H20 Timber Beam (HT 20plus)

Click a photo to enlarge it.

View Product Catalogue Request a Quote for This Product

Manufacturer's certificate: MPA Stuttgart · EN 13377

M&M Kaufmann HT 20plus H20 Timber Beam

As a dealer of Mayr-Melnhof Holz (M&M Kaufmann), one of Europe's largest timber producers, we supply HT 20plus H20 timber beams. HT 20plus is an international brand used all over the world for its high number of reuses and reliable load capacity.

Quality raw material, precise processing and the proven plastic end-cap system give HT plus formwork beams a long service life. The web, made of a fully glued 3-layer solid wood panel, provides high load capacity in every climate. The flanges are made of machine strength-graded, finger-jointed timber; web and flanges are joined with an extremely strong finger joint.

Product standard

Industrially produced timber formwork beams are intended for use in falsework and formwork for concrete construction. They are loaded in the direction of the beam height. EN 13377 specifies the classification, requirements and test methods for formwork beams with heights of h = 16, h = 20 and h = 24 cm. In Germany, DIN EN 13377 applies together with DIN 20000-2; according to German regulations the beams are marked with the Ü mark (conformity mark).

The images on this page are taken from the archive of our manufacturer Mayr-Melnhof Holz.

Look up scaffolding and formwork terms in our Glossary →

HT 20plus beam cross-section: 200 mm height, 80 mm flange width, 40 mm flange height

Technical Data

Dimensions: Beam height 200 mm (± 2.0 mm) · Flange height 40 mm (− 1.5%) · Flange width 80 mm (− 1.5%) · Web thickness 24 mm (± 0.5 mm)
Lengths: 1.80 / 1.90 / 2.00 / 2.45 / 2.50 / 2.65 / 2.90 / 3.30 / 3.60 / 3.90 / 4.20 / 4.50 / 4.90 / 5.90 / max. 10.00 m
Weight: 4.4 kg/m
Packaging: Standard bundle: 100 pcs, container bundle: 105 pcs. Bundles are delivered on timber bearers, ready for site.
Material: Spruce and fir · Timber moisture 12% ± 3% · Melamine resin adhesive, EN 301 Type I · Fire class D-s2, d0
Design Values (EN 13377): Vk = 23.9 kN (perm. Q = 11 kN) · Mk = 10.9 kNm (perm. M = 5 kNm) · Rb,k = 47.8 kN · EI = 486 kNm² · E flange = 11,000 N/mm² · E web = 6,700 N/mm²

HT plus Beam Family

Beams of different heights according to your needs (on request). Values are taken from the official Mayr-Melnhof Holz brochure.

	HT 12plus	HT 16plus	HT 20plus	HT 24plus
Beam height	120 mm	160 mm	200 mm	240 mm
Flange height	35 mm	35 mm	40 mm	40 mm
Flange width	65 mm	65 mm	80 mm	80 mm
Web thickness	24 mm	24 mm	24 mm	24 mm
Weight	2.7 kg/m	3.1 kg/m	4.4 kg/m	4.9 kg/m
EI (bending stiffness)	97 kNm²	212 kNm²	486 kNm²	775 kNm²
Vk (shear, characteristic)	15.3 kN	18.4 kN	23.9 kN	28.2 kN
Permissible Q	7 kN	8.5 kN	11 kN	13 kN
Mk (moment, characteristic)	4.4 kNm	5.9 kNm	10.9 kNm	14.1 kNm
Permissible M	2.1 kNm	2.7 kNm	5 kNm	6.5 kNm
Rb,k (support reaction)	29.4 kN	36.8 kN	47.8 kN	56.4 kN
Length	max. 5.00 m	max. 8.00 m	max. 10.00 m	max. 10.00 m
Standard bundle	144 pcs	150 pcs	100 pcs	80 pcs
Quality control	WPK	WPK	WPK + MPA	WPK

WPK = factory production control · MPA = external monitoring by the Materials Testing Institute Stuttgart. Permissible values according to EN 13377 Annex E (γm = 1.3, γF = 1.5, kmod = 0.9).

