within what duration vs within which duration

Both "within what duration" and "within which duration" are grammatically correct, but they are used in slightly different contexts. "Within what duration" is more commonly used and sounds more natural in everyday language. On the other hand, "within which duration" may sound a bit more formal or technical. The choice between the two depends on the formality of the context.

Last updated: March 29, 2024 • 840 views

within what duration

This phrase is correct and commonly used in English.

This phrase is used to inquire about the specific time frame within which something is expected to happen or be completed.

Examples:

Can you complete the project within what duration?
Within what duration should I expect a response?
Tell me within what duration you need the report.
Do you know within what duration the repairs will be finished?
Within what duration do you plan to finish the task?

Show examples from the web [+]

To prevent misuse of the scheme, producer organisations should not in general be permitted to change reference periods within the duration of a programme.
For requirement (b) the license holder shall inform the competent body about the new installation within the duration of the EU Ecolabel licence of toilets together with appropriate supporting documentation.
The tested specimens shall not fail within a test duration of 144 hours.
The Millennium Development Goals deadline falls within the duration of the first financing instrument for development cooperation.
Water-based space heating appliances installed within the duration of the EU Ecolabel licence shall:
HVAC systems/appliances installed within the duration of the EU Ecolabel licence shall be equipped with an automatic switch off when windows are opened and when guests leave the room.
Toilets installed within the duration of the EU Ecolabel licence shall have effective toilet flush of <= 4,5 L.
Since demand may fluctuate within the duration of any selling operation, products should not be withdrawn from the market before being put up for sale.
Costs relating to open access to scientific publications that result from research funded under Horizon 2020, incurred within the duration of an action, shall be eligible for reimbursement under the conditions of the grant agreement.
Water heating appliances installed within the duration of the EU Ecolabel licence shall have at least the following relevant energy efficiency indicators:
Automatic systems (e.g sensors, centralised key/card, etc.) which turn the all the lighting off when guests leave the room, shall be installed at construction and/or renovation of all new and/or renovated rental accommodations/guest rooms within the duration of the EU Ecolabel licence.
Divestments to limit distortions of competition should take place without undue delay, taking into account the type of asset being divested and any obstacles to its disposal [37], and in any case within the duration of the restructuring plan.
The AMP states that OLAF's investigations must be performed within a reasonable duration, which is, on average, 24 months (Result indicator 2.1).
The experience requested shall be gathered during professional practice of minimum 4 years' duration within a period of not more than 5 years before the application date.
'training course' means theoretical and/or practical instruction developed within a structured framework and delivered within a defined duration;
Provision should be made to the effect that within that maximum duration of stay, an extension of the contract or change of employer is possible, provided that the admission criteria continue to be met.
Household air conditioning and air-based heat pumps appliances installed within the duration of the EU Ecolabel licence shall have at least the following relevant energy classes as defined in Commission Delegated Regulation (EU) No 626/2011 [14]:Type
In order to prevent misuse of the scheme, the elements referred to in paragraphs (a) and (c) shall not in general be permitted to change within the duration of the supported actions unless evidence shows that such changes allow for a better accomplishment.
Any household air conditioner bought within the duration of the eco-label award shall have at least Class A energy efficiency as laid down in Commission Directive 2002/31/EC, or have corresponding energy efficiency.
Moreover, this information has been collected at the wrong time; many of the underlying issues for which data are collected are medium or longer-term in nature so that data collection within the contractual duration of the project is by definition premature.

Alternatives:

within which time frame
within what period
within what timeframe
within what time span
within what interval

within which duration

This phrase is correct but may sound slightly more formal or technical.

This phrase is also used to inquire about the specific time frame within which something is expected to happen or be completed, but it may sound more formal or technical compared to "within what duration".

Examples:

Can you complete the project within which duration?
Within which duration should I expect a response?
Tell me within which duration you need the report.
Do you know within which duration the repairs will be finished?
Within which duration do you plan to finish the task?

Show examples from the web [+]

To prevent misuse of the scheme, producer organisations should not in general be permitted to change reference periods within the duration of a programme.
For requirement (b) the license holder shall inform the competent body about the new installation within the duration of the EU Ecolabel licence of toilets together with appropriate supporting documentation.
The tested specimens shall not fail within a test duration of 144 hours.
The Millennium Development Goals deadline falls within the duration of the first financing instrument for development cooperation.
Water-based space heating appliances installed within the duration of the EU Ecolabel licence shall:
HVAC systems/appliances installed within the duration of the EU Ecolabel licence shall be equipped with an automatic switch off when windows are opened and when guests leave the room.
Toilets installed within the duration of the EU Ecolabel licence shall have effective toilet flush of <= 4,5 L.
Since demand may fluctuate within the duration of any selling operation, products should not be withdrawn from the market before being put up for sale.
Costs relating to open access to scientific publications that result from research funded under Horizon 2020, incurred within the duration of an action, shall be eligible for reimbursement under the conditions of the grant agreement.
Water heating appliances installed within the duration of the EU Ecolabel licence shall have at least the following relevant energy efficiency indicators:
Automatic systems (e.g sensors, centralised key/card, etc.) which turn the all the lighting off when guests leave the room, shall be installed at construction and/or renovation of all new and/or renovated rental accommodations/guest rooms within the duration of the EU Ecolabel licence.
Divestments to limit distortions of competition should take place without undue delay, taking into account the type of asset being divested and any obstacles to its disposal [37], and in any case within the duration of the restructuring plan.
The AMP states that OLAF's investigations must be performed within a reasonable duration, which is, on average, 24 months (Result indicator 2.1).
The experience requested shall be gathered during professional practice of minimum 4 years' duration within a period of not more than 5 years before the application date.
'training course' means theoretical and/or practical instruction developed within a structured framework and delivered within a defined duration;
Provision should be made to the effect that within that maximum duration of stay, an extension of the contract or change of employer is possible, provided that the admission criteria continue to be met.
Household air conditioning and air-based heat pumps appliances installed within the duration of the EU Ecolabel licence shall have at least the following relevant energy classes as defined in Commission Delegated Regulation (EU) No 626/2011 [14]:Type
In order to prevent misuse of the scheme, the elements referred to in paragraphs (a) and (c) shall not in general be permitted to change within the duration of the supported actions unless evidence shows that such changes allow for a better accomplishment.
Any household air conditioner bought within the duration of the eco-label award shall have at least Class A energy efficiency as laid down in Commission Directive 2002/31/EC, or have corresponding energy efficiency.
Moreover, this information has been collected at the wrong time; many of the underlying issues for which data are collected are medium or longer-term in nature so that data collection within the contractual duration of the project is by definition premature.

Alternatives:

within what duration
within which time frame
within which period
within which timeframe
within which time span

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within what duration vs within which duration