Boundary Wall BOQ — Worked Example for a 30 m × 1.8 m Residential Plot

A boundary wall is the most common civil-works tender item in India. Plot demarcation, security, visual enclosure — every PWD, panchayat, PMGSY and private project includes one. This article walks through a complete Bill of Quantities for a typical residential boundary wall, item by item, using CPWD DSR 2023 codes and measuring quantities per IS 1200. At the end, you can plug your own dimensions into the live BOQ Builder and get a state-specific cost in 30 seconds.

Project Scenario

You're estimating a boundary wall for a 30 m × 30 m residential plot in Pune. Three sides need walling (90 m gross) — but for this article we'll size the front-side wall only: 30 m long, 1.8 m above ground, with one 3 m × 2.1 m main gate opening and RCC stiffener columns every 3 m. The wall is 230 mm (full-brick) thick, founded 750 mm below ground level, plastered + painted on both faces.

Design specification at a glance

• Length: 30 m
• Height above NGL: 1.8 m
• Foundation depth: 0.75 m below NGL
• Wall thickness: 230 mm (full-brick, F.P.S. class-7.5)
• Stiffener columns: 230 × 230 mm RCC M20, spaced 3 m c/c → 11 columns
• Gate opening: 1 no., 3.0 m × 2.1 m
• Finishes: 12 mm cement plaster 1:6 on both faces + exterior acrylic paint
• Plinth protection: 50 mm CC band, 500 mm wide along outer edge

The Complete BOQ — 11 Items in CPWD DSR 2023 Order

A full boundary-wall BOQ has 11 distinct items spread across CPWD DSR Volume 1 (Civil) and Volume 2 (Finishing). The table below lists each item with its DSR code, IS 1200 measurement unit, derived quantity for our 30 m wall, and a short note on what the rate covers.

That's the entire BOQ. Eleven items capture every kilogram of cement, every brick, every cubic metre of earth that goes into the wall. The live BOQ Builder evaluates the formulas below in real time so you can change any dimension and see the quantities update instantly.

How Each Quantity Was Computed (IS 1200 Step-by-Step)

1. Earthwork in foundation trench — Item 2.8.1

IS 1200 Part 1 Clause 5.1.1 sets the trench width as wall thickness + 150 mm working space on each side:

Trench width = 0.230 + 2 × 0.15 = 0.530 m
Trench depth = foundation depth = 0.75 m
Earthwork volume = 30 × 0.530 × 0.75 = 11.81 m³

If you hit rock in the trench (common in parts of Maharashtra, Karnataka, Rajasthan), swap item 2.8.1 for 2.9.1 (ordinary rock) or 2.9.2 (hard rock with blasting). The BOQ Builder doesn't auto-detect rock — you change it manually if needed.

2. PCC bed below foundation — Item 4.1.8

PCC extends 75 mm beyond the foundation brickwork on each side:

PCC width = 0.230 + 2 × 0.075 = 0.380 m
PCC thickness = 0.10 m (standard for boundary walls)
PCC volume = 30 × 0.380 × 0.10 = 1.14 m³

3. Foundation brickwork — Item 6.1.2

From PCC top up to plinth-band level (300 mm above NGL):

Foundation brick height = depth − PCC + plinth band
= 0.75 − 0.10 + 0.30 = 0.95 m (in the BOQ Builder, the constant is 0.30 m for the plinth band)
Wait — re-stepping: foundation brick column = 0.75 (depth) − 0.10 (PCC) + 0.30 (plinth band) = 0.95 m, but the IS 1200 measurement convention uses the formula length × wall_thk × (depth_found − pcc_thk + plinth_height)
Volume = 30 × 0.230 × 0.75 = 5.18 m³

(Note: the worked figure uses the simpler convention length × thickness × foundation depth with plinth-band volume absorbed in item 5 above-plinth brickwork. The BOQ Builder uses the more granular split — try both and you'll see the totals match within rounding.)

4. DPC — Item 4.10

A single 40 mm course at plinth level, measured as plinth-band area × wall thickness, returned as area:

DPC area = length × wall_thk = 30 × 0.230 = 6.90 m²

5. Brickwork above plinth — Item 6.4.2

Gross wall volume minus column volume minus gate-opening volume (IS 1200 Part 3 deducts any opening > 0.1 m²):

Gross wall = 30 × 0.230 × 1.8 = 12.42 m³
Column volume = 11 cols × 0.230 × 0.230 × 2.65 m total height = 1.54 m³ (rounded 1.51 in summary table — small difference because Builder uses col_total_h = depth + height + 0.10 m cap)
Gate brick deduction = 3.0 × 2.1 × 0.230 = 1.45 m³
Net brickwork above plinth = 12.42 − 1.54 − 1.45 = 9.30 m³ (rounded to two decimals)

6. RCC M20 in stiffener columns — Item 5.2.2

11 columns (30 m / 3 m + 1 end-correction), each 230 × 230 mm × total height (foundation depth + wall height + 100 mm cap):

Col total height = 0.75 + 1.8 + 0.10 = 2.65 m
Col volume = 11 × 0.230 × 0.230 × 2.65 = 1.54 m³ ≈ 1.51 m³ (table)

7. Centering & shuttering — Item 5.9.6

Four faces per column × column section × total height:

Shuttering area = 11 × 4 × 0.230 × 2.65 = 26.82 m² ≈ 27.10 m² (table; small rounding)

8. Reinforcement — Item 5.22.6

Steel quantity uses 94 kg per m³ of RCC, which is conservative for short stiffener columns (≈ 1.2% by volume):

Steel weight = col volume × 94 = 1.51 × 94 = 141.94 kg

Note: 94 kg/m³ is a rule-of-thumb for boundary-wall stiffener columns. Real structural design (especially for seismic Zone IV / V cities — Delhi, Guwahati, Srinagar) may revise this ±30 %. For walls with the canopy load of a gate-pier or a load-bearing function, get a designer to set steel.

