Hollowcore and Beam & Block Load Span Tables
The precast concrete Load Span tables provided below are to be used as a guide only. Please Contact Us for specific information regarding your project.
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Hollowcore Load Span Table
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
WarmFloor Pro – Insulated Concrete Flooring
Did you know, we are also able to provide an insulated concrete flooring alternative over our traditional beam and block solution?
WarmFloor Pro by Milbank Concrete Products is a cost effective alternative to quickly constructing a thermally insulated concrete ground floor over the industry leading competitor. Reduced initial construction costs and increased energy savings make WarmFloor Pro a compelling alternative to a standard beam and block floor.
