Contractor Job Estimator
Price remodels and GC work, then send a quote with no internal numbers.
Excel or Google Sheets. Best on a computer.
$29.00
BuyReady-Mix vs Bagged Concrete
A real jobsite fork: truck delivery, bagged premix, or on-site mixing — which fits volume, access, labor, and schedule
Size the pour first with the Concrete Volume Calculator, then use this page to choose how to supply those yards. Formula basics: guide. Quick lookups: chart. If a pour already failed short/long, see troubleshooting.
The Decision Fork in One Minute
Ask two questions: How many yards after waste? and Can a mixer truck reach the forms with time to place?
Ready-mix truck
- Best above ~1.5–2 yd³
- Consistent mix, fast place
- Minimum load + short-load fees
- Clock starts when it arrives
Bagged premix
- Best for small pads, posts, patches
- Exact bag count, stop anytime
- Labor + mixer + water staging
- Silica dust and bag handling
On-site mixing
- Remote / no truck access
- You control batch timing
- Highest labor; mix quality varies
- Needs mixer, water, aggregate plan
Rule: Volume picks the shortlist; access and crew size break the tie. A 3 yd³ pour with no truck access is still bags/on-site — not “wish for ready-mix.”
What Each Method Actually Costs You
Ready-mix: You buy consistency and placement speed. You also buy a minimum ticket, possible short-load charge, and hard time pressure — once the drum is on site, the crew must place, screed, and finish before the mix sets. Wrong yardage hurts more because the truck is already spinning.
Bagged: You buy control and the ability to stop. You pay in labor (dump, mix, wheel), water logistics, and dust exposure. Above a couple yards, bag count and fatigue usually beat any “saved” delivery fee.
On-site mixing (bulk cement/sand/stone or continuous mixer): You buy access when trucks cannot reach the forms. Mix design quality and batching discipline become your problem. Remote sites, hillside pours, and indoor patches often land here.
Volume Thresholds (After Waste)
| Order size (with waste) | Usually choose | Why |
|---|---|---|
| Under ~0.5 yd³ | Bags | Truck minimums dominate; patches/posts |
| ~0.5–1.5 yd³ | Bags or short-load ready-mix | Compare labor hours vs short-load fee |
| ~1.5–2+ yd³ | Ready-mix if accessible | Faster, more consistent, less crew burnout |
| Any size, no truck access | Bags or on-site mix | Access overrides volume |
Run net volume in the calculator, add waste, then apply this table. The guide’s “~1–1.5 yd³” crossover is a starting heuristic — not a law when the driveway cannot take a truck.
Access, Schedule, and Crew
Choose ready-mix when: The chute or pump can reach; you have a full crew ready; the pour is continuous (slab/footing) and you cannot afford mid-pour mixing delays.
Choose bags when: The pour is small or interruptible; you need precise small batches; the site is a backyard with no truck path; you are filling sonotubes or fence posts over hours.
Choose on-site mixing when: Access blocks both trucks and practical bag staging; you already have a mixer and aggregate plan; remote work makes delivery fees absurd.
Time pressure: Ready-mix does not wait for you to finish setting forms. Forms, grade, and rebar inspection must be done before the truck is called — not after.
Quick Picker
| Situation | Method |
|---|---|
| 10′ × 12′ × 4″ patio (~1.6 yd³ w/ waste), driveway access | Ready-mix |
| Four fence posts, weekend job | Bags |
| 2 yd³ garage slab, alley too tight for truck | Bags (crew) or pump/trailer mix if available |
| Remote cabin pier footings | On-site mix or staged bags |
| Last pour came up short mid-slab | Fix volume first (troubleshoot), then re-pick method |
Method Chosen — Confirm the Yards
Supply method does not fix a bad volume number. Recalc, add waste, then order.
Any trade
Checkout opens in a new tab.
PPE for Mixing and Placement
Five catalog picks for bag handling and silica protection. Masonry placement tools are a catalog gap — see note.
Gloves
Mechanix Wear Hi-Viz Work Gloves
- Bag handling grip
- Hi-viz on busy sites
- Cement off bare skin
Klein Tools 60171 Safety Glasses
- Mixing and finishing splash
- Anti-fog pair
- Keep a spare
3M 6502QL Half Facepiece Respirator
- Silica when dumping bags
- Quick latch
- Use correct filters
Inspire Black Nitrile Gloves 6 Mil
- Under-glove for wet cement
- Bag mixing cleanup
- Disposable convenience
DEWALT 4.5″ Angle Grinder DWE402
- Form trim / rebar cut
- Pour-day formwork
- Correct disc + eye PPE
As an Amazon Associate, TestTalkHQ earns from qualifying purchases. Catalog gap: no ready-mix booking tools (obviously), concrete mixer, wheelbarrow, bull float, or premix bags in the CSV — PPE/cutting tools only from catalog.
Frequently Asked Questions
Is 1.5 yd³ always a ready-mix job?
Only if a truck can reach and the short-load fee still beats bag labor. Access can force bags even at 2+ yd³.
Can I mix ready-mix and bags in one slab?
Avoid it. Different mixes and timing create cold joints. Pick one supply method for a continuous pour.
Does the guide already cover this?
The guide has a short bags-vs-ready-mix note. This page is the full decision fork including access, crew, and on-site mixing.