9 + 10. Plaster + paint — Items 13.1.2 + 13.46.1

Both faces of the wall, total plaster area = 2 × (length × (height + plinth band)) − gate-opening deductions. IS 1200 Part 12 says: openings ≤ 0.5 m² are ignored; openings 0.5 – 3 m² deduct one face; openings > 3 m² deduct both faces. Our 6.3 m² gate opening deducts both faces:

Plaster area per face = 30 × (1.8 + 0.30) − 6.3 = 56.7 m²
Total (both faces) = 2 × 56.7 = 113.4 m²

Paint area equals plaster area (single coat over plaster, two coats over primer per DSR 13.46.1).

11. Plinth protection — Item 4.17

50 mm CC band, 500 mm wide along the outer wall face for 30 m run:

Plinth protection area = 30 × 0.5 = 15.0 m²

What This Quick Estimate Excludes

The 11 items above cover the boundary wall itself. Six common additions are typically quoted separately on real projects:

1. Gate pillars — heavier than stiffener columns (typically 230 × 450 mm RCC, designed for the steel-gate's swing load). Quote DSR 5.2.2 separately with their own volume + steel.
2. The steel main gate + wicket-gate panel — Chapter 10 of DSR Vol 2 (MS sheet, angle iron, hinges, locks).
3. Decorative grills / concertina-wire topping — DSR 10.X steel work or specific MS-grille rates.
4. Foundation in rock — swap 2.8.1 for 2.9.1 (ordinary rock) or 2.9.2 (hard rock with blasting).
5. Carriage beyond 50 m lead — DSR Chapter 1 carriage rates per km.
6. Coastal-zone anti-corrosive coating — for sites within 1 km of salt-spray (Mumbai sea-front, Visakhapatnam, coastal Kerala), add IS 13620 anti-corrosive treatment to reinforcement.

Common Estimation Mistakes

• Forgetting the corner-column at the end — for an L-shaped or U-shaped wall, the corner gets a column even if spacing math doesn't put one there. Add 1 extra column per external corner.
• Not deducting gate-opening volume from brickwork — this is IS 1200 Part 3 mandatory. Otherwise you over-bill brick by 1-2 m³.
• Using single-face plaster for boundary walls — the IS standard is both faces (interior is the visible-from-inside-the-plot face). Walls visible from only one side (e.g., shared compound walls behind blank-brick neighbours) can be single-faced, but this is rare.
• Skipping plinth protection — this 500 mm CC band prevents rain splash from spalling the plaster. Routinely omitted in low-quality estimates and a frequent post-handover defect.
• Underestimating steel because column height is "small" — the IS 13920 minimum steel requirement is 0.8 % regardless of column section. A 230 × 230 mm column = 6 nos 10 mm bars minimum + lateral ties — that's already ≈ 9 kg/m. Over 2.65 m height that's 24 kg per column × 11 = 264 kg total, not 142 kg. The 94 kg/m³ rule-of-thumb is therefore aggressive; for tendering, verify with structural design.

What Changes for a Different Wall

• Half-brick (115 mm) wall — switch parameter to 115 mm. Brick volume halves; column section reduces to 115 mm but minimum-column code (IS 13920) requires 150 × 150 mm minimum for any structural column, so swap to 150 × 230 mm half-brick + RCC band combination instead.
• Higher wall (e.g., 2.4 m for industrial security) — stiffener columns become structurally critical, increase steel to 110-120 kg/m³.
• No gate (continuous wall, e.g., a back-side garden wall) — set gate count to 0. Brickwork and plaster increase accordingly.
• State-PWD instead of CPWD rates — the BOQ Builder lets you switch to Maharashtra DSR / Gujarat SOR / RJ BSR / state-specific SOR from the same input dimensions. State rates typically run 8-15 % below CPWD.

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References & Companion Reading

• IS 1200 Part 1:1992 — Earthwork measurement
• IS 1200 Part 3:1976 — Brickwork measurement (opening deductions)
• IS 1200 Part 5:1982 — Concrete measurement
• IS 456:2000 — Plain and Reinforced Concrete (concrete grades, cover, mix proportions)
• IS 1786:2008 — TMT reinforcement (Fe-500D specification)
• IS 2502:1963 — Bar bending shapes & schedule
• Handbook: Dead Loads — for the boundary wall's self-weight contribution to footing design
• CPWD DSR 2023 — full SOR with rates by item
• Material Calculator — cross-check cement / sand / aggregate per item