Slab H20 beams

GBM's slab beams are currently the most resistant in the market.
Available in various sizes, they are made of solid fir.

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In this page:

About GBM's slab beams,
Technical features,
Technical data,
Load table,
Our worksites,
Videotutorial,
Technical data sheet in PDF format,
GBM beams and panels catalogue.

About GBM's slab beams

GBM H20 and GBM H20+ slab beams are currently the most resistant in the market.

Available in various sizes, the outer parts are made of selected quality solid fir, comb-like coupled using the finger-joint technology, and with a three-layer core.

Upon request, they may come in plastic protections so as to reduce the risk of scratching the outer parts of the beams.

Technical features

Below are the features of GBM's slab wooden H20 beams

Type of wood: fir
Weight: 4.5 kg/m
Gluing: melamine resin-based glue, type EN 30, approved for fixing wooden structural components
External: made of selected solid fir and coupled with 80 x 40 mm section - milled and perfectly calibrated for an optimal assembly with core
Core: three layers of solid fir
Surface: treatment with water repellent paint
Standard length: 1.95 / 2.45 / 2.65 / 2.90 / 3.30 / 3.60 / 3.90 / 4.50 / 4.90 / 5.90 m
Standard packaging: 50/100 pcs per package

Thanks to their perfect assembly, GBM H20 and GBM H20+ beams can be cut and used at any length.

GBM slab beams technical data

Dimension	Values (a)	Tolerance (b)
Beam height	200 mm	± 2 mm
External height	40 mm	± 0,6 mm
External width	80 mm	+ 0,8 mm/-1,2 mm
Core thickness	28 mm	± 1 mm

a) The values are applied with wood humidity at 12% ± 2%

b) In compliance with the SIST EN 13377:2002 standards

Certificates	DIN1052-1:1988-04	DIN1052:2008-12 / Eurocode 5
Resistance	Bending	Load capacity characteristic limit
Shear strength	ZUL Q = 11,0 kN	Vk = 23,9 kN
Bending moment	ZUL M = 5,0 kNm	Mk = 10,9 kNm
Load	-	Rb,k = 47,8 kN
Sectional modules (1)	Wx= 461 cm3
Geometric moment of inertia (1)	Ix= 4.613 cm4
Modulus of elasticity	E = 10.000 N / mm2
Shear modulus	G = 600 N / mm2

1) The values of the sectional modules and the geometric moment of inertia are applied to new beams. A higher safety value must be used for worn out beams.

Load table

		Distance between crossbeams (m)				Selected distance between the main beams (m)
Floor thickness (cm)	Total load (kN/m2)	0,50	0,625	0,667	0,75	1,00	1,25	1,50	1,75	2,00	2,25	2,50	3,00	3,50
10	4,38	3,70	3,43	3,35	3,22	2,93	2,72	2,50	2,31	2,16	2,04	1,93	1,70	1,45
12	4,91	3,50	3,24	3,17	3,05	2,77	2,57	2,36	2,19	2,05	1,92	1,82	1,52	1,30
14	5,43	3,32	3,09	3,02	2,91	2,64	2,45	2,24	2,08	1,94	1,82	1,64	1,37	1,18
16	5,95	3,19	2,96	2,90	2,79	2,54	2,35	2,14	1,98	1,85	1,66	1,50	1,25	1,07
18	6,48	3,07	2,85	2,79	2,69	2,44	2,25	2,06	1,90	1,72	1,53	1,38	1,15	0,99
20	7,00	2,97	2,76	2,70	2,60	2,36	2,17	1,97	1,82	1,59	1,42	1,28	1,07	0,91
22	7,53	2,88	2,68	2,62	2,52	2,29	2,09	1,90	1,69	1,48	1,32	1,19	0,99	0,85
24	8,05	2,81	2,61	2,55	2,45	2,23	2,02	1,84	1,58	1,39	1,23	1,11	0,93	0,80
26	8,57	2,74	2,54	2,49	2,39	2,18	1,95	1,73	1,49	1,30	1,16	1,04	0,87	0,75
28	9,10	2,67	2,48	2,43	2,34	2,12	1,89	1,63	1,40	1,23	1,09	0,98	0,82	0,71
30	9,68	2,61	2,43	2,38	2,29	2,06	1,83	1,54	1,32	1,15	1,03	0,93	0,77	0,65
35	11,25	2,49	2,31	2,26	2,18	1,90	1,59	1,32	1,14	0,99	0,89	0,80	0,66	0,56
40	12,83	2,38	2,21	2,17	2,07	1,74	1,39	1,16	1,00	0,87	0,78	0,70	0,58	0,49
45	14,40	2,29	2,13	2,07	1,94	1,55	1,24	1,04	0,89	0,78	0,69	0,62	0,51	0,44
50	15,97	2,22	2,03	1,96	1,84	1,40	1,12	0,94	0,80	0,70	0,62	0,56	0,46	0,40
55	17,54	2,15	1,93	1,87	1,69	1,27	1,02	0,85	0,73	0,63	0,56	0,51	0,42	0,36
60	19,11	2,07	1,85	1,75	1,56	1,17	0,94	0,78	0,66	0,58	0,52	0,46	0,39	0,33
65	20,68	1,98	1,72	1,62	1,44	1,08	0,87	0,72	0,61	0,54	0,48	0,43	0,36	0,31
70	22,26	1,91	1,60	1,50	1,34	1,01	0,81	0,66	0,57	0,50	0,44	0,40	0,33	0,28
75	23,83	1,85	1,50	1,41	1,25	0,94	0,75	0,62	0,53	0,47	0,41	0,37	0,31	0,27
80	25,40	1,76	1,41	1,32	1,17	0,88	0,71	0,58	0,50	0,44	0,39	0,35	0,29	0,25
85	26,97	1,65	1,32	1,24	1,11	0,83	0,66	0,55	0,47	0,41	0,37	0,33	0,27	0,23
90	28,54	1,56	1,25	1,17	1,05	0,79	0,62	0,52	0,44	0,39	0,35	0,31	0,26	0,22
95	30,11	1,48	1,19	1,11	0,99	0,75	0,59	0,49	0,42	0,37	0,33	0,29	0,25	0,21
100	31,69	1,41	1,13	1,06	0,94	0,71	0,56	0,47	0,40	0,35	0,31	0,28	0,23	0,20

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Our worksites

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Videotutorial

Technical data sheet

As a tool, the GBM slab H20 beams technical data sheet is useful for worksite operators. The technical data sheet instructs the operator on the main features of the beams.

Download the GBM slab H20 beams technical data sheet in pdf format (0.3 MB)
.

Download the GBM slab H20 beams technical data sheet in pdf format (10 MB)

GBM's beams and panels catalogue

Would you like to see the full catalogue of GBM's beams and panels?

Download the full catalogue in pdf format (3 MB).

Or go straight to the online version.

Content of the catalogue? General information and technical features: type of wood, weight, dimensions (they come in various standard lengths), certificates etc.