khaleel045,
You are welcome.
I notice in your calc sheet that you are using E = 199,000 MPa. For 7-wire strand the E is usually a bit less than that. Check the test value from your strand mill certificate. Usually in the range of 195-197,000 MPa.
Also, don't get too carried away with reporting theoretical elongation to 2 decimal places. 902.79 mm should be presented as 903, or even better to round to the closest 5 mm, so 905 mm. Your field guys will appreciate it - they are not using a micrometer to measure the strand elongation on a 145m long bed.
Finally, I am curious - your calcs show a strand UTS of fpu = 1770 MPa. Is this the common grade of strand you use in Bahrain? In the USA (and many other countries) 270 ksi or 1860 MPa is more common.