Questions tagged [shiurim-measurements]

measurements relating to the performance of different Mitzvot

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15 views

How much is “k'dei l'chametz”?

How much is "enough sourdough to ferment"? Orla 2:6 refers to it as a qualitative measure, independent of the 200:1 ratio which is the quantitative measure that would render the sourdough indelible ...
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98 views

What is the finest measurement in the Talmud?

The standard Talmudic measures of length include, for example, Amah, Tefach, and Etzbah. But those measures are pretty loose, around 20% of freedom. What object or usage, in our Halacha, requires the ...
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Additional examples of measuring length in 'whole people in Halachah

אמר ר' יוחנן: סוכה העשויה ככבשן, אם יש בהקיפה כדי לישב בה כ"ד בני אדם כשרה ואם לאו פסולה. Rabbi Yoḥanan said: With regard to a sukka that is shaped like a furnace and is completely round, if ...
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59 views

Source of the idea of “enough to square” - “כדי לרבע”

IIRC the idea of "to square" addresses two main issues - measuring a minimal Succah and a minimal house for Mezzuzah (I'll focus on the first but the discussion on the later is similar). IIRC the ...
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How much should Rosho Verubo be for Succah measurements?

The Gemmorah (Succah 3 and Mishna on 28) states that the requirements for a Succah are that a person can fit it "ראשו ורובו" - the head and most of the body. IIRC the average body is 3 Amot (18 ...
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Why the minimal footage of a Succah is not mentioned in the Mishnah?

The first Mishnah in Succah discusses the height of Schach but not the measures. Subsequently, the Mishnah does not deal with it at all (Mishna 2.7 discusses the placement of the table independently ...
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63 views

Shouldn't the minimum Succah size be 6x7 Tfachim?

According to Bartenura on Mishna Sukkah 1:1, the calculation for the minimum Succah footage is the footage one man occupies (1 Ama x 1 Ama), i.g. 6 by 6 Tfachim and 1 Tefach for his table: שהסוכה ...
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Have the measurements for tumah changed throughout the ages?

There is discussion among poskim whether we measure a kezayit (and other measurements) using contemporary olives/eggs/etc, or whether we use some larger measurement based on a perceived historical ...
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2answers
54 views

Measuring Levi's cities

The Torah says that the cities of Levi'im must have surrounding areas of either 2000 or 3000 Amahs. However, I didn't see how those cities' sizes were determined in the first place. How Levi tribe (...
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1answer
102 views

Is there a minimum field size for peah to apply?

I know that peah applies to fields of food crops (not other produce) and that halacha is to leave at least 1/60 of the field unharvested for this purpose. What I haven't found is whether there is a ...
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187 views

The minimum amount of water a Sotah must drink

I was wondering if there is a minimum amount of water a Sotah must drink in order for the water to take effect. The closest I found to this being addressed was Rashi on Bamidbar 5:13 who quotes a ...
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50 views

Why Temples' dimensions were different from the Mishkan?

After asking "why-did-the-mizbeach-grow-40-times", I realized (thanks JoelK) that both measurements were dictated by G-d (it's unclear to whom: Moses, David or other prophets). See also Yalkut Shimoni ...
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53 views

Why did the Mizbeach grow 40 times? [duplicate]

The main, Bronze Altar in the Mishkan was 5 Amos wide. It was also portable. In the Temple(s), it grew to 32 Amot wide - 6.4 time in width and 41 times in footage1. EDIT: according to JoelK's answer,...
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Measuring the universe in G-d's cubits (Eruvin 21a)

In the following passage (Eruvin 21a in William Davidson edition) the sages try to determine the size of the Torah scroll that Zachariah saw in his prophecy: In order to determine the measure of ...
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Where can we assume that time refers to Shaot Zmaniot?

For many daily activities, the time frame for completion is dependent on the proportional hours (sha'ot zmaniot). But is there an extension of those hours to proportional minutes and seconds which ...
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3answers
96 views

Examples of “too much of a good thing”? [closed]

I can think of several examples of minimal requirements (k'zayit, rov cos, arba tefachim, etc.) and examples of unlimited measures (ein lahem shiur) but are there examples of maximum requirements, i.e....
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why were the measurements of the kiyor not given?

the measurements of all the other utensils in the mishkan are provided except for those of the kiyor. why were the measurements of the kiyor not given?
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Do any sources discuss reading Megillas Ester too fast?

I remember seeing a source explaining that ideally Megilla should be read somewhat fast because it is called "iggeret" (a letter), and letters are read at fast speed out loud. I've also heard the ...
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1answer
36 views

Of all Aron measures, why the thickness of the Kapores was not mentioned?

While working on "the-holy-ark-weigh-4-tons" I noticed, the thickness of the Kapores (1 Tefach) is concluded only in the Gemmorah by גזירה שווה to other measures (Succa 5a): "... אלא כפורת טפח מנלן?...
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Does the Holy Ark weigh 4 tons?

I did some calculations, based on the following measures: The Aron was 2.5 x 1.5 x 1.5 Amahs The gold was 2.5cm thick (a finger) for the ark and 10cm thick (a Tefah) for the Kapores, at 19.3 g/cm3 ...
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Who was responsible for keeping the original measures - weights and rulers?

