I am not a builder or have much knowledge regarding a roof installation. Maybe somebody can offer their two bobs worth.

My mother-in-law is building a new small home, 7mtr x 11mtr.

The builder yesterday added the CPAC tiles to the roof. I noticed that the steel frame for the roof is only welded to the reinforcing bar which is sticking out of the vertical concrete post. There are no horizontal concrete beams between the top of the posts.

Is this sufficient to support the weight of the roof? To me it does not look very strong, don't know what the weight of the roof would be.

Thank you in advance for any comments.

Very common over here.

Yup ^^^ for a small house it's no problem. We have concrete ring-beams and steel too,

No worries.

weld to columns.bmp

Common building practice in Thailand. I've never heard of anyone having any problems...the roof of my two story, 4 bedroom, 212 sq/mtr house is built/attached the same way. To me it seems a very sturdy way to secure a roof. Even if the house did have roof horizontal concrete beams between the vertical concrete poles (I do see some houses built that way...I watching one go up right now) the vertical concrete poles are still carrying the great, great bulk of the roof weight with the filler brick between the poles carrying the rest. And even in a windstorm the force is a combination of downward and lateral pressure due to the slope of the roof....those roof beams welded to the rebar in the concrete poles ain't going to let the roof go nowhere.

Have a photo ?

Have a photo ?

There must be either a steel RHS/double, welded stud, concrete or [less likely in LoS] a wood beam spanning between the columns to carry the sloping roof framing/rafters which are spaced as close together as 300-600mm - depending on design parameters, framing member size & gauge, and the roof loads of your particular roofing material selection & geometry.

There are numerous variables to determine what's required, and structural failure can be catastrophic since its often concrete, and its over your head. If you're not an architect or structural engineer, hire one.