Modeling - Building - exterior - details - hand rails

Create cylinder - select 2 cap segments

Delete inside segment on both sides

(no need to cap inside as geometry gap will not be visible

Select segment - editable poly - inset

Select top and bottom horizontal edge - scale down to create square

Extrude polygon - add line of geometry via connect - select side squares of geometry and extrude out as shown

Selecting both sides at the same time allows both sides to be extruded at same time to the same amount

This completes bracket

Rotate bracket geometry - create cylinder - use [shift + a then select bract the align] - alter diameter to fit inside bracket - copy and place second bracket at other end of cylinder

Repeat for second angled hand rail

Place into layer

(picture shows frozen in layer)

Create cylinder - as shown

Copy and place on steps as shown

Copy rotate and reduce height of cylinder - place as shown

Select first step cylinder - attach other cylinders to original as shown

Important to select original cylinder first otherwise pivot point may be skewed due to rotation of "hand rail"