How to check cement bags when the truck arrives
Five checks at the truck and one way to stack the bags: what IS 269 says every bag must show, what the three-month line really means, and how IS 4082 wants cement stored on site.
By Bulan Sarkar · Updated
Read the batch mark first. IS 269:2015 makes every OPC bag show the week, month and year of packing and a best-before date three months later; cement older than that is retested before use, not thrown away. Then check the type and grade, the 50 kg net quantity, and press each bag for hard lumps. Stack accepted bags on planks 150 to 200 mm off the floor, at most 10 high and 600 mm clear of the walls (IS 4082:1996).
Source: Requirements of Ordinary Portland Cement as per IS 269-2015 (RDSO / CAMTECH pamphlet, Indian Railways, Feb 2022), checked Oct 2026.
What every bag has to say
IS 269:2015 lists eight things each bag of ordinary Portland cement must carry, printed so they can be read and can't be rubbed off:
- the maker's name and trade mark
- the name and designation of the cement, for example OPC 43
- the net quantity in kg (50 kg unless the order says otherwise)
- the words Use No Hooks
- the batch or control unit number, as the week, month and year of packing
- a best-before date, three months from packing
- a note that cement more than three months old should be tested before use
- the maker's address
A bag missing the packing week or the best-before date is the one to send back first. Without them, you can't tell how old the cement is.
After three months: retest before use
The pamphlet's summary of IS 269 is plain about it. Bagged cement held locally, for instance by a dealer, for more than three months after it was tested is re-tested before use. It's rejected only if it then fails. That's why the bag says best before and not use by.
Cement spoils from damp. Moisture from the air sets it slowly inside the bag, and set cement has lost strength it won't get back. A dry bag at ten weeks can be better than a bag at four weeks that sat in a leaking shop. Check the condition of the bag as well as its date.
Soft lumps and hard lumps
Bags at the bottom of a tall stack get squeezed. IS 4082 calls this warehouse pack: the cement feels firm, but rolling the bag on the floor breaks it up again. It's harmless.
A lump that stays hard when you press it between your fingers is different. That cement has taken on moisture and started to set. IS 4082 says lumped bags should be removed and disposed of. Press each bag along its length as it comes off the truck; it takes a couple of seconds a bag.
Stacking the bags the way IS 4082 asks
- A dry, leakproof shed with as few windows as possible, doors kept shut.
- Bags on wooden planks, 150 to 200 mm clear of the floor. The floor below can be lean concrete or two layers of dry bricks on firm earth.
- At least 600 mm clear between the stacks and the outside walls, all round.
- No more than 10 bags high, and no wider than four bag lengths or 3 m. Above 8 high, lay the layers lengthwise and crosswise in turn so the stack holds together.
- Bags packed close together, so air moves round them as little as possible.
- A label on each stack with the date the cement arrived. Use it in the order it came in.
- Different cements in separate stacks, and gunny, paper and polythene bags apart.
- In the monsoon, or for long storage, wrap the whole stack in polythene that closes over the top.
Worked examples
1. Old stock at a discount
- Dealer offers 200 bags packed in week 30 of 2026 (20 to 26 July)
- Best before: three months on, 20 to 26 October 2026
- Your plaster job uses about 40 bags a week from 12 October
- By 26 October you'll have used about 80 bags; the other 120 pass the line
Result: Take only what you'll use before the best-before date, or ask for newer stock. The remaining 120 bags would need a retest before use.
2. A stack plan for 120 bags
- Highest stack: 10 bags, so 120 bags = 12 bags in each layer
- Layer of 12 = 3 bags across × 4 bags along, inside the 4-bag-length width limit
- Above 8 high, turn the top layers crosswise
- Leave 600 mm clear to the outside walls; planks 150 to 200 mm off the floor
Result: One stack of 10 layers fits a small store room. Label it with the delivery date.
3. Weighing a few bags
- Five bags on a platform scale: 49.8, 50.1, 49.9, 50.2, 49.7 kg
- Total: 249.7 kg; average 49.94 kg against 50 kg marked
- Every bag is within 0.3 kg of 50
Result: Nothing to raise. A run of bags that all come in well short of 50 kg on a checked scale is worth showing the dealer.
Tips and tricks
- Check the dates on a few bags from the back of the truck too, not only the ones by the tailgate.
- Ask the dealer for the packing week before the truck leaves the shop. It saves a wasted trip.
- Order slab cement a day or two before the pour, and masonry and plaster cement weekly, so no bag waits long on site.
- Never stack cement straight on a fresh concrete floor or against an outside wall. Both carry damp.
- Keep the delivery challan with the batch numbers. If a question about strength comes up later, it tells you which lot went where.
What we would do
We'd ask the dealer for cement packed within the last few weeks, check the batch mark and press for lumps on every bag as it comes off, and weigh five bags on the first delivery. On site, we'd build one plank platform clear of the walls, stack no more than 10 high, label the stack with the delivery date and use it oldest first. Anything near the three-month line goes into plaster or a retest, not a slab.
Frequently asked questions
How do I find the manufacturing date on a cement bag?
Can I use cement after the best-before date?
How high can cement bags be stacked?
Is a hard cement bag always bad?
Sources and date checked
- Requirements of Ordinary Portland Cement as per IS 269-2015, RDSO / CAMTECH pamphlet CAMTECH/C/2022/OPC/1.0 (bag marking, retest after three months). Checked Oct 2026.
- IS 4082:1996, Stacking and Storage of Construction Materials at Site, clause 4.2 (cement) and Fig. 1. Checked Oct 2026.
This guide covers checking and storing cement. The cement type and grade for each part of the house come from your engineer, and whether old or retested cement can go into structural work is the engineer's call.