A three-hinged arch has a span of 30 m and arise of 10 m. The arch carries UDL of 60 kN/m on the left half of its span. It also carries two concentrated loads of 160 kN and 100 kN at 5 m and 10 m from the right end. The horizontal thrust will be nearly
1
446 kN
2
436 kN
3
428 kN
4
418 kN