L'architetto consiglia di rinforzare la muratura.

Because architetto begins with a vowel, Italian uses the singular definite article l' before it.

So:

• l'architetto = the architect

Using il architetto would sound wrong in standard Italian. The apostrophe shows that the article has been shortened before a vowel.

Consiglia is the third person singular present tense form of the verb consigliare.

So:

• consigliare = to advise, to recommend
• consiglia = he advises, she advises, it advises

In this sentence, the subject is l'architetto, so the finite verb must match it:

• L'architetto consiglia... = The architect advises/recommends...

It can mean advises, recommends, or suggests, depending on context.

In a sentence like this, all of these are possible in English:

• The architect advises reinforcing the masonry
• The architect recommends reinforcing the masonry
• The architect suggests reinforcing the masonry

Italian consigliare often covers all of these ideas.

After consigliare, Italian often uses di + infinitive when saying that someone advises doing something.

So the pattern is:

• consigliare di + infinitive

Examples:

• Consiglio di aspettare = I advise waiting
• Ti consiglio di studiare = I advise you to study
• L'architetto consiglia di rinforzare... = The architect advises/recommends reinforcing...

This is a very common structure in Italian.

Because consigliare normally takes di + infinitive, not a + infinitive, in this kind of structure.

So:

• consiglia di fare qualcosa = correct
• consiglia a qualcuno di fare qualcosa = also correct when you mention the person receiving the advice

For example:

• L'architetto consiglia di rinforzare la muratura = The architect recommends reinforcing the masonry
• L'architetto consiglia al proprietario di rinforzare la muratura = The architect advises the owner to reinforce the masonry

Rinforzare is an infinitive verb. Its basic meaning is to reinforce or to strengthen.

Here it appears after di, in the structure consiglia di + infinitive.

So:

• rinforzare = to reinforce
• di rinforzare = to reinforce, after a verb like consigliare

The sentence does not explicitly say.

Italian often leaves that unstated when it is obvious from context or not important. The sentence only says that the architect recommends that the masonry be reinforced.

Depending on context, the implied person could be:

• the owner
• the builder
• the engineers
• the workers

If Italian wanted to state the person more clearly, it could say something like:

• L'architetto consiglia al proprietario di rinforzare la muratura
  = The architect advises the owner to reinforce the masonry

Muratura usually means masonry, brickwork, or wall structure, depending on context.

It does not always mean just a single wall. It can refer more generally to the built masonry structure of a building.

So in technical or architectural language:

• muro = wall
• muratura = masonry, wall construction, masonry structure

That is why la muratura is a natural choice in a sentence about architecture or structural work.

Italian often uses the definite article more than English does.

So where English might say:

• reinforce masonry

Italian often says:

• rinforzare la muratura

The article la does not necessarily mean one specific wall in the narrow sense. It can simply refer to the masonry structure under discussion.

This is very normal in Italian, especially with nouns referring to things already understood from context.

This is the most neutral and natural word order:

• L'architetto consiglia di rinforzare la muratura

Italian word order is somewhat flexible, but this version is standard because it follows:

• subject + verb + infinitive phrase

You could change the order for emphasis in some contexts, but for a learner, this sentence is the best basic model.

In consiglia, the gli is part of the sound pattern -glia-, which is pronounced somewhat like lya, but with the tongue positioned differently from English ly.

A rough English-friendly approximation is:

• con-SIL-ya

More carefully:

• con-si-glia
• the glia sounds like a soft palatal sound, similar to the lli in some pronunciations of million, though not exactly the same

So consiglia is roughly:

• kon-SEEL-ya or kon-SIL-ya, depending on how detailed the approximation is

Yes. Italian often uses an infinitive where English may prefer either to + verb or an -ing form.

So di rinforzare la muratura can be rendered as:

• to reinforce the masonry
• reinforcing the masonry

That is why natural translations include:

• The architect recommends reinforcing the masonry
• The architect advises to reinforce the masonry

However, in natural English, recommends reinforcing is usually better than advises to reinforce. English often prefers:

• advises reinforcing
• advises someone to reinforce
• recommends reinforcing

Yes. Consigliare can be used in more than one way.

Common patterns include:

• consigliare qualcosa = to recommend something
• consigliare di fare qualcosa = to recommend doing something
• consigliare a qualcuno di fare qualcosa = to advise someone to do something

Examples:

• Consiglio questo libro = I recommend this book
• Consiglio di partire presto = I recommend leaving early
• Ti consiglio di partire presto = I advise you to leave early

Your sentence uses the second pattern:

• consiglia di rinforzare la muratura