Build Quantities

BuildQuantities author

Saleem Sial

Research and editorial owner

Saleem Sial is the research and editorial owner for BuildQuantities articles. He manages page briefs, source records, drafting direction, worked examples, metadata, internal links, and editorial updates.

Editorial responsibilities

Saleem prepares and maintains the editorial record for the pages credited to him. This includes the page purpose, source list, examples, content structure, metadata, internal links, and meaningful updates.

Topics covered

  • Construction quantity calculators
  • Material measurement guides
  • Gravel and sand reference content
  • Source and metadata review

Review scope

Authorship identifies editorial responsibility for the page. Technical review is recorded separately and remains pending where an article says so.

Formula checks, material claims, project requirements, and construction safety can require a qualified reviewer for the stated scope. Each article shows its current technical-review status beside the byline.

Corrections and disclosures

Confirmed factual, source, attribution, calculation, or metadata issues follow the BuildQuantities corrections process. Advertising, affiliate, supplier, or sponsor relationships will be disclosed on the affected page when applicable.

Current work

Pages by Saleem Sial

These calculators and articles identify Saleem as their research and editorial owner.

Calculator · Gravel

Gravel Calculator: Volume, Yards and Weight

Calculate gravel area and measured volume in metric or imperial units, with separate optional allowance and supplier-density mass stages.

Use Gravel Calculator: Volume, Yards and Weight
Calculator · Sand

Sand Calculator: Volume, Weight and Bags

Calculate sand volume from area and depth, then estimate weight from supplier density or bags from the manufacturer's volume yield.

Use Sand Calculator: Volume, Weight and Bags
A measured excavation beside a loose soil stockpile, loaded dump truck, and quantity record table.
Blog · Earthwork & Drainage

Bank vs Loose Volume: Excavated Soil and Swell

Convert bank volume to loose excavated volume, calculate soil swell, check a project factor, and keep truck, stockpile, and compacted quantities separate.

Read Bank vs Loose Volume: Excavated Soil and Swell
Example trench cross-section showing foundation, bedding, haunch, primary backfill, secondary initial backfill, pipe crown, springline, and final backfill.
Blog · Earthwork & Drainage

Bedding, Haunch, Pipe Zone and Final Backfill

Identify bedding, haunch, pipe-zone, initial-backfill, and final-backfill limits, then calculate each trench material zone from the project detail.

Read Bedding, Haunch, Pipe Zone and Final Backfill
Trench material ordering workflow showing measured space, material-state conversion, supplier units, and commercial rounding.
Blog · Earthwork & Drainage

Convert Trench Volume into an Order Quantity

Convert trench volume into cubic yards, tonnes, bags, or loads using the correct material state, supplier density, allowance, and order increment.

Read Convert Trench Volume into an Order Quantity
Two supplier quote worksheets compared with gravel samples, delivery, fee, related-work, route, and calculator symbols.
Blog · Gravel

Gravel Cost Guide: Build a Delivered Estimate

Estimate total gravel project cost from measured quantity, current supplier pricing, delivery, fees, tax, equipment, and related materials.

Read Gravel Cost Guide: Build a Delivered Estimate
Four equal rectangular plots with progressively deeper gravel layers and progressively larger gravel piles.
Blog · Gravel

Gravel Coverage Guide

See how area and installed depth control gravel coverage, with calculated tables for one cubic yard and one cubic metre.

Read Gravel Coverage Guide
A stack of aggregate sieves beside trays of progressively finer gravel particles, a caliper, and a rule.
Charts · Gravel

Gravel Size Chart and Gradation Guide

Understand gravel particle-size references, sieve openings, gradation, and why supplier labels must be checked against a project specification.

Read Gravel Size Chart and Gradation Guide
Two adjoining rectangular gravel areas measured with tapes and stakes, with a cutaway showing the gravel layer depth.
Blog · Gravel

How Much Gravel Do I Need?

Measure an area and depth, calculate gravel volume, and use supplier product data to prepare the order.

Read How Much Gravel Do I Need?
Outside caliper and circumference tape measurements on safely supported HDPE, PVC, and concrete pipe samples.
Blog · Earthwork & Drainage

Pipe Outside Diameter vs Nominal Size

Learn which pipe diameter to use for bedding and backfill quantities, how nominal size differs from OD, and how to check pipe displacement.

Read Pipe Outside Diameter vs Nominal Size
Pipe trench elevation diagram showing surface level, inside pipe invert, outside pipe bottom, bedding, formation, and full excavation depth.
Blog · Earthwork & Drainage

Trench Depth from Ground and Invert Levels

Calculate depth to pipe invert and full trench depth from surface elevation, verified pipe dimensions, bedding, and formation level.

Read Trench Depth from Ground and Invert Levels
Rectangular trench cross-section showing width, depth, and a one-foot route slice used to calculate cubic yards per linear foot.
Blog · Earthwork & Drainage

Trench Volume per Linear Foot or Metre

Calculate trench excavation per linear foot or metre with checked formulas, rate tables, section totals, examples, and limits.

Read Trench Volume per Linear Foot or Metre