Concrete Cost Calculator

Concrete Cost Analysis: Bagged Concrete vs Ready-Mix Truck

Choosing between hand-mixing pre-packaged bags and scheduling a transit mixer truck requires evaluating material price, delivery surcharges, short-load minimums, and equipment rental.

1Cost Estimating Formulas

Bagged Material Cost: Bags Needed × Price Per Bag ($6.25)

Truck Base Cost: Cubic Yards × Yard Rate ($145/yd³)

Short-Load Surcharge: +$150 to $200 (if under 5 yd³)

Professional Installed Slab: Sq Footage × $8.00 to $12.00/sq ft

Sub-base Gravel Cost: (Sq Ft × Depth ft ÷ 27) × 1.4 tons × $45/ton

Note: Bagged concrete at $6.25 per 80 lb bag equals $281.25 per cubic yard (45 bags × $6.25). Ready-mix concrete costs roughly $145 per yard—almost 50% cheaper per unit volume—once short-load minimums are cleared.

2Cost Comparison: 14' × 20' Patio (3.80 Cubic Yards w/ Waste)

Volume Requirement: 280 sq ft × 4" = 93.3 cu ft = 3.80 yd³ (with 10% buffer).
Option A (Pre-Mix Bags): 171 bags of 80 lb @ $6.25 = $1,068.75 in concrete mix alone (+ $80 drum mixer rental). Total: ~$1,148.
Option B (Ready-Mix Truck): 3.80 yd³ @ $145/yd³ = $551.00 + $100 small-load fee = $651.00 delivered.
Direct Material Savings: $497.00 saved by choosing ready-mix delivery over bags.
Labor Savings: Eliminates moving and mixing 13,680 lbs of dry bags by hand.

The 3.5 Yard Rule: If your project volume is 3.5 cubic yards or greater, scheduling a ready-mix truck will almost always save hundreds of dollars while delivering superior structural concrete.

Volume Cost Comparison Matrix (Bags vs Ready-Mix Delivery)

Detailed pricing matrix showing estimated costs for pre-mix bags (@ $6.25/bag) vs ready-mix transit mixer truck delivery (@ $145/yd³ + short-load fees).

Volume (yd³)	80 lb Bags Needed	Bagged Cost (@ $6.25)	Ready-Mix Base (@ $145)	Estimated Delivery Fee	Total Ready-Mix Cost	Cost Advantage
0.50 yd³	25 bags	$156.25	$72.50	$200.00 (Min Fee)	$272.50	Bags Save $116
1.00 yd³	50 bags	$312.50	$145.00	$175.00	$320.00	Bags Save $8 (Tie)
2.00 yd³	99 bags	$618.75	$290.00	$150.00	$440.00	Truck Saves $178
3.00 yd³	149 bags	$931.25	$435.00	$100.00	$535.00	Truck Saves $396
3.50 yd³	174 bags	$1,087.50	$507.50	$50.00	$557.50	Truck Saves $530
5.00 yd³	248 bags	$1,550.00	$725.00	$0.00 (No Fee)	$725.00	Truck Saves $825
8.00 yd³ (Full Truck)	396 bags	$2,475.00	$1,160.00	$0.00	$1,160.00	Truck Saves $1,315

Installed Concrete Slab Pricing Breakdown ($/Sq Ft)

When hiring a general contractor or concrete masonry subcontractor, full installation typically ranges between $6.00 and $12.00 per square foot for standard broom-finished flatwork.

1. Excavation & Grading

$1.50 – $3.00 / sq ft

Skid steer excavation, soil removal, laser leveling, and plate compaction.

2. Base & Formwork

$1.50 – $2.50 / sq ft

4" compacted crushed stone subbase, 2x4 form stakes, and #4 rebar grid.

3. Ready-Mix Concrete

$2.00 – $3.50 / sq ft

4000 PSI ready-mix concrete, delivery, fuel surcharges, and short-load fees.

4. Place & Finish Labor

$2.50 – $4.50 / sq ft

Pouring, screeding, bull floating, hand edging, control joints, and broom finish.

Frequently Asked Questions

What is the average cost of ready-mix concrete per cubic yard?

In the United States, ready-mix concrete currently averages between $125 and $165 per cubic yard for standard 3000 to 4000 PSI residential mixes. High-strength commercial mixes (4500 to 5000 PSI), fiber additives, calcium accelerators (for cold weather), and retarders typically add $5 to $15 per cubic yard.

What is a short-load fee for ready-mix concrete delivery?

Most ready-mix concrete batch plants operate trucks with 9 to 11 cubic yard capacity. If you order less than their minimum batch size (usually 4 to 6 cubic yards), dispatch charges a "short-load fee" ranging from $120 to $200 per order (or a tiered penalty of $20 to $40 for every yard below their minimum) to cover the driver and fuel costs.

How much does a 10x10 concrete slab cost DIY vs professionally hired?

A 10x10 slab (1.23 cubic yards at 4" thick) costs approximately $350 to $500 in materials if completed DIY (56 bags of 80 lb concrete @ $6.25, gravel subbase, 2x4 forms, rebar grid, and expansion joint). Hiring a licensed concrete contractor to excavate, compact gravel, tie rebar, pour, float, and broom-finish costs between $800 and $1,400 ($8 to $14 per square foot total installed).

Are pre-mix bags cheaper than ordering a ready-mix truck?

For small projects under 2.5 to 3.0 cubic yards (such as fence posts, small air conditioner pads, and walkway repairs), pre-mix bags are significantly cheaper because you avoid ready-mix delivery surcharges and short-load fees. For projects exceeding 3.5 cubic yards (such as 12x16 patios and driveways), ready-mix trucks are not only cheaper per yard ($145 vs $280 equivalent in bags), but they also eliminate immense manual labor and prevent cold joints.

What hidden costs should I expect when ordering concrete?

Common unexpected costs include: (1) Truck waiting time penalties (typically $2 to $3 per minute if unloading takes longer than 5 to 7 minutes per yard), (2) Concrete line pump or boom pump rental ($600 to $900 minimum) if the truck cannot back up directly to forms, (3) Environmental wash-out pit fees ($40 to $75), and (4) Crushed stone gravel delivery and compactor rental ($100 to $200).

Zone Breakdown Summary