--- title: "Plan and elevation of English bond wall" subject: "Concrete Technology and Masonry Structure" chapter: 7 key: "semester_5/concrete_technology_and_masonry_structure:english-bond-plan-elevation" source: https://www.bctengineer.com/q/semester_5/concrete_technology_and_masonry_structure/english-bond-plan-elevation site: BCT Engineering --- # Plan and elevation of English bond wall Concrete Technology and Masonry Structure · Chapter 7: Introduction to masonry structures - Asked in: 2082 Bhadra, 3 marks; 2080 Baisakh, 3 marks (asked 2 times) - Video: [English Bond- One Brick Wall | Plan of Even Course and Isometric View | Part 2 |Civil Engineering](https://www.youtube.com/watch?v=K7HA1ZBrbpI) — Our Channel - Answer checked by Claude Sonnet 5.5 on 2026-10-14 - Page: https://www.bctengineer.com/q/semester_5/concrete_technology_and_masonry_structure/english-bond-plan-elevation - Whole chapter: https://www.bctengineer.com/md/semester_5/concrete_technology_and_masonry_structure/chapter-7 ## Question Draw the plan (showing two perpendicular walls) of odd-even courses and the elevation of a one and half brick thick wall made with English bond. ## Short answer In a one-and-a-half brick thick English bond wall, odd courses show outer stretchers and inner headers with a queen closer at the quoin; even courses reverse this arrangement. Perpendicular walls interlock by alternating which wall runs through so no continuous vertical joint forms. ## Answer **Data:** brick 230 × 110 × 55 mm (typical Nepali brick) with 10 mm joints; a one-and-a-half brick wall is 345 mm thick. In English bond the courses alternate. In a 1½ brick wall, each course has headers on one face and stretchers on the other, reversed in the next course, so each face shows alternate stretcher and header courses. A queen closer is placed next to the quoin header. S = stretcher, H = header, Q = queen closer. #### Plan of odd and even courses (two perpendicular walls) Wall A runs to the right and wall B runs downwards from the outer corner (outer faces are at the top and on the left). One unit is about half a brick (115 mm), so a stretcher is 2 units long and the wall is 3 units (345 mm) thick. The walls continue beyond the sketch. ```text Odd course: wall A runs through the corner, wall B butts against it +-----------+-----------+-----------+ | | | | | S | S | S | | | | | +-----+--+--+--+-----+--+--+-----+--+ | | | | | | | | | | | | | | | | | | | | | | | | | H |Q | H | H | H | H |Q | | | | | | | | | | | | | | | | | | | | | | | | | +-----+--+-----+--+--+-----+-----+--+ | | Q | | +-----------+ | | | | S | H | | | | | +-----------+ | | | +-----+ H | | | | | +-----------+ | | | | S | H | | | | | +-----------+ | | Q | +-----+-----------+ Even course: wall B runs through the corner, wall A butts against it +-----------+-----+--+-----+-----+-----+ | | | | | | | | H | | | | | | | | | | | | | +-----------+ S |Q | H | H | H | | Q | | | | | | +-----------+ | | | | | | | | | | | | | H +-----+--+-----+--+--+-----+--+ | | | | | +-----------+ | S | S | | | | | | | H | S +-----------+-----------+ | | | +-----------+ | | | | | H +-----+ | | | +-----------+ | | | | | H | S | | | | +-----------+ | | | | | H +-----+ | | | +-----------+ S | | Q | | +-----------+-----+ ``` **Odd course:** wall A runs through the corner. Its outer row is stretchers and its inner row (two units wide) is headers, starting with the quoin header at the corner, followed by a queen closer. Wall B butts against A, with stretchers on its outer face and headers on the inner side, starting with a queen closer. **Even course:** the arrangement is reversed. Wall B runs through the corner, with headers on its outer face (the quoin header first, then a queen closer) and stretchers on the inner side. Wall A butts against B, with headers on its outer face and stretchers on the inner side. So the outer faces of both walls show stretchers in the odd course and headers in the even course. The through wall changes in alternate courses, so the corner is interlocked and there is no continuous vertical joint. #### Elevation (face of the wall) The face looks the same for a 1 brick and a 1½ brick wall: stretcher and header courses alternate. ```text Elevation (English bond) +-------+-------+-------+-------+ | S | S | S | S | stretcher course +---+-+-+-+---+-+-+---+-+-+-+---+ | H |Q| H | H | H | H | H |Q| H | header course +---+-+-+-+---+-+-+---+-+-+-+---+ | S | S | S | S | stretcher course +-------+-------+-------+-------+ S = stretcher, H = header, Q = queen closer ``` In the face elevation, the stretcher courses and header courses alternate. A queen closer is next to the quoin header, every perpend of the header course lies a quarter brick from those of the stretcher courses, and the back face repeats the same pattern with the courses reversed. ## Check yourself The answer's key points as multiple-choice questions, with the correct option and why. 1. In a 1 1/2 brick thick English bond wall, how are headers and stretchers arranged in one course? A. Headers on one face and stretchers on the other, reversed in the next course B. Only stretchers on both faces in every course C. Headers on both faces in every course D. Alternate header and stretcher in the same row on both faces Answer: A. Each course has headers on one face and stretchers on the other, and this is reversed in the next course, giving alternate courses. (Key point: Course arrangement) 2. What is the thickness of a one and half brick wall using 230 x 110 x 55 mm bricks with 10 mm joints? A. 230 mm B. 285 mm C. 345 mm D. 460 mm Answer: C. 230 mm (one brick) plus 110 mm half brick plus a 10 mm joint gives 350 in practice, taken as 345 mm in the answer; it is one and half bricks. (Key point: Wall thickness) 3. Where is the queen closer placed in the header course? A. At the middle of the wall B. Next to the quoin header C. Under the lowest course only D. Replacing the quoin header Answer: B. A queen closer follows the quoin header so that perpends are staggered. (Key point: Queen closer) 4. How are two perpendicular walls interlocked at the corner in English bond? A. The same wall always runs through and the other always butts B. A continuous vertical joint is left at the corner C. Mortar alone bonds the corner without staggering D. The through-running wall alternates between the two walls in alternate courses Answer: D. In the odd course one wall runs through and in the even course the other does, so no continuous vertical joint forms. 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