Kay-Lit Engineering Consultancy

The client blamed the box house. The real problem? Poorly constructed box gutters.
With the right materials, proper detailing, and quality workmanship, box gutters don't leak, they last.

Home gym becomes a death sentence
🇺🇬 ❤️❤️

For years on site, we’ve been ordering ¾ aggregate because that’s what everyone uses, without ever asking why.
The answer is in Eurocode 2 (EN 1992-1-1, Clause 8.2 under placing and compaction of concrete.
The code limits the maximum aggregate size to ¾ of the minimum clear spacing between reinforcement bars or ¾ of the nominal concrete cover.
If the stones are bigger than the space meant for concrete to flow, they block, cause honeycombing, and weaken bond and durability.
So that familiar “¾” at the quarry isn’t a market rule, it’s geometry driven by reinforcement detailing and cover requirements.

❤️❤️ 🇺🇬

For years on site, we’ve been ordering ¾ aggregate because that’s what everyone uses, without ever asking why.
The answer is in Eurocode 2 (EN 1992-1-1, Clause 8.2 under placing and compaction of concrete.
The code limits the maximum aggregate size to ¾ of the minimum clear spacing between reinforcement bars or ¾ of the nominal concrete cover.
If the stones are bigger than the space meant for concrete to flow, they block, cause honeycombing, and weaken bond and durability.
So that familiar “¾” at the quarry isn’t a market rule, it’s geometry driven by reinforcement detailing and cover requirements.

This may look funny but it’s a common and dangerous practice.
Residential upper floors (Eurocode Category A) are designed for about 2.0 kN/m², not gym use.
Home gyms can impose 4 to 5 kN/m² plus dynamic impact from treadmills and weights.
A floor designed for a sofa can fail under exercise loads.
If it wasn’t designed for it, keep the gym on the ground floor.

No drawings, no concrete or reinforcement records.
So before building up, we verified the structure’s capacity and load path.