Die deursneeaansig is in die bouplan.

In Afrikaans, die is the definite article for the in both singular and plural. It does not change for gender, case, or number the way articles do in some other languages.

So in Die deursneeaansig is in die bouplan:

• Die deursneeaansig = The cross-sectional view
• in die bouplan = in the building plan

English uses the twice here too, so this part matches English quite closely.

Deursneeaansig is a compound noun, which is very common in Afrikaans.

It is made up of:

• deursnee = cross-section
• aansig = view / appearance / elevation, depending on context

Together, deursneeaansig means something like cross-sectional view.

Afrikaans often writes ideas that English may express with two or more words as a single compound word. So where English has cross-sectional view, Afrikaans can combine the parts into one noun.

Bouplan is also a compound noun:

• bou = build / building
• plan = plan

So bouplan means building plan, construction plan, or blueprint, depending on context.

Again, Afrikaans commonly joins these parts into one word.

Because this is a simple main clause, Afrikaans uses a word order that feels familiar to English speakers:

• Die deursneeaansig = subject
• is = verb
• in die bouplan = prepositional phrase

So the structure is:

Subject + verb + prepositional phrase

That is very close to English: The cross-sectional view is in the building plan.

This sentence does not show one of the more noticeable Afrikaans word-order patterns, such as verbs moving toward the end in subordinate clauses.

Yes, very much so. Is is the present tense form of wees (to be) and corresponds to English is.

In this sentence:

• Die deursneeaansig is in die bouplan
• The cross-sectional view is in the building plan

So is works just like the English linking verb here.

Afrikaans nouns usually do not change form the way nouns can in some other languages. There is no case ending here, and nouns do not change for grammatical gender because Afrikaans does not use grammatical gender in the same way many European languages do.

So:

• deursneeaansig stays deursneeaansig
• bouplan stays bouplan

This is one reason Afrikaans grammar can feel simpler than Dutch or German in some areas.

Yes. In is the preposition in, and it is used very similarly to English.

So:

• in die bouplan = in the building plan

This is a very straightforward match for English learners.

A rough English-friendly guide would be something like:

DUR-snay-AAHN-sikh

A few notes:

• eu in Afrikaans does not sound exactly like a normal English vowel, so any English-style approximation will only be rough.
• nee sounds like nay
• aan has a long aa sound
• sig ends with a sound like the ch in Scottish loch or German Bach, not a hard English g

You do not need perfect pronunciation right away; recognizing the compound parts often helps more at first.

Yes. Technical and architectural vocabulary can vary by context.

Depending on the document, deursneeaansig could be understood as:

• cross-sectional view
• section view
• sectional drawing

Likewise, bouplan might sometimes be translated as:

• building plan
• construction plan
• blueprint

So even if one translation is given, real-world usage may allow a few natural English equivalents.

Yes, if the meaning were indefinite rather than definite.

Compare:

• Die deursneeaansig is in die bouplan. = The cross-sectional view is in the building plan.
• ’n Deursneeaansig is in die bouplan. = A cross-sectional view is in the building plan.

So die means the, while ’n means a/an.

Yes. It is a complete, grammatical, and natural simple sentence.

It has:

• a subject: Die deursneeaansig
• a verb: is
• a location phrase: in die bouplan

It sounds like the kind of sentence you might find in a technical, educational, or architectural context.