Load Table

Slab thickness [cm]	Total load [kN/m²]	Table 1: Cross beamCross beam spacing [m]					Table 2: Yoke beamSelected yoke beam spacing [m]
		0.5	0.625	0.675	0.75	1	1.25	1.5	1.75	2	2.25	2.5	3	3.5
		Max. support width of cross beam = Max. yoke beam spacing					Max. permissible support width = Support spacing
10	4.60	3.64	3.38	3.29	3.18	2.89	2.64	2.41	2.23	2.09	1.97	1.87	1.59	1.37
12	5.12	3.46	3.21	3.13	3.02	2.74	2.50	2.28	2.11	1.98	1.86	1.72	1.43	1.23
14	5.64	3.30	3.07	2.99	2.89	2.62	2.38	2.17	2.01	1.88	1.73	1.56	1.30	1.11
16	6.16	3.18	2.95	2.87	2.77	2.52	2.28	2.08	1.93	1.79	1.59	1.43	1.19	1.02
18	6.68	3.07	2.85	2.77	2.68	2.43	2.19	2.00	1.85	1.65	1.46	1.32	1.10	0.94
20	7.20	2.97	2.76	2.69	2.59	2.36	2.11	1.92	1.75	1.53	1.36	1.22	1.02	0.87
22	7.72	2.88	2.68	2.61	2.52	2.28	2.04	1.86	1.63	1.42	1.27	1.14	0.95	0.81
24	8.24	2.81	2.61	2.54	2.45	2.20	1.97	1.78	1.53	1.33	1.19	1.07	0.89	0.76
26	8.76	2.74	2.54	2.48	2.39	2.14	1.91	1.67	1.44	1.26	1.12	1.00	0.84	0.72
28	9.28	2.68	2.49	2.42	2.34	2.08	1.86	1.58	1.35	1.19	1.05	0.95	0.79	0.68
30	9.80	2.62	2.43	2.37	2.29	2.02	1.80	1.50	1.28	1.12	1.00	0.90	0.75	0.64
35	11.23	2.50	2.32	2.26	2.18	1.89	1.57	1.31	1.12	0.98	0.87	0.78	0.65	0.56
40	12.65	2.39	2.22	2.16	2.05	1.74	1.39	1.16	0.99	0.87	0.77	0.70	0.58	0.50
45	14.08	2.30	2.13	2.05	1.95	1.56	1.25	1.04	0.89	0.78	0.69	0.63	0.52	0.45
50	15.50	2.23	2.03	1.96	1.85	1.42	1.14	0.95	0.81	0.71	0.63	0.57	0.47	0.41
55	16.93	2.16	1.94	1.87	1.73	1.30	1.04	0.87	0.74	0.65	0.58	0.52	0.43	0.37
60	18.35	2.09	1.87	1.78	1.60	1.20	0.96	0.80	0.69	0.60	0.53	0.48	0.40	0.34
65	19.78	2.01	1.78	1.65	1.48	1.11	0.89	0.74	0.64	0.56	0.49	0.45	0.37	0.32
70	21.20	1.94	1.66	1.54	1.38	1.04	0.83	0.69	0.59	0.52	0.46	0.42	0.35	0.30
75	22.50	1.89	1.56	1.45	1.30	0.98	0.78	0.65	0.56	0.49	0.43	0.39	0.33	0.28
80	23.80	1.83	1.48	1.37	1.23	0.92	0.74	0.62	0.53	0.46	0.41	0.37	0.31	0.26
85	25.10	1.75	1.40	1.30	1.17	0.88	0.70	0.58	0.50	0.44	0.39	0.35	0.29	0.25
90	26.40	1.67	1.33	1.23	1.11	0.83	0.67	0.56	0.48	0.42	0.37	0.33	0.28	0.24
95	27.70	1.59	1.27	1.18	1.06	0.79	0.64	0.53	0.45	0.40	0.35	0.32	0.26	0.23
100	29.00	1.52	1.21	1.12	1.01	0.76	0.61	0.51	0.43	0.38	0.34	0.30	0.25	0.22

Example: for a 30 cm slab with a cross beam spacing of 0.75 m, the cross beam can be supported at a span of up to 2.29 m; with a yoke beam spacing of 2.5 m, the yoke beam can be supported at a span of up to 0.90 m.

Design Charts

Single-Span Beam - deflection/load chart — Single-Span Beam

Multi-Span Beam - deflection/load chart — Multi-Span Beam

Why HT 20plus?

Strong Web

3-layer solid wood panel for structural outdoor use to EN 13353 SWP/3; high load capacity in continuous use in all climate zones.

Selected Solid Flanges

Made of quality, selected solid timber sections; machine strength-graded (at least C24) and finger-jointed.

Strong Joint

Flange and web are permanently joined with a finger joint.

Plastic End Cap

Protects the beam ends against splitting and clearly extends the service life of the beam.

Reusable

Proven load capacity even after many uses in every climate.

Clear Marking

Length and production code printed on the top of the flange.

Surface Protection

The whole beam is impregnated with a water-based coloured varnish; flanges are chamfered by about 4 mm.

Monitored Quality

Factory production control (WPK) and external monitoring by the Materials Testing Institute Stuttgart (MPA).