Step 5#

In Figure B.7 for Region B Sign Area = 4.8 x 2.2 = 10.6m².

Height to centre of sign, H’ = ground clearance height, H + B/2 = 2 + 2.2/2 = 3.1m.

For two posts as determined in Step 4, interpolation of the design chart yields post choices of 2/100 DN CHS or 2/100 x 50 x 4.0 RHS.

For the Moreton District maximum corrosion protection is required so the RHS posts would require hot dip galvanising.

Select 2/100 DN pregalvanised posts.