---
title: "Material wastage standard and value engineering"
subject: "Construction Management"
chapter: 3
key: "semester_8/construction_management:wastage-standard-ve"
source: https://www.bctengineer.com/q/semester_8/construction_management/wastage-standard-ve
site: BCT Engineering
---

# Material wastage standard and value engineering

Construction Management · Chapter 3: Planning Construction Material

- Asked in: 2071 Bhadra, 6 marks
- Video: [Wastage Limit in Construction Materials and How to Control Wastage & Cost at Site with Calculation](https://www.youtube.com/watch?v=XPUbOR-5oY0) — Factual Civil Engineering
- Answer checked by Claude Opus 5.5 (high effort) on 2026-10-14
- Page: https://www.bctengineer.com/q/semester_8/construction_management/wastage-standard-ve
- Whole chapter: https://www.bctengineer.com/md/semester_8/construction_management/chapter-3

## Question

What is material wastage standard? Describe the application of value engineering in procurement of material.

## Short answer

A wastage standard is the permitted percentage loss (e.g., cement 2-3%, steel 3-5%) used in estimates; excess is investigated. Value engineering in procurement: ABC rank materials, define required function, generate alternatives, evaluate life-cycle cost, and select the most cost-effective option to reduce waste and over-specification.

## Answer

#### Material wastage standard
A wastage standard is the permitted percentage loss of a material during handling, storage, cutting and use, allowed for in estimates and rate analysis. Consumption above the standard is treated as excess wastage and must be investigated. Typical allowances: cement 2-3%, sand 5-10%, aggregate 5-10%, bricks 5%, steel bars 3-5% (cutting loss), tiles 5-10%, paint 5%, concrete 2-3%.

Uses: fixing the quantity to be purchased, comparing actual with standard consumption to judge site efficiency, and controlling cost.

#### Application of value engineering in material procurement
VE studies the function of each material and obtains the same function at the lowest total cost:
1. Rank materials by ABC analysis and apply VE to the high-value (A) items.
2. Define the function and required specification of each item; remove unnecessary requirements (over-specification).
3. Generate alternatives: local or substitute materials, different grades, standard sizes.
4. Evaluate the alternatives on cost, quality, durability, availability and life-cycle cost.
5. Use bulk or contract purchase, suppliers near the site, and reduced transport and handling.
6. Choose the best-value alternative, write it into the purchase order, and review the savings.

Example: using PPC for plain concrete work, or block masonry instead of brick masonry, where the function and strength are the same but the cost and wastage are lower.

## Check yourself

The answer's key points as multiple-choice questions, with the correct option and why.

1. A material wastage standard is:
   A. the permitted percentage of loss in handling, storage, cutting and use, taken in estimates
   B. the maximum price of a material
   C. the total amount stored
   D. the legal fine for waste
   Answer: A. Consumption above the standard is excess wastage and is investigated. (Key point: Wastage standard)

2. One use of wastage standards is to:
   A. increase waste allowance without limit
   B. compare actual with standard consumption to judge site efficiency
   C. choose the supplier
   D. set labour wages
   Answer: B. They help fix purchase quantities and control cost by comparing actual with standard consumption. (Key point: Use of standard)

3. Which fits VE in material procurement?
   A. Buy the highest grade for all items
   B. Rank items by ABC and apply VE to A items, seeking equal function at lower cost
   C. Ignore alternatives
   D. Choose the supplier farthest from site
   Answer: B. VE concentrates on high-value items and evaluates alternatives on cost, quality, durability and life-cycle cost. (Key point: VE in procurement)

## Related in Construction Management

- [Value engineering in material procurement](https://www.bctengineer.com/question.md?key=semester_8%2Fconstruction_management%3Avalue-engineering-procurement) — Construction Management, chapter 3, asked 3×
- [Reasons for material wastage and prevention](https://www.bctengineer.com/question.md?key=semester_8%2Fconstruction_management%3Amaterial-wastage-reasons) — Construction Management, chapter 3
- [Material provisioning (procurement) process](https://www.bctengineer.com/question.md?key=semester_8%2Fconstruction_management%3Amaterial-provisioning-process) — Construction Management, chapter 3, asked 4×
- [ABC graph and value engineering of materials](https://www.bctengineer.com/question.md?key=semester_8%2Fconstruction_management%3Aabc-graph-value-engineering) — Construction Management, chapter 3

## Related in other subjects

- [Engineering surveying; two-way principle application](https://www.bctengineer.com/question.md?key=semester_3%2Fsurveying_i%3Aengineering-surveying-two-way-angle) — Surveying I, chapter 1