Fos Column Strength Labs .xlsx

DATA

Symbol

value

units

Grade of concrete Percentage of steel yield strength of steel Tributary Area Length Tributary Area Width Floor Tributary area for col. Load column length column width column height Beam width Beam depth Beam total length of tributary Thickness of slab Thickness of finish Thickness of masonry Height of masonry Length of masonry Unit weight of RCC Unit weight of Finish unit weight of masonry Live load intensity

Fck p Fy L B A a b hc Wb Db Lb ts t tm hm Lm y RCC y FIN y B MAS IL int.

18 1.1 415 6 5 30 0.3 0.3 4 0.3 0.5 21.4 0.125 0.075 0.23 3.5 21.4 25 25 20 5

N/mm2 % N/mm2 M M m2 M M M M M M M M M M M Kn/m3 Kn/m3 Kn/m3 Kn/m2

CALCULATIONS Fy value col. Working capacity P= 0.6 fck + 0.77 (p/100) fy self weight of slab Load from finish Load from Masonry Self weight of Beam Self weight of column Imposed (Live) load

before 1990 93.75 56.25 167.44 39 9 150

KN KN KN KN KN KN

since 1990

Fck value before 2002

Total Load

515.44

KN since 2002

b) working stress in column a) col. Working capacity P= 0.6 fck + 0.77 (p/100) fy Factor of Safety FOS

5.7271111111

N/mm2

14.31505

N/mm2

2.4995237079

FOS > 1.9 - no further action required If 1.9> FOS>1.5 - SP2 action, min. yellow colour If 1.5> FOS>1.3 - SP1 action, min. Amber colour If 1.3> FOS-Priority 1 action, Mandatory red colour

250 N/mm2 415 N/mm2

10 N/mm2 18 N/mm2

DATA

Symbol

value

units

Grade of concrete Percentage of steel yield strength of steel Tributary Area Length Tributary Area Width Floor Tributary area for col. Load column length column width column height Beam width Beam depth Beam total length of tributary Thickness of slab Thickness of finish Thickness of masonry Height of masonry Length of masonry Unit weight of RCC Unit weight of Finish unit weight of masonry Live load intensity

Fck p Fy L B A a b hc Wb Db Lb ts t tm hm Lm y RCC y FIN y B MAS IL int.

18 1.18 415 5.17 6.9 35.673 0.45 0.45 3.5 0.3 0.5 23.24 0.125 0.075 0.23 3 23.24 25 25 20 5

N/mm2 % N/mm2 M M m2 M M M M M M M M M M M Kn/m3 Kn/m3 Kn/m3 Kn/m2

CALCULATIONS col. Working capacity P= 0.6 fck + 0.77 (p/100) fy self weight of slab Load from finish Load from Masonry Self weight of Beam Self weight of column Imposed (Live) load

111.478125 66.886875 154.146 41.8875 17.71875 178.365

KN KN KN KN KN KN

Total Load

570.48225

KN

b) working stress in column a) col. Working capacity P= 0.6 fck + 0.77 (p/100) fy Factor of Safety FOS

2.8171962963 N/mm2

14.57069 5.1720535126

FOS > 1.9 - no further action required If 1.9> FOS>1.5 - SP2 action, min. yellow colour If 1.5> FOS>1.3 - SP1 action, min. Amber colour If 1.3> FOS-Priority 1 action, Mandatory red colour

N/mm2

Fy value before 1990

250 N/mm2

since 1990

415 N/mm2

Fck value before 2002

10 N/mm2

since 2002

18 N/mm2