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Foundation & piling · H-piles · rock sockets · bored piles

Rock sets the length.
Steel reconciles pile by pile.

H-piles are ordered to provisional lengths, and the real length is only known once the rig reaches rock. Too short means a splice, too long means a cut-off, and both move your steel quantities. materialpro joins the top-up requisition, quote comparison, delivery check and offcut return into one trail.

  • H-piles
  • Rock-socketed / bored piles
  • Hand-dug caissons
  • Mini-piles

Pile plan

Sample data for illustration

  • Ordered
  • Delivered
  • Driven
  • Tested
  • Splice needed
C2-120.0 → 24.5 m+0.57 tRock head 4.5 m deeper than allowed: splice needed, roughly 0.57 t more steel to buy.

Four pile types, four ways to buy

What you buy and how you count it depends on the pile

One site often runs several pile types at once. What is bought, how it is measured and where it goes wrong differ for each.

H-piles

Driven, or pre-bored then driven

What is bought
Steel H-sections, splice plates and weld consumables, pile shoes
How it is counted
By tonne and metre; ordered to provisional length, adjusted to as-driven length
Where it leaks
Rock head deeper than expected means a splice and a top-up order; shallower means a cut-off whose offcut nobody follows up

Rock-socketed / bored piles

Drilled, caged and tremie-concreted

What is bought
Steel casing, reinforcement cages, tremie concrete
How it is counted
Concrete by m³ and truck load; rebar by tonne; casing by metre
Where it leaks
Concrete poured exceeds theoretical volume and the truck tickets do not tie to pile numbers

Hand-dug caissons

Excavated and lined in stages

What is bought
Rebar, concrete, lining materials
How it is counted
Concrete by m³; depth recorded lift by lift
Where it leaks
Depth changes lift by lift, so rebar and concrete must follow each caisson's actual depth

Mini-piles

Small-diameter bored piles for slopes and underpinning

What is bought
Steel casing, bars or tubes, grout
How it is counted
By metre and number; grout by bag or m³
Where it leaks
Many piles, little material each, scattered deliveries and easy omissions

Pile plan

One pile driven longer. How much extra steel?

On a hillside plot rock is shallow uphill and deep downhill. Read each pile's provisional and actual length, and the steel a splice or cut-off adds or returns. Select any pile.

  • Splice needed

Select a status to show only those piles · Sample data for illustration

Pile cap C2

C2-1Driven

H-pile 305×305 · 126 kg/m (sample section)

20.024.5Provisional 20.0 / As driven 24.5
Provisional length
20.0m
As-driven length
24.5m+4.5
Steel change
+0.57t
  • Provisional
  • As driven
  • Splice

Rock head 4.5 m deeper than allowed: splice needed, roughly 0.57 t more steel to buy.

Handled in materialpro

  • RequisitionSite raises the splice steel from the piling record
  • RFQQuote several suppliers and compare side by side
  • Purchase orderApproved through your own workflow, then issued

Reconciliation of driven piles

Driven
19
Provisional total
340.0m
As-driven total
363.0m
Length difference
+23.0m
Steel change
+2.90t

15 more piles are not yet driven; their steel is ordered to provisional length.

The plan is an illustration of how a change in pile length triggers a top-up. Pile positions, lengths and status come from your piling records; requisitions, quotes, POs, receiving and stock are handled in materialpro.

Rock head to invoice

How a length change gets all the way through

One rock-head surprise, from the site record to payment: a document at every step and someone approving it.

  1. 1

    Piling record

    Piling record

    The pile reaches rock or its set criterion and the foreman records pile number, date and as-driven length. Longer than provisional means a splice.

    From the site record

  2. 2

    Top-up requisition

    Material requisition

    Site staff raise the splice steel from their phone, noting the pile number and purpose.

    Handled in materialpro · Requisitions (mobile app)

  3. 3

    Compare quotes

    Quotation

    Ask several steel suppliers to quote. AI helps read quotation PDFs or photos, and price and lead time sit side by side.

    Handled in materialpro · RFQ · quote comparison

  4. 4

    Issue the PO

    Purchase order

    The chosen quote becomes a purchase order, approved through the workflow your company has set up.

    Handled in materialpro · Purchase orders · approvals

  5. 5

    Receive on the hillside

    Delivery note

    Steel arrives; photograph the delivery note on the spot. AI reads items and quantities, matches the PO and lists shortfalls and variances.

