How Do You Choose the Right Concrete Pump Size and Type for a Job?
By PumpX Team ·
Choosing the right pump is mostly about three things: how far the concrete has to travel, how the pump gets to the site, and how much you are pouring. We have not seen the original thread's details, so here is a general guide you can adapt to your job.
The main pump types
| Type | Best for | Strengths | Limits |
|---|---|---|---|
| Boom pump (truck-mounted) | Slabs, footings, multi-storey work, large pours | Fast setup, long reach, big output | Needs access for a heavy truck and outriggers; overhead obstacles matter |
| Line pump (trailer or truck, with hoses) | Backyards, tight sites, small pours, basements | Gets to places trucks cannot, lower cost | More labour handling hoses, slower |
| Trailer pump (stationary) | Long horizontal runs, high rise using pipeline, remote sites | Flexible, can feed placing booms or long pipes | Needs a tow vehicle and setup time |
For more on the basics, see what is a line pump and our concrete pump vs chute vs wheelbarrow comparison.
Step 1: Measure the reach
Work out the furthest point you need to place from where the pump can stand. Measure horizontal distance and any height difference, and add margin for obstacles. Boom pumps are described by their reach in metres, but their usable reach depends on how the boom folds and what is overhead. Ask the pump company what the machine can actually do at your site.
Rules of thumb vary, so rely on the supplier's rated reach rather than the headline number. If you are unsure, tell them the layout and let them confirm.
Step 2: Check access
A big boom truck needs:
- A road or driveway wide and strong enough for the truck's weight
- Overhead clearance, with no low trees, wires or awnings
- Room for outriggers to spread, or a plan if the space is limited
- Firm, level ground at the setup point, since outrigger loads are concentrated
Powerlines are a serious hazard. Never assume you can work near them, and read unsafe pump operation hazards. If a boom truck cannot get in, a line pump may still do the job. Examples include pumping between two houses and getting concrete from the street to the backyard.
Step 3: Think about volume and speed
Small pours (a path or a small slab) may only need a line pump, while larger ones benefit from a boom's speed because the concrete trucks do not sit waiting. Remember concrete has a limited working time, so match the pump's output to the pour and the crew's finishing capacity. A fast pump with too few finishers just creates problems.
Step 4: Mix and aggregate
The pump has to move the mix you ordered. Max aggregate size, slump and mix design affect pumpability and line size. Discuss it with your concrete supplier and pump operator. See what makes concrete pumpable.
Step 5: Ground and structure
If you are pumping onto a suspended slab or near basements, boom loads and outrigger pressure can matter. Check with your engineer if the setup is near excavations, services or retaining walls.
Questions to ask the pump company
- What machine and reach would you send for this site?
- Do you need to see photos or visit the site?
- What are the access and setup requirements?
- What is the minimum hire, and how are extra metres or waiting time charged?
- What do you need from us, such as washout area or a spotter?
Check what's included in concrete pump hire and how to book a concrete pump truck for practical booking steps.
If you are buying rather than hiring
Match the machine to the work you do most of the time, not the biggest job you can imagine. Our buying guide and the machine library help compare specs.
Worked example
Imagine a house slab where the truck can park on the street, the furthest corner is about 25 metres from where the pump can stand, and a tree overhangs the frontage. A boom pump might manage the reach but not the tree, so the operator may need to set up in a different spot or you may need a line pump with hose. If instead the block is wide open and there is a mid-size boom available, it may place the slab in a fraction of the time. The point is that none of these facts show up in the pour volume, which is why the pump company needs the full site picture.
Key takeaways
- Choose the pump based on reach, access and pour volume.
- Boom pumps are quick for large pours, line pumps win on tight access.
- Measure the furthest point and tell the pump company about obstacles and overhead hazards.
- Check ground strength and outrigger room before the day.
- Confirm the mix suits pumping with your supplier.
Find pump companies in your area at /services or estimate costs with the rate calculator on PumpX.
Original question on Reddit: r/Construction: Concrete pump advice