Forty Children, Six Weeks, One Gable Roof: A 36 Sqm Classroom Before the Long Rains

The rainy season was six weeks away, and 40 children had no classroom

A school outside Nakuru, Kenya, had been waiting two years for a permanent classroom block. Enrolment had grown faster than the budget, and by January forty children were sharing a room designed for twenty-five. The board approved a temporary building on one condition: it had to be standing and dry before the long rains arrived in April.

What they got was not a converted box. The 6m by 6m pitched-roof quick-assembly container gave them 36 square metres of column-free space under a 15-degree gable roof, with gutters that feed a rainwater tank at the corner of the building.

Why the flat roof was rejected in the first meeting

The first quotation was for a standard flat-roof modular unit. Two people on the board had seen flat-roofed containers before, and both described the same failure: water pooling on the roof, rust along the seams, and a slow drip onto the ceiling panels during heavy rain. A pitched roof sheds water in minutes and carries snow in colder climates, and the eave overhang keeps the window openings dry.

• 36 sqm clear span, no internal columns to work around desks
• 15-degree gable roof for fast rain shedding
• Galvanised gutters and downpipes on both eaves
• Ridge height 3.2m, eave height 2.8m
• One unit loads into a single 40HQ along with all fittings

The classroom inside the box

Height changed the room more than any other decision. At 2.8 metres to the eave and 3.2 metres at the ridge, the space does not feel like a container, which matters when forty children and one teacher occupy it for six hours a day. Cross ventilation comes from two openable windows, and the 75mm insulated roof panel keeps midday heat from radiating down onto the desks. Ceiling fans were added on site for the hottest weeks.

Four people, one day, no heavy equipment

The kit arrived as numbered wall panels, four corner posts, roof trusses and covering sheets. The school hired four local workers and a supervisor, and the sequence ran base levelling, corner posts, wall panels, trusses, roof sheets. All connections are bolted and sealed with EPDM gaskets, so nobody needed a welding set. The building closed in three and a half hours and the electrical fit-out followed the next morning.

What it cost to run

The second year: it became a dining hall

When the permanent block finally opened, the modular building did not become redundant. It was unbolted in a day, moved forty metres across the compound and rebuilt as the school kitchen and dining hall, with the plumbing package extended for sinks. The same building has now served two functions without any structural change, which is the quiet argument for bolted kits over welded cabins.

Choosing between a 6x6m unit and two smaller ones

A single 36 square metre span is right when the room must stay open: classrooms, canteens, clinics, training rooms. Two 14 square metre units suit offices and storage, where separate doors matter more than open floor. The pitched-roof 6x6m unit is now available with skylights, partition walls and a covered walkway link to adjacent modules.

Send us the room's purpose, the number of occupants and the weather it has to survive, and we will specify the panel thickness, roof pitch and ventilation before quoting.