The Torah obligates us to keep the proper measures in weights and rulers, like Amah and Tefach and Log and Shekel and Selah. Let's imagine there's an argument in court about house footage - one says ...
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172 views

Why did the nesiim give such tiny wagons?

The Torah describes how the nesiim gave wagons for the purpose of transporting the Mishkan. The Gemara gives the dimensions of those wagons: 5 amos long, 2.5 amos wide, with the 10-amah kerashim ...
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107 views

Halachic restrictions on Sefarim shelves

If memory serves me correctly, I believe Jonathan Rosenblum cites in his biography of Rav Yaakov Kamenetsky a story where Rav Yaakov complained that someone had placed a sefer on an arm of a bench ...
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48 views

Distance between foundation stone and western wall

What is the distance between the foundation stone and the western wall? Does the Talmud or anything say anything about the distance?
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3answers
182 views

Fitting the Sanhedrin (150) into Lishkat Hagazit (10x15 feet chamber)?

Here's the Tifferes Isroel's plan of the Temple drown to scale (on the bottom), which aligns with the plan of the Second Temple on the WIKI, According to those plans, the size of the whole Lishkat ...
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1answer
66 views

Is air volume counted as part of the kezayit for Birkat Hamazon?

Poori is an Indian bread that puffs when it is hot. When measuring the kezayit olive size of bread that is the minimum to require Birkat Hamazon, does one include the volume of air in the food, or ...
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1answer
393 views

How much water could the tub Shlomo made hold?

In 1 Kings 7:26 it says the tub King Shlomo made for the Beit HaMikdash could hold 2,000 "בַּ֖ת" which various commentaries explain differently. However, whatever the proper translation in 2 Divrei ...
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43 views

Does other food combine to a c'beitza for the bracha of netilas yadayim?

It's a well known halacha that if one intends to eat less than a k'zais of bread then one doesn't make a bracha on al netilas yadayim. This comes up sometimes on Pesach when there's not enough Matzah ...
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143 views

How large was the menorah?

This question asking why the menorah didn't have rings and staves for carrying reminded me that, unlike with the other mishkan objects, we're not given any dimensions for the menorah. I've always ...
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145 views

Halachic measures

Why did the rabbis of the Talmud use approximate weights and measures, such as k'zayit, k'betzah, revi'it, k'dei achilat pras, amah, etc. [1], which caused disagreements among later Sages as to what ...
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39 views

Measuring the time of eating (c'dei achilas pras)

I once saw written in a "alon" (given out in shuls before Shabbos) that in regards to eating matzah that it has to be done in the amount of time that is "c'dei achilas pras" -- that this time begins ...
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109 views

Suit Jackets and Tzitzis

I recently purchased a suit, and with Hashem's help it will be ready sometime this week. When I was at the suiting shop, I began thinking about whether or not my new suit would be obligated in tzitzis ...
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1answer
128 views

After-bracha on <kezayis of motzi, plus other food

If someone ate some motzi with other food as a snack (let's say half a filled pita pocket), what, if any, after-bracha should he make? Assume he ate a kezayis of the other food in 4 minutes, but not ...
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2answers
301 views

Is the shiur called a “k'beiah” or a “k'beitzah”?

Is the shiur the size of an egg properly called a k'beitzah ("כביצה") or a "kebeyah" ("כביעה" maybe)? If "כביצה" is correct, as I think it is, then why do people sometimes say "כביעה"?
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49 views

Arokh HaShulchan and shiur tzitzith

A braita cited authoritatively in the Talmud (Menachoth 40b-41a) seems to be pretty explicit that only a garment sufficient to cover a majority of a child is obligated in tzitzith: טלית שהקטן מתכסה ...
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Arokh HaShulchan and pocket square tzitzith

According to the Arokh HaShulchan (OC 16:5) that there is no size limit on garments to require tzitzith, does that mean a pocket square is obligated in tzitzith?
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49 views

how much is required to make something tamei?

Do all things that are tamei have to be more than an adasha or just a sheretz? for example is less than an adasha of zera tamei?
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85 views

Using archaeological findings for determining weights and measurements

Halacha uses many units of length (amot/cubits), volume (k'zayit/olive), etc. There are multiple opinions regarding how to translate these into modern equivalent units. For instance, the Chazon Ish ...
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Shamash needs to be a little longer than the rest of the strings?

In this answer, @Ezra linked to video tutorials of different methods of tying tzitzit. In the Arizal/Chabad method, the tutor says that according to Halacha, once the tying of the tzitzit is ...
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1answer
52 views

Where does Rashi say that less than a kezayis of oil does not become impure?

Wikiyeshiva has an article in Hebrew on the question of the Beis Yosef as to why Chanukah is 8 rather than 7 days (after all they had oil for one day). The article quotes an answer on the approach ...
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1answer
159 views

Place the Menorah above 10 tefachim?

The Shulchan Aruch 671:6 writes that one should initially place the menorah under 10 tefachim and above 3, but writes that if he lit above 10 tefachim he fulfills his obligation. The source comes from ...
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442 views

How long must tzitzis be?

Is there a requirement on how long tzitzis must be? I was wondering because there seems to be lots of people who wear rather long tzitziyos.
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How much snow for tevilah?

In respect to tovelling dishes in the snow, this discussion concludes that who knows what the Shulchan Aruch holds, but the Rema allows such a practice in times of need. But just how much snow? After ...
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269 views

Strictly speaking hilