Sperretabell

For K-bjelke og K-bjelke plus

godkjenninger

▪ Senteravstandsperrer 0,6m.
▪ Forutsatt at sperrer er fastholdt mot vipping.
▪ Tabellen er beregnet med materialfaktor gM=1,15
▪ Gjelder tak og luftede loft over rom som vanligvis er oppvarmet, klimaklasse 1.
▪ Pålitelighetsklasse 1-3
▪ Basert på standarder NS-EN 1990, NS-EN 1991-1-3, NS-EN 1995-1-1.
▪ Tak kan ha snøfangere. Formfaktor 0,8.
▪ Beregnet for lastkombinasjon "ofte forekommende" med snø og egenlaster.
▪ Deformasjonskrav er satt til L/250 (endelig deformasjon) og L/300 (umiddelbar deformasjon).
▪ Takutstikk er kontrollert mot brudd for maksimal linjelast ved raft iht. NS-EN 1991-1-3 NA. 6.3.(1).
▪ Maks utstikk er satt til a= L/6.
▪ Maks deformasjon i felt er beregnet for tilfeller uten utstikk.
▪ Tabellen skal ikke brukes når deformasjonen kan medføre varig skade på andre bygningsdeler.

For større spennvidder ta kontakt med oss på konstruksjon@inntre.no 

Sperretabell K-bjelke

Tung tekking:

Takstein (1 kN/m2) over ett felt

Snølast kN/m21.52.02.53.03.54.04.55.06.07.0
36x2504.554.514.384.274.164.073.983.913.633.40
36x3005.455.395.245.114.984.874.774.654.324.04
48x2004.013.793.863.763.663.583.513.443.323.16
48x2505.004.954.814.684.574.474.384.294.143.92
48x3005,965.925.765.605.475.355.245.154.964.66
48x300 Plus6.606.406.236.075.935.805.685.565.375.19

Snølast kN/m21.52.02.53.03.54.04.55.06.07.0
36x2504,384.514.384.274.164.073.983.913.633.40
36x3005,245.395.245.114.984.874.774.654.324.04
48x2003,863.793.863.763.663.583.513.443.323.16
48x2504,814.954.814.684.574.474.384.294.143.92
48x3005,755.925.765.605.475.355.245.154.964.66
48x300 Plus6,226.406.236.075.935.805.685.565.375.19

Snølast kN/m21.52.02.53.03.54.04.55.06.07.0
36x2503,693,813,723,643,563,493,433,383,273,17
36x3004,414,564,454,364,274,194,114,043,913,80
48x2003,243,353,273,203,133,073,012,972,872,79
48x2504,044,174,0783,993,913,833,763,703,583,48
48x3004,844,994,8834,774,684,64,514,434,294,17
48x300 Plus5,555,415,295,185,074,974,884,804,654,52

Lett tekking:

Stålplater/takpapp (0,7 kN/m2) over ett felt

Takvinkel α = 0-15º

Snølast kN/m21.52.02.53.03.54.04.55.06.07.0
36x2505,014,824,664,514,384,274,174,023,713,47
36x3005,995,775,575,405,255,114,994,774,414,12
48x2004,414,254,103,983,863,763,673,593,443,21
48x2505,495,295,114,964,814,694,584,474,294
48x3006,546,306,095,915,745,605,465,345,084,75
48x300 Plus7,096,836,606,406,236,075,935,805,565,31

Takvinkel α = 16-30º

Snølast kN/m21.52.02.53.03.54.04.55.06.07.0
36x2504,734,264,424,294,174,073,973,883,693,45
36x3005,665,095,285,134,994,874,754,654,384,10
48x2004,173,753,893,773,673,583,493,423,283,17
48x2505,194,674,854,714,574,474,364,264,103,95
48x3006,175,595,785,615,465,335,25,094,904,72
48x300 Plus6,696,466,266,085,925,785,645,525,315,13

Takvinkel α = 31-45º

Snølast kN/m21.52.02.53.03.54.04.55.06.07.0
36x2504,244,113,993,883,783,703,613,543,413,30
36x3005,074,914,774,644,534,434,334,244,093,95
48x2003,733,613,513,423,333,263,193,123,002,90
48x2504,654,504,374,264,154,063,973,893,753,62
48x3005,545,375,225,084,964,854,744,654,484,33
48x300 Plus6,015,825,665,515,385,265,145,044,864,70

Tung tekking:

Takstein (1,0kN/m2) over tilnærmet to like felt

Snølast kN/m21.52.02.53.03.54.04.55.06.07.0
36x2505,775,495,094,774,514,284,093,923,643,40
36x3006,96,516,045,665,355,084,854,654,324,04
48x2005,084,874,694,434,183,973,793,643,373,16
48x2506,346,085,855,505,194,944,714,524,193,92
48x3007,577,276,966,536,175,865,595,364,984,66
48x300 Plus8,217,887,597,306,896,556,256,005,565,21

Snølast kN/m21.52.02.53.03.54.04.55.06.07.0
36x2505,164,974,814,674,454,234,043,883,613,38
36x3007,175,955,765,595,285,034,84,614,284,01
48x2004,544,384,244,114,003,903,753,603,343,13
48x2505,665,465,285,134,994,874,664,484,163,90
48x3006,776,536,336,145,985,795,545,314,934,63
48x300 Plus7,337,076,856,656,476,316,175,945,525,17

Snølast kN/m21.52.02.53.03.54.04.55.06.07.0
36x2504,334,24,093,993,903,823,743,673,543,33
36x3005,185,034,904,784,674,574,484,394,213,95
48x2003,803,693,593,513,433,353,283,233,123,02
48x2504,744,64,484,374,274,184,104,023,893,77
48x3005,675,515,375,245,125,014,914,824,664,52
48x300 Plus6,155,975,825,685,555,435,325,235,054,89

Lett tekking:

Stålplater/takpapp (0,7 kN/m2) over tilnærmet to like felt

Snølast kN/m21.52.02.53.03.54.04.55.06.07.0
36x2506,145,795,334,974,674,424,214,033,723,47
36x3007,346,866,325,905,545,254,994,784,424,12
48x2005,415,144,924,6114,334,103,903,733,453,22
48x2506,746,416,145,725,45,104,854,644,284,00
48x3008,027,647,276,786,386,045,755,515,094,75
48x300 Plus8,708,297,957,587,136,766,436,165,695,31

Snølast kN/m21.52.02.53.03.54.04.55.06.07.0
36x2505,525,285,084,914,624,384,174,213,693,45
36x3006,66,326,085,835,495,204,964,754,394,10
48x2004,864,654,474,324,194,063,873,703,433,20
48x2506,065,805,585,395,215,054,814,604,263,98
48x3007,216,916,656,436,235,995,715,475,054,73
48x300 Plus7,837,507,226,986,766,576,386,115,655,28

Snølast kN/m21.52.02.53.03.54.04.55.06.07.0
36x2504,674,504,364,234,114,013,923,843,653,41
36x3005,595,395,215,064,934,804,694,604,334,06
48x2004,113,963,843,723,623,533,453,383,243,13
48x2505,124,944,784,644,524,414,304,214,053,91
48x3006,115,895,715,545,405,265,145,044,854,67
48x300 Plus6,636,406,196,025,855,715,585,475,255,07

Flatt tak:

Flatt tak over ett felt - egenlast 0,7kN/m2
Maks nedbøyning på 15mm. Karakteristisk lastkombinasjon.

Snølast kN/m21.52.02.53.03.54.04.55.06.07.0
36x2504,454,284,144,013,913,793,683,583,413,27
36x3005,104,904,734,594,474,364,264,184,033,91
48x2004,053,893,723,573,453,343,243,153,02,88
48x2504,774,594,434,304,194,094,03,923,753,59
48x3005,455,245,074,924,794,684,584,494,334,19
48x300 Plus5,795,575,395,235,094,974,864,774,604,45

Beregningskalkulator

Her kan du enkelt beregne hvor mye du trenger av de enkelte produktene til ditt byggeprosjekt. Vi har laget kalkulatorer som finner riktig mengde eller riktig bjelkedimensjon.