Passion for Timber

Formwork beams

Product range
& data

Here you can find all product infos on the formwork beams PF20 range of products.plus and PF20 by Pfeifer.

Supply programmes

Allowed loads and thresholds according to EN 13377

Overview

Lengths190, 245, 250, 265, 275, 290, 300,
330, 360, 390, 450, 490, 590 cm
Special lengths to 11.90 m
PF20plusEnd cap possible up to 9 m – over 9 m only straight cut
PF20Rounding with sealing possible up to 9 m – over 9 m only straight cut
Bridge thickness27 mm
Weightca. 4.5 kg/rm
Wood moisture12 % +/- 4 % at delivery
Package units50 or 100 pieces

Allowed values

Shear force
Q = 11 kN
Reaction force
A = 22 kN
Bending torqueM = 5 kNm

Characteristic threshold

Shear force
Vk = 23,9 kN
Support resistence
Rb,k = 47,8 kN
Bending torqueMk = 10,9 kNm
StiffnessE1 = 450 kNm²

Measurement table

  Table 1Table 2
  Cross beam distance (m)Yoke beam distance (m)
  0,500,630,670,751,001,251,501,752,002,252,503,003,50
Ceiling thickness in cmTotal load kN/m²Allowed span width for cross beams (m)Allowed span width for yoke beams in (m) = max. Distance of ceiling supports
104,403,633,373,293,172,882,672,462,282,132,011,911,671,43
124,923,433,193,123,002,722,532,332,162,021,901,791,491,28
145,443,273,042,972,862,602,412,412,051,921,801,621,351,16
165,963,142,922,852,742,492,312,121,901,831,641,481,231,05
186,483,032,812,752,652,402,222,031,881,701,511,361,130,97
207,002,932,722,662,562,322,141,951,801,571,401,201,050,90
227,522,842,642,582,482,262,061,881,671,461,301,170,980,84
248,042,762,572,512,422,192,001,821,561,371,221,090,910,78
268,562,702,502,452,352,141,931,711,471,291,141,030,860,73
289,082,632,442,392,302,091,881,621,381,211,080,970,810,69
309,662,572,392,342,252,031,821,521,301,141,010,910,760,65
3511,222,452,272,232,141,891,571,311,120,980,870,780,650,56
4012,782,352,182,132,041,721,381,150,980,860,770,690,570,49
4514,342,262,102,04 1,531,231,020,880,770,680,610,510,44
5015,902,182,011,94 1,381,110,920,790,690,610,550,460,40
Case example:
  • given: Ceiling thickness (18 cm) + Cross beam distance (75 cm)
  • searched: Yoke beam distance + support distance
  • 1 Ceiling thickness: 18 cm
  • 2 Cross beam distance: 75 cm
  • 3 Allowed yoke beam distance according to table 1 = 2.65 m.
  • 4 equals or choose the next lower yoke beam distance in the table 2: 2.50 m
  • 5 in table 2 column 2.5 according to ceiling thickness (18 cm) read the allowed support distance: 1.36 m
  • 6 Attention: Supports have to be controlled in terms of corresponding load capacity!

    The deflection of beams is limited to L/500.
    Traffic load 1,5 kN/m² or 20% of fresh concrete weight.