For projects in Ethiopia
School and classroom acoustics in Ethiopia
Hard floors, bare walls and long corridors that amplify everything. Children with developing language, and anyone with a hearing difficulty, lose more from a live classroom than adults do, which is why intelligibility is the target rather than quiet. Classrooms are concrete and hard surfaced with large class sizes and long corridors.
- Classroom RT
- A number, set against room volume, achieved mostly at the ceiling.
- Corridor spill
- Long hard circulation feeds every room off it. Treating the corridor helps every classroom at once.
- Halls and gyms
- Dual use rooms carrying speech, music and sport, where durability decides the product.
- Quote
- From a plan and a section, within 48 hours
01 / What it is
The material, and what it actually does on a Ethiopia job
Hard floors, bare walls and long corridors that amplify everything. Children with developing language, and anyone with a hearing difficulty, lose more from a live classroom than adults do, which is why intelligibility is the target rather than quiet.
Classrooms are concrete and hard surfaced with large class sizes and long corridors.
Work reaching us from Ethiopia is mostly industrial parks, offices, hotels, places of assembly, schools, hospitals.
- Landlocked, so the road leg counts Djibouti then several hundred kilometres by road. We quote the sea leg and the road leg separately so the date is honest.
- Packing has to survive the run A long road leg on mixed surfaces is hard on a pallet. We brace and wrap for that rather than for a short port transfer.
- Industrial parks at scale New manufacturing built quickly, where enclosure and partition detail can still be designed in rather than retrofitted.
- Classroom RT A number, set against room volume, achieved mostly at the ceiling.
Full specification
Thickness, density, NRC by frequency, fire class, standard sizes and build-up detail for school acoustics are on the main product page. This page covers what that means for a project in Ethiopia.
02 / The build-up
The build-up, layer by layer
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Layer 1
Ceiling baffles and clouds
PET felt suspended from the soffit, vertically as baffles or horizontally as clouds. In Ethiopia, split units and generator sets, with mechanical plant close to occupied areas.
Mixed with services. Set out around ducts, trays and lighting rather than fighting them, coordinated from your reflected ceiling plan.
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Layer 2
Acoustic panels
The full absorber range rather than one product: plain PET felt, printed felt, grooved panels and fabric finishes, chosen by how the room is used and how it has to look. In Ethiopia, church buildings and conference halls are tall hard volumes with long reverberation.
Wall array. Panels placed at first reflection points rather than spread evenly. Fewer panels, better result.
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Layer 3
Acoustic carpet and rugs
A tile carpet with a dense polyester face on a felt backing. In Ethiopia, classrooms are concrete and hard surfaced with large class sizes and long corridors.
Loose lay on tackifier. Tiles lifted individually for access under a raised floor, which is why tile beats broadloom in an office.
Architects working in Ethiopia usually need the build-up before the product. We will draw the section and mark what does the work. See how we support architects.
03 / In this market
What the buildings in Ethiopia do to the specification
- Landlocked, so the road leg counts
Djibouti then several hundred kilometres by road. We quote the sea leg and the road leg separately so the date is honest.
- Packing has to survive the run
A long road leg on mixed surfaces is hard on a pallet. We brace and wrap for that rather than for a short port transfer.
- Industrial parks at scale
New manufacturing built quickly, where enclosure and partition detail can still be designed in rather than retrofitted.
- Large assembly spaces
Halls and civic spaces built in concrete where speech fails long before the room is called echoey.
- Assembly and performance rooms
Church buildings and conference halls are tall hard volumes with long reverberation.
- School and campus buildings
Classrooms are concrete and hard surfaced with large class sizes and long corridors.
04 / Room by room
Where the money goes on a Ethiopia project
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Classroom RT
A number, set against room volume, achieved mostly at the ceiling. Djibouti then several hundred kilometres by road. We quote the sea leg and the road leg separately so the date is honest.
