Hollowcore Load Span Table
These tables are provided as a guide only. Please Contact Us for specific information.
The spans indicated below have not been limited to 50 x unit depth usually used to minimise the dynamic movement in the planks. We therefore do not recommend spans greater than the following: 150mm planks — 7.50m, 200mm planks — 10.00m & 250mm planks — 12.50m. Spans that exceed this are shown in grey.
Hollowcore Load/Span Table (Non-Composite)
| Overall Structural Depth(mm) | Unit Depth (mm) | Self Weight | Self Weight + 1.5nN/m2 for Architectural Finishes (or other Dead load) + Imposed (Live) Load shown below | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| 0.75 | 1.5 | 2.0 | 2.5 | 3.0 | 4.0 | 5.0 | 10.0 | 15.0 | |||
| 150 | 150 | 2.48 | 9.05 | 8.40 | 8.05 | 7.70 | 7.45 | 6.95 | 6.55 | 5.25 | 4.50 |
| 150 | 150 | 2.95 | 8.50 | 7.95 | 7.65 | 7.35 | 7.10 | 6.65 | 6.30 | 5.10 | 4.40 |
| 200 | 200 | 2.97 | 10.70 | 10.05 | 9.55 | 9.30 | 8.95 | 8.40 | 7.95 | 6.45 | 5.55 |
| 250 | 250 | 3.46 | 12.00 | 11.30 | 10.85 | 10.50 | 10.15 | 9.60 | 9.10 | 7.40 | 3 |
Non-propped Composite Hollowcore Load/Span Table (50mm Structual Topping)
| Overall Structural Depth(mm) | Unit Depth (mm) | Self Weight inc. Topping (Kn/m2) | Self Weight + 1.5nN/m2 for Architectural Finishes (or other Dead load) + Imposed (Live) Load shown below | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| 0.75 | 1.5 | 2.0 | 2.5 | 3.0 | 4.0 | 5.0 | 10.0 | 15.0 | |||
| 200 | 150 | 3.68 | 8.35 | 8.05 | 7.80 | 7.65 | 7.45 | 7.10 | 6.85 | 5.75 | 5.10 |
| 250 | 200 | 4.17 | 9.90 | 9.45 | 9.20 | 8.95 | 8.75 | 8.35 | 8.15 | 6.80 | 5.95 |
| 300 | 250 | 4.66 | 11.00 | 10.60 | 10.35 | 10.05 | 9.95 | 9.40 | 9.05 | 7.65 | 6.75 |
Propped Composite Hollowcore Load/Span Table (50mm Structual Topping)
| Overall Structural Depth(mm) | Unit Depth (mm) | Self Weight inc. Topping (Kn/m2) | Self Weight + 1.5nN/m2 for Architectural Finishes (or other Dead load) + Imposed (Live) Load shown below | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| 0.75 | 1.5 | 2.0 | 2.5 | 3.0 | 4.0 | 5.0 | 10.0 | 15.0 | |||
| 200 | 150 | 3.68 | 8.85 | 8.45 | 8.20 | 8.00 | 7.80 | 7.40 | 7.10 | 5.90 | 5.20 |
| 250 | 200 | 4.17 | 10.20 | 9.75 | 9.50 | 9.20 | 9.00 | 8.60 | 8.20 | 6.90 | 6.05 |
| 300 | 250 | 4.66 | 11.35 | 10.85 | 10.55 | 10.30 | 10.05 | 9.60 | 9.20 | 7.75 | 6.85 |
Beam and Block Load Span Tables
The load/span tables show the maximum clear span for both domestic and other loading conditions, such as nursing homes, hotels and commercial developments. These tables are are provided as a guide only. Please Contact Us for specific information.
Beam and Block Load/Span Tables T155
| 155mm deep T beam (1 hour fire resistance) Medium Density Infill blocks 1450kg/m3 | Maximum Clear Span* in metres below allows for the characteristics live loads as stated + Self weight + 1.8 kN/m2(75mm Screed) finishes + 1.00 kN/m2 partition allowance | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Beam centres(mm) | Block Spacing' | Self-Weight (kN/m2) | Imposed Live Load kN/m2 | ||||||||
| 0.75 | 1.50 | 2.00 | 2.5 | 3.00 | 4.00 | 5.00 | 7.50 | ||||
 | 510 | W | 1.78 | 3.75 | 3.50 | 3.30 | 3.20 | 3.05 | 2.85 | 2.70 | 2.35 |
 | 398 | A | 1.88 | 4.20 | 3.90 | 3.75 | 3.60 | 3.45 | 3.25 | 3.05 | 2.70 |
 | 285 | N | 2.06 | 4.95 | 4.60 | 4.40 | 4.20 | 4.15 | 3.80 | 3.60 | 3.15 |
 | 620 | DW | 2.11 | 4.70 | 4.40 | 4.20 | 4.05 | 3.90 | 3.65 | 3.45 | 3.05 |
 | 508 | DA | 2.26 | 5.15 | 4.80 | 4.60 | 4.45 | 4.25 | 4.00 | 3.80 | 3.35 |
 | 395 | DN | 2.50 | 5.70 | 5.35 | 5.15 | 4.95 | 4.80 | 4.50 | 4.25 | 3.75 |
 | 505 | TN | 2.75 | 6.10 | 570 | 5.50 | 5.30 | 5.10 | 4.80 | 4.75 | 4.05 |
*Clear span between supporting walls
‘ W = wid(440mm) A = Alternate (440+215) N = Narrow (215mm)
DW = Double beams Wide
DA = Double beams Alternate
DN = Double beams Narrow
TN = Triple beams Narrow
Beam and Block Load/Span Tables T225
| 225mm deep T beam (1 hour fire resistance) Medium Density Infill blocks 1450kg/m3 | Maximum Clear Span* in metres below allows for the characteristics live loads as stated + Self weight + 1.8 kN/m2(75mm Screed) finishes + 1.00 kN/m2 partition allowance | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Beam centres(mm) | Block Spacing' | Self-Weight (kN/m2) | Imposed Live Load kN/m2 | ||||||||
| 0.75 | 1.50 | 2.00 | 2.5 | 3.00 | 4.00 | 5.00 | 7.50 | ||||
 | 510 | W | 2.07 | 5.15 | 4.80 | 4.65 | 4.45 | 4.35 | 4.05 | 3.85 | 3.45 |
 | 398 | A | 2.26 | 5.75 | 5.40 | 5.20 | 5.00 | 4.85 | 4.55 | 4.35 | 3.85 |
 | 285 | N | 2.59 | 6.60 | 6.25 | 6.00 | 5.80 | 5.65 | 5.35 | 5.05 | 4.55 |
 | 620 | DW | 2.60 | 6.35 | 5.95 | 5.75 | 5.55 | 5.40 | 5.10 | 4.85 | 4.35 |
 | 508 | DA | 2.86 | 6.85 | 6.50 | 6.25 | 6.05 | 5.90 | 5.55 | 5.30 | 4.75 |
 | 395 | DN | 3.27 | 7.55 | 7.15 | 6.95 | 6.75 | 6.55 | 6.20 | 5.90 | 5.30 |
 | 505 | TN | 3.65 | 7.95 | 7.60 | 7.35 | 7.15 | 6.95 | 6.60 | 6.30 | 5.70 |
*Clear span between supporting walls
‘ W = wid(440mm) A = Alternate (440+215) N = Narrow (215mm)
DW = Double beams Wide
DA = Double beams Alternate
DN = Double beams Narrow
TN = Triple beams Narrow