This technical test covers engineering drawing, aptitude, structural steel, fire protection paints (including intumescent coatings that expand to insulate steel), and structural standards like ASTM/UL for fire resistance ratings Intumescent coatings expand 10-50x when heated, forming insulating barrier � Steel loses strength at 550°C; coatings delay reaching critical temperature � Tested per ASTM E-119, UL 263, BS 476 for Class A fire resistance