Wood beam calculations. The optimum gap to cover using the wooden beams is 2-4 meters. The beam cutshould be rectangular in plan. Beam height should count 1,4 parts to the 1 part of the beam width. The wood beam should be nestled inside the wall at least for 12 cm and that joint should be enforced with the steel anchor The wood beam should me placed bridging the shortest gaps between the walls. The wood beam weight with the cieling insulation, floor and cieling planks is counted as 190-22 Kg/m2. The applied weight should be counted as 200 Kg/m2.

Here you can find an online wood beam calculator

Steel rebar weight
Steel i beam weight

Downpage we are providing precounted wood beam calculations table.

Wood beam calculations table for pine wood and weight400 Kg/m2

gap (m)/ distance between beams (m)	2,0	2,5	3,0	4,0	4,5	5,0	6,0
0,6	75x100	75x150	75x200	100x200	100x200	125x200	150x225
1,0	75x150	100x150	100x175	125x200	150x200	150x225	175x250

If you ar enot planning to apply weight of 400 kg/m2 you can use another table for less weights:

The table of minimum wood beam dimensions

Weight, Kg/м2	Wood beam dimensions (mm) for gaps (m)
	3,0	3,5	4,0	4,5	5,0	5,5	6,0
150	50х140	50х160	60х180	80х180	80х200	100х200	100х220
200	50х160	50х180	70х180	70х200	100х200	120х220	140х220
250	60х160	60х180	70х200	100х200	120х200	140х220	160х220
350	70х160	70х180	80х200	100х220	120х220	160х220	200х220

If you are planning to use round wooden logs you can use that calculations table:

Mimimum log diameter for different gaps with total weight 400Kg/m2

Gap, М	distance between logs, М	log diameter, СМ
2	1	13
	0,6	11
2,5	1	15
	0,6	13
3	1	17
	0,6	14
3,5	1	19
	0,6	16
4	1	21
	0,6	17
4,5	1	22
	0,6	19
5	1	24
	0,6	20
5,5	1	25
	0,6	21
6	1	27
	0,6	23
6,5	1	29
	0,6	25
7	1	31
	0,6	27
7,5	1	33
	0,6	29

Steel i beam and rebar calculations