The phrase "adjoining that" is correct and usable in written English.
It can be used to refer to something that is next to or connected with something else, often in a physical or metaphorical sense.
Example: "The new building will be constructed adjoining that of the old library."
Alternatives: "next to that" or "beside that".
By a treaty made in 1837 the Indians ceded the southerly part of that region to the United States ( 7 Stat. 536); and by a treaty made in 1855 they ceded to it a further part adjoining that ceded before ( 10 Stat. 1165).
My parents built their house adjoining that of my grandparents.
He lived on the Boulevard St. Jacques in an apartment adjoining that of his wife and overlooking the exercise yard of the Sante prison.
Nancy, a well-fed Holstein, is let to graze on a field adjoining that town's library during the annual Fourth of July festivities.
When it is recollected that he was the governor of a territory adjoining that which must have been threatened, if a territory of the United States was threatened, and that he commanded the army, a part of which was stationed in that territory, the probability that the information communicated related to a foreign country, it must be admitted, gains strength.
From an adjustment of such a force distribution towards a conphase distribution, it is seen that the strip mobility adjoins that of the uniform force distribution.
He delighted in later life, when he took his former trainees round the House of Lords, in pointing out that his coat hook, labelled Walton of Detchant, adjoined that labelled Wales, Prince of.
The lot adjoins that of our neighbor's.
Indeed, he's just had a noteworthy encounter at The View, where his dressing room adjoined that of singer Mary J. Blige, who was also a guest on the show.
Results indicate that the myocyte behaves as a series of adjoining compartments that do not rapidly communicate changes in SR Ca2+.
The first one has an adjoining area that can be used as a sitting room.