- Wood wool acoustic panels, 1200 x 600 mm
- Ceiling baffles and clouds, 9 to 24 mm
- Acoustic carpet and rugs, High density polyester
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Corridor spill
Long hard circulation feeds every room off it. Treating the corridor helps every classroom at once. A long road leg on mixed surfaces is hard on a pallet. We brace and wrap for that rather than for a short port transfer.
- Wood wool acoustic panels, 20 mm
- Ceiling baffles and clouds, Made to the drawing, standard and custom
- Acoustic carpet and rugs, Felt
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Halls and gyms
Dual use rooms carrying speech, music and sport, where durability decides the product. New manufacturing built quickly, where enclosure and partition detail can still be designed in rather than retrofitted.
- Wood wool acoustic panels, 400 kg per cubic metre
- Ceiling baffles and clouds, Both faces work, which is why suspended area outperforms the same area laid flat
- Acoustic carpet and rugs, 64 sq ft per pack
If the visual is fixed and the room still has to perform, that is a solvable problem and a conversation worth having early. See how we work with interior designers.
04 / Climate
What the Ethiopia climate rules in and rules out
Ethiopia is warm and humid through most of the year, with a long wet season, and that narrows the material list before acoustics is discussed.
Humidity is the deciding factor. PET felt does not absorb moisture, shed fibre or feed mould, which is why it outlasts fabric-wrapped mineral wool in this climate. Wood wool and timber need a ventilated cavity behind them.
The failure we design against here is mould, sagging fabric finishes and swelling in timber.
If a consultant has set the target, we will quote against their figures rather than ours, and stay out of the scope they own. More on working with acoustic consultants.
06 / Straight talk
Six mistakes that turn into a second fit-out
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Panels at child height where they get damaged
This is the one that comes back as a second fit-out rather than a snag.
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Treating one classroom and leaving the corridor
This is the one that comes back as a second fit-out rather than a snag.
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Choosing a product that cannot take a football
Enclose the machine, break the vibration path, then deal with what is left. Doing it in the other order costs more and achieves less.
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Treating it as a generic Ethiopia job
Djibouti then several hundred kilometres by road. We quote the sea leg and the road leg separately so the date is honest.
05 / Getting it there
Supply into Ethiopia, start to site
| Ships from | Palwal, Haryana, India |
|---|---|
| Arrives at | Djibouti, then road inland to Addis Ababa |
| Dispatch | 4 to 7 working days |
| Freight | Sea via Djibouti, then road |
| Support | Drawings, build-ups, BOQ and material that arrives complete |
Standard items dispatch in 4 to 7 working days. Grooved panels and custom colours take longer, and we say so before you order, not after.
Sea freight into Djibouti, then road inland to Addis Ababa and beyond. Air freight for samples and urgent quantities.
Questions from Ethiopia projects
What makes school and classroom acoustics different in Ethiopia?
Classrooms are concrete and hard surfaced with large class sizes and long corridors. Djibouti then several hundred kilometres by road. We quote the sea leg and the road leg separately so the date is honest.
Where should the budget go first on a Ethiopia project?
Classroom RT. A number, set against room volume, achieved mostly at the ceiling. Corridor spill. Long hard circulation feeds every room off it. Treating the corridor helps every classroom at once.
Do you have an office or installation team in Ethiopia?
No. We manufacture in India and supply into Ethiopia. We give you drawings, build-ups, a BOQ and material that arrives complete, and we will tell you plainly when a job needs a local contractor we cannot be.
How does material get to a Ethiopia site?
ships from: Palwal, Haryana, India, arrives at: Djibouti, then road inland to Addis Ababa, dispatch: 4 to 7 working days. Standard items dispatch in 4 to 7 working days. Grooved panels and custom colours take longer, and we say so before you order, not after.
What goes wrong most often on this kind of project?
Panels at child height where they get damaged. Treating one classroom and leaving the corridor.
What do you need from us to quote?
A plan, a section through the critical partition or ceiling, and what the room is for. From that we can give a build-up and a BOQ rather than a price per square foot.
Next step
Drawings in, BOQ and a delivered date out
Send what you have. We will give you a layer by layer build-up, a bill of quantities and a date material lands, and we will flag anything in the brief that will not achieve what you want.