Unequal Angle Section Properties

Properties in imperial units of steel angles with unequal legs are indicated below.

Unequal angle section properties. Part 1 l shapes unequal legs dimensions and properties principal axes y z a gross cross sectional area of the section b 1 full nominal length of leg 1 t 1 leg 1 thickness b 2 full nominal length of leg 2 t 2 leg 2 thickness α principal angle a y shear area with respect to the principal axis y i y moment of inertia about the principal axis y. Unequal leg angles l view other structural sections bs 5950. Here you ll find dimensions for all uk unequal angle steel sections described by the steelwork design guide to bs5950 1 2000 volume 1 section properties member capacities 7th edition also known as the blue book.

Section properties detailing fire parameters effective section properties for sections subject to axial compression axial compression long leg attached with s275. The moment of inertia of an angle cross section can be found if the total area is divided into three smaller ones a b c as shown in figure below. This european standard does not apply to angles with square roots.

However a more straightforward calculation can be achieved by the combination a c b c c. M mass per m b depth of section a width of section t web thickness t flange thickness r1 root radius r2 toe radius a area of section. Cold formed unequal angle section is highly accurate roll formed standard section.

Galvanizing the steel increases its corrosion resistance. A36 steel it is weldable formable and machinable. Universal beams ub.

Steel angles with unequal legs metric units 1 cm4 10 8 m 104 mm 1 in4 4 16x105 mm4 41 6 cm4. The final area may be considered as the additive combination of a b c. Unequal angles hot rolled dimensional tolerances and grades according to astm a276 astm a484 astm a479 asme sa479 mtc en 10204 3 1 general properties designation dimensions position of axes g h b t r a y s z s v 1 v 2 u 1 u 2 u 3 kg m mm mm mm mm mm2 mm mm mm mm mm mm mm x102 l 45 x 25 x 4 2 13 45 25 4 5 2 67 5 88 15 68 29 76 20 59 10 22 14.

It is mainly used in the construction transportation and manufacturing industries where dimensional accuracy and high quality steels are required. Tolerances for equal and unequal leg angles are given in en 10056 2. Astm a36 angle is one of the most widely used carbon steels in industry.