Angle irons and pads - This is a common
installation where the back corners of the step sit on 6"x6"x3/8 angle
irons that are bolted to the foundation. This prevents the step from
settling back against the house and from getting out of level from side
to side. The two front corners are centered on free floating concrete
pads.
Steel brackets - In this installation the entire
step is actually suspended on large steel brackets that prevent the
step from settling even if the ground under the step should settle.
This option is only available on step sizes up to and including three
risers.
Angle irons and posts - The back corners are
installed on angle irons as described above. The front corners sit on
4' tapered pre-cast frost piers. This installation is often used when a
step sits below a roof that has columns between the step and roof.
Pads - The step sits on four free floating concrete
pads. This installation is generally used only in situations that are
not next to a poured house foundation such as in front of a wood porch
on a free standing in grade situation.
Angle irons and pads - This is a common
installation where the back corners of the step sit on 6"x6"x3/8 angle
irons that are bolted to the foundation. This prevents the step from
settling back against the house and from getting out of level from side
to side. The two front corners are centered on free floating concrete
pads. 
Steel brackets - In this installation the entire
step is actually suspended on large steel brackets that prevent the
step from settling even if the ground under the step should settle.
This option is only available on step sizes up to and including three
risers. 
