Proslab Steel Props
Click a photo to enlarge it.
Available for rent, with erection, dismantling and transport →
Proslab Adjustable Steel Props
Proslab is a system of adjustable telescopic steel props used under slab formwork, allowing work at different heights. The load is carried safely by increasing or reducing the spacing between the props. Compared with other shoring types it is erected faster and with less labour, and it is easily used under slabs of any height and shape.
Proslab props are manufactured to EN 1065 (TS EN), the standard for adjustable telescopic steel props. The tubes are S235 structural steel certified to EN 10219-1. Our factory holds a CE certificate under EN 1090-1 EXC2; welding is done by the 135 (MAG) process to welding procedures prepared by our full-time welding engineer. The adjustment holes in the inner tubes are punched with a hydraulic press. The prop is set to the required height by coarse adjustment through the holes and fine adjustment with the threaded collar.
Technical specifications
- Standard: EN 1065
- Tube sizes (inner / outer): Ø48 × 2.5 / Ø60 × 2.5 mm and Ø48 × 3 / Ø60 × 3 mm
- Lengths: 3.00 / 3.50 / 4.00 / 4.50 / 5.00 m
- Classes: A and B to EN 1065; open-thread design (D0)
- Working length: 1.90 - 5.00 m (load capacity by class in the table)
- Material: S235 structural steel certified to EN 10219-1
- Production: EN 1090-1 EXC2 CE certified factory; welding process 135 (MAG)
- Finish: painted, electro-galvanized or hot-dip galvanized
- Accessories: tripod, four-way head, U-head, beam head
Erection steps
- Fit four-way heads on top of the props and set them to the required height.
- Use a tripod for easy erection; place the next prop according to the timber beam length.
- Set the props to the required height with coarse adjustment through the holes and fine adjustment with the collar.
- Lay H20 beams as primary beams on the four-way heads.
- Then place the secondary beams and the U-head props in the middle.
- Finally, lay the plywood to complete the slab formwork.
We put samples from every production batch of our telescopic props through a full-length load test in our factory laboratory.
Load Capacity Table
Safe load capacity of one prop (kg) by class and working length. A safety factor of 1.65 has already been applied to the values in the table; use them directly and do not divide them by a safety factor again.
| Working length (mm) | A30 | A35 | A40 | B30 | B35 | B40 | B45 | B50 |
|---|---|---|---|---|---|---|---|---|
| 1900 | 2583 | - | - | 3038 | - | - | - | - |
| 2000 | 2583 | - | - | 3038 | - | - | - | - |
| 2100 | 2562 | 2609 | - | 2967 | 3069 | - | - | - |
| 2200 | 2395 | 2609 | - | 2767 | 3069 | - | - | - |
| 2300 | 2232 | 2609 | 2353 | 2572 | 3069 | 3122 | - | - |
| 2400 | 2073 | 2458 | 2353 | 2382 | 2888 | 3122 | - | - |
| 2500 | 1915 | 2308 | 2353 | 2195 | 2711 | 3038 | - | - |
| 2600 | 1770 | 2163 | 2208 | 2029 | 2538 | 2871 | 2784 | - |
| 2700 | 1642 | 2021 | 2067 | 1882 | 2368 | 2707 | 2784 | - |
| 2800 | 1527 | 1880 | 1927 | 1750 | 2202 | 2546 | 2784 | 2485 |
| 2900 | 1423 | 1753 | 1796 | 1631 | 2053 | 2390 | 2663 | 2436 |
| 3000 | 1336 | 1638 | 1678 | 1522 | 1919 | 2233 | 2480 | 2356 |
| 3100 | - | 1534 | 1572 | - | 1797 | 2092 | 2331 | 2207 |
| 3200 | - | 1440 | 1475 | - | 1686 | 1963 | 2187 | 2071 |
| 3300 | - | 1353 | 1387 | - | 1585 | 1846 | 2057 | 1947 |
| 3400 | - | 1275 | 1307 | - | 1494 | 1739 | 1938 | 1834 |
| 3500 | - | 1206 | 1233 | - | 1406 | 1641 | 1828 | 1731 |
| 3600 | - | - | 1165 | - | - | 1551 | 1728 | 1636 |
| 3700 | - | - | 1103 | - | - | 1468 | 1636 | 1548 |
| 3800 | - | - | 1046 | - | - | 1392 | 1551 | 1468 |
| 3900 | - | - | 993 | - | - | 1321 | 1473 | 1394 |
| 4000 | - | - | 938 | - | - | 1248 | 1400 | 1325 |
| 4100 | - | - | - | - | - | - | 1332 | 1261 |
| 4200 | - | - | - | - | - | - | 1270 | 1202 |
| 4300 | - | - | - | - | - | - | 1211 | 1147 |
| 4400 | - | - | - | - | - | - | 1157 | 1095 |
| 4500 | - | - | - | - | - | - | 1107 | 1047 |
| 4600 | - | - | - | - | - | - | - | 1002 |
| 4700 | - | - | - | - | - | - | - | 959 |
| 4800 | - | - | - | - | - | - | - | 920 |
| 4900 | - | - | - | - | - | - | - | 883 |
| 5000 | - | - | - | - | - | - | - | 857 |
Values are catalogue data. We calculate the prop spacing for each project from the slab thickness and formwork layout.
