Prestressed hollowcore slabs >> technical properties



Technical properties


TECHNICAL PROPERTIES VS
  VS 12 VS 15 VS 18 VS 20 SC 20
Depth (cm) 12 15 18 20 20
Width (cm) 60 120 60 120 60 120 60 120 120
Self weight (kN/m1) 1,32 2,70 1,51 3,02 1,70 3,43 1,87 3,73 3,32
Theoretical weight incl. grout (kN/m2) 2,40 2,35 2,77 2,68 3,15 3,02 3,46 3,32 2,99
Grout (l/m2) 7,9 4,0 9,5 4,8 11,7 5,9 13,6 6,8 6,8
Concrete strength class C45/55 C45/55 C45/55 C45/55 C50/60
Maximum span (m) 7,20 8,00 10,00 11,50 11,50
Thermal resistance of slab
(m2 K/W)
0,136 0,147 0,158 0,166 0,181
Sound insulation without
structural topping (dB(A))
48,41 48,13 50,27 49,84 51,41 50,90 53,17 52,63 51,27
Sound insulation with 5 cm structural topping (dB(A)) 53,70 53,50 55,00 54,70 55,95 55,40 57,1 56,7 55,7
Mrd (in kNm) Eurocode 2 20,7 54,4 47,3 94,8 74,7 149,6 100,7 201,6 146,6

Mrd = ultimate bending moment resistance


TECHNICAL PROPERTIES EP/SC
  VS 24 SC 24 EP 27 SC 27 EP 32 SC 32 EP 40 SC 40
Depth (cm) 24 24 27 27 32 32 40 40
Width (cm) 60 120 60 120 60 120 60 120
Self weight (kN/m1) 2,09 4,03 2,36 4,26 2,63 4,79 3,03 5,47
Theoretical weight incl. grout (kN/m2) 3,98 3,61 4,42 3,83 4,92 4,32 5,99 4,98
Grout (l/m2) 17,6 8,8 18,6 9,7 22,1 11,5 29,2 15,2
Concrete strength class C45/55 C50/60 C50/60 C50/60 C50/60 C50/60 C50/60 C50/60
Maximum span (m) 13,50 14,30 15,00 17,20 16,00 17,50 17,00 19,00
Thermal resistance of slab (m2 K/W) 0,181 0,200 0,209 0,207 0,220 0,216 0,243 0,232
Sound insulation without structural topping (dB(A)) 55,00 53,70 56,40 54,50 57,76 56,60 60,40 59,07
Sound insulation with 5 cm structural topping (dB(A)) 58,6 57,6 59,6 58,2 60,8 59,7 62,8 61,7
Mrd (in kNm) Eurocode 2 134,5 279,1 168,4 380,3 207,2 419,5 268,7 544,4

Mrd = ultimate bending moment resistance


Manufacturing tolerances (span, widht and depth)
  Span Span using angled slab ends Width Rib cut width Depth
VS, EP, SC 10 mm
+ 0,0005 L
15 mm
+ 0,0008 L
3 mm + 10/-30 mm 5 mm



Hole tolerances
  Span Width Position Concrete length with exposed armature Steel with exposed armature
VS, EP, SC 30 mm 30 mm 30 mm 15 mm 10% min. 10 mm

 

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