🧱 NCMA Reinforced CMU Retaining Walls (6-14 ft Height), Overturning Safety >1.5

Cantilever CMU Retaining Wall Calculator

Size cantilever reinforced concrete block retaining walls under NCMA Design Manual & IBC Chapter 18: calculate lateral earth pressure base bending moment (M = ka x γ x H³ / 6), verify safety factors against sliding (>1.5) and overturning (>1.5), continuous concrete footing keyway sizing, and structural masonry contractor margins.

1. Project & Operating Inputs

Retaining Wall Face Area (Square Feet e.g. 4,800 Sq Ft / 600'x8')

Retained Wall Height (Feet e.g. 8.0 ft High Retaining Wall)

Customer Bid Price for Supplied & Erected Retaining Wall ($ / Sq Ft)

12" CMU Blocks, Solid Core Grout, #6 Dowels, Footing Concrete ($ / Sq Ft)

2. Financial Breakdown & Yield

NCMA CMU RETAINING WALL SIZING

Turnkey Retaining Wall Contract Profit

Structural Masonry Margin

0.0%

Gross Revenue / Bill

Total Project CapEx

Operating / Material Cost