Pre-defined system variables
Tedds contains a number of pre-defined variables, which you can use in all your calculations. The following table presents all pre-defined system variables in Tedds.
Predefined system variables | ||
---|---|---|
Base system variables | General | π = 3.1415926536 |
pi = 3.1415926536 | ||
g_{acc} = 9.80665 m/s² | ||
e_{e} = 2.7182818285 | ||
Water | Kinematic viscosity at 10°C | ν_{water@10 }= 0.00000131 m²/s |
Density at 4°C | ρ_{water@4} = 1000 kg/m³ | |
Concrete | BS 8110 | Ε_{S8110} = 200 kN/mm² |
α_{C} = 10x10^{-6}°C^{-1 } | ||
ν_{C} = 0.2 | ||
m_{c} = 16 | ||
ρ_{C.norm} = 2400 kg/m³ | ||
ρ_{C.norm_w }= 2500 kg/m³ | ||
ρ_{C.light} = 1800 kg/m³ | ||
ρ_{C.light_w} = 1900 kg/m³ | ||
AC | ρ_{C.norm} = 2400 kg/m³ | |
ρ_{C.light} = 1800 kg/m³ | ||
BS5400 | ρ_{C5400} = 2500 kg/m³ | |
α_{C5400 }= 12x10^{-6}°C^{-1 } | ||
Ε_{y_5400} = 200 kN/mm² | ||
Steel | General | ν_{S} = 0.3 |
α_{S} = 12x10^{-6}°C^{-1} | ||
BS5950 | ρ_{S5950} = 7860 kg/m³ | |
Ε_{S5950} = 205kN/mm² | ||
G_{S5950} = 78.8 kN/mm² | ||
K_{S5950} = 170.8 kN/mm² | ||
EC3 | ρ_{SEC3} = 7850 kg/m³ | |
Ε_{SEC3} = 210kN/mm² | ||
G_{SEC3} = 80.8 kN/mm² | ||
K_{SEC3} = 175 kN/mm² | ||
BS5400 | ρ_{S5400} = 7860 kg/m³ | |
Ε_{S5400} = 205kN/mm² | ||
G_{S5400} = 80 kN/mm² | ||
Steel | AISC / LRFD | ρ_{SLRFD} = 490 lb/ft³ |
Ε_{SLRFD} = 29000 ksi | ||
G_{SLRFD} = 11200 ksi | ||
AISC / ASD | r_{SASD} = 490 lb/ft³ | |
Ε_{SASD} = 29000 ksi | ||
G_{SASD} = 11200 ksi | ||
ACI | Ε_{ACI} = 29000 ksi | |
Aluminum |
General | ρ_{Al} = 2720 kg/m³ |
Ε_{Al} = 70 kN/mm² | ||
G_{Al} = 26 kN/mm² | ||
K_{Al} = 69 kN/mm² | ||
ν_{Al} = 0.33 | ||
α_{Al} = 22x10^{-6}°C^{-1} |