    Handled in materialpro · Delivery check

  6. 6

    Invoice match

    Invoice

    The supplier invoice is checked against the PO and the receiving record. Price and quantity variances wait for your review before payment.

    Handled in materialpro · Three-way invoice match

Hillside site realities

Six things you hear on a piling site

  • “We ordered 18 m H-piles, then one came out at 23 m. Now the extra steel needs new quotes.”

    A top-up goes through the same requisition, RFQ and PO route, so it is documented and approved.

    In materialpro · Requisition · RFQ · PO

  • “There is one unloading spot on the slope. The truck is here, nobody has time to count piece by piece.”

    Photograph the delivery note on the spot. AI reads items and quantities, matches the PO and lists shortfalls and variances.

    In materialpro · Delivery check

  • “The offcuts are stacked in a corner, and when the next pile needs them, they are nowhere to be found.”

    Offcuts go into stock. A site or yard can each be a warehouse, and a transfer to another site is on the record too.

    In materialpro · Multi-warehouse inventory

  • “Mills send quotes as PDFs and photos, every format different. Comparing takes all night.”

    Upload the quotation PDF or photo; AI helps read items and prices, and the comparison can be turned straight into a PO.

    In materialpro · Quote comparison

  • “The invoice arrives and the tonnage does not match what we received.”

    Invoices are matched against the PO and receiving record; price and quantity variances wait for your review before payment.

    In materialpro · Three-way invoice match

  • “Black rainstorm, typhoon, trucks stop, and the whole piling programme shifts.”

    Expected delivery dates sit in one calendar, so when the programme moves it is easy to see which loads are affected.

    In materialpro · Delivery calendar

Foundation terms

The words used on a piling site

Piling, bored piles and caissons each have their own vocabulary. These are the terms you meet most when buying and receiving.

Steel H-pile
A steel pile with an H cross-section, driven by a piling rig to rock or to its set criterion.
工字樁(H樁)
Pre-bored H-pile
A hole is drilled through rock or obstructions first, then the H-pile is placed and driven home.
預鑽孔工字樁
Rock-socketed pile
The pile toe is socketed into rock for bearing, so the length follows rock head.
嵌岩樁
Bored pile
A cast-in-place pile: drill, lower the reinforcement cage, place tremie concrete.
鑽孔樁
Hand-dug caisson
Excavated and lined in stages, then reinforced and concreted.
挖孔樁
Mini-pile / micropile
A small-diameter drilled pile of bar or tube plus grout, for tight space or underpinning.
微型樁
Steel casing
A steel tube that supports the bore wall while drilling; some is withdrawn, some is left in.
鋼套管
Tremie concrete
Concrete placed from the bottom of the bore through a pipe, under water or slurry.
水下混凝土
Rock head
The top of sound rock. It varies pile by pile and can differ from the ground investigation.
岩面
Splice / cut-off
Welding on extra length when a pile is too short; cutting away the excess when it is too long. Offcuts must be booked.
接樁/截樁
Piling record
The record of each pile as driven: number, date, length and set.
打樁記錄
Pile load test
Loading a completed pile to confirm it carries what it should.
樁載荷測試

FAQ

What piling contractors ask

Pile lengths are not final. How do we order the steel?

Most sites order to provisional length first. The PO is raised to that length; if a pile needs a splice after driving, a separate requisition and PO are raised, so the two are recorded apart and reconcile cleanly.

Does materialpro replace piling records or load test reports?

No. Piling records, test reports and anything you must submit stay with you under your contract and the regulations. materialpro handles requisitions, quotes, POs, receiving, stock and invoices for the materials.

H-piles are bought by the tonne but the delivery note shows metres. How does that match?

After you photograph the delivery note, AI reads items, quantities and units and matches them to the PO. Converting between tonnes and metres is for your team to verify; materialpro does not convert units automatically at present.

Can we record offcuts, or piles moved between two sites?

Yes. A site or a yard can each be a warehouse. Offcuts are booked into stock, and moving them to another site is a transfer, with every movement in the stock ledger.

What can site staff do on their phones?

The mobile app lets them raise material requisitions. Delivery notes are photographed on site and uploaded for checking, and approvals are followed up on the platform.

Reconcile the top-up before the last pile is in

Book a demo and we will walk one top-up through, from requisition to invoice, using your pile types and suppliers.