a rule of thumb for establishing the proper angle of a staircase states that the sum of one riser plus one…

a rule of thumb for establishing the proper angle of a staircase states that the sum of one riser plus one tread should equal between ____. \n\na. 18 and 19 inches\nb. 17 and 18 inches\nc. 16 and 17 inches\nd. 14 and 16 inches

a rule of thumb for establishing the proper angle of a staircase states that the sum of one riser plus one tread should equal between ____. \n\na. 18 and 19 inches\nb. 17 and 18 inches\nc. 16 and 17 inches\nd. 14 and 16 inches

Answer

Brief Explanations:

In construction, a common rule - of - thumb is that the sum of one riser plus one tread should be between 17 and 18 inches for a comfortable and safe staircase angle.

Answer:

B. 17 and 18 inches