A reinforced concrete spandrel-braced arch bridge, of which the design value of reaction force F ld born by abutment cap is equal to 2150 kN, has a local compression area of 300 mm ×300 mm ( taking into account the rectangular plate thickness and the area increase according to 45 o rigid angle ) , as shown in Figure. The cubic concrete compressive strength of abutment cap is 35 MPa, thus f cd = 16.1 MPa. The strength grade of indirect reinforcement is HPB300 , thus f sd = 250 MPa. Please calculate the local pressure of this abutment cap.