If the length of a wall on either side of a lintel opening is at least half of its effective span L, the load W carried by the lintel is equivalent to the weight of brickwork contained in an equilateral triangle, producing a maximum bending moment

• A. <img src="/_files/images/civil-engineering/rcc-structures-design/78-13-114-1.png">
• B. <img src="/_files/images/civil-engineering/rcc-structures-design/78-13-114-2.png">
• C. <img src="/_files/images/civil-engineering/rcc-structures-design/78-13-114-3.png">
• D. <img src="/_files/images/civil-engineering/rcc-structures-design/78-13-114-4.png">
• E. <img src="/_files/images/civil-engineering/rcc-structures-design/78-13-114-5.png">