
After the use of the poker vibrator, check the installed
height of the joint once again. The joint may lift within
the concrete when compacted following the use of the
Step 6. Remove concrete excess
It's important that any concrete excess is removed from the top of the joint during finishing operations,so that the top of the joint is visible when concrete works are complete.
Packing & Delivery
3250(L) * 1060 (W) * 1250 (D)
The normal package is 35 pieces in one slatted crated (Size: L*W*H). We also can pack it according to customers special request.
AFJ "+" 4-ways sections
91.8% Response Rate
AFJ "T" 3-ways sections
91.8% Response Rate
AFJ "C" circular sections
91.8% Response Rate
Re Top-led SCM(Shanghai)Co.Ltd was established in Shanghai in 2010.Which owned 1000square meters’manufacturing base in Wuxi city. Re Top engaged in researching developing,manufacturing and marketing the products of concrete connections and composite beams for both precast and cast-in-situ,Re Top protucts are widely used in warehouses,factories,logistics centers,car parks and depots.Re Top’s innovative solutions make your construction process faster,safer and mor effective.