Why Proslab?
Fast, Less Labour
Erected with fewer components and in less time than other shoring systems.
Coarse and Fine Adjustment
Coarse adjustment through the holes and fine adjustment with the threaded collar bring the prop exactly to level.
Class A and B
Eight classes and 1.90-5.00 m working lengths let you choose the right prop for every load.
Certified Production
Produced to EN 1065 in an EN 1090-1 EXC2 CE certified factory, with MAG welding and S235 structural steel.
Hydraulically Punched Holes
The inner tube holes are punched with a hydraulic press, giving clean and durable holes.
Three Finishes
Available painted, electro-galvanized or hot-dip galvanized.
Compatible with H20
Four-way heads and U-heads make them suitable for slab formwork with H20 timber beams.
Easy Erection with Tripod
The tripod keeps the prop upright and safe during erection.
Applications
- Slab formwork in residential and office buildings
- Slab formwork systems with H20 timber beams
- Under beam and cantilever formwork
- Temporary support in renovation and strengthening works
- Temporary propping during precast installation
How to Choose the Right Prop
- Storey height: The working length of the prop is found by deducting the formwork beams and heads.
- Slab load: The load from the slab thickness is distributed over the prop spacing to find the load per prop.
- Class: Choose a class whose capacity in the table for that length is not exceeded by this load.
- Finish: Choose painted or galvanized according to the period of use and site conditions.
Safe Erection and Use
- Erect the props vertically on firm, level ground.
- The coarse adjustment pin must always be fully inserted.
- The load per prop must not exceed the value in the load capacity table.
- Use a tripod during erection to prevent the props from tipping over.
- Do not use damaged, bent props or props with damaged threads.
Frequently Asked Questions
What is a telescopic steel prop?
A telescopic prop is a steel formwork prop made of two tubes sliding into each other, whose length is adjusted by coarse adjustment through holes and fine adjustment with a threaded collar. It is used as a vertical support under slab formwork.
Which standard are they manufactured to?
Proslab props are manufactured to EN 1065, the standard for adjustable telescopic steel props. The tubes are S235 steel certified to EN 10219-1; our factory holds a CE certificate under EN 1090-1 EXC2 and our welding procedures are managed by our full-time welding engineer.
How much load does a prop carry?
It depends on the class and working length. For example, a class B40 prop carries 2,233 kg at 3.00 m, and a class A30 prop carries 1,336 kg at the same length. The values in the table are safe loads with a 1.65 safety factor already applied; use them without dividing by the factor again. The full table is on this page.
What is the difference between class A and class B?
Class B props have a higher load capacity than class A props at the same length. The number in the class name (30, 35, 40...) shows the maximum extended length of the prop in decimetres.
Which lengths are available?
We manufacture them in 3.00 / 3.50 / 4.00 / 4.50 / 5.00 m lengths, in two wall thicknesses: Ø48/Ø60 × 2.5 mm and Ø48/Ø60 × 3 mm.
Which finishes are available?
We manufacture them painted, electro-galvanized and hot-dip galvanized.
How is the spacing between props determined?
It is calculated from the load of the slab and the capacity of the chosen prop. We calculate the right prop spacing and formwork layout for your project.
Is rental available?
Yes. We offer Proslab steel props for both sale and rental. Use the "Request a Quote for This Product" button to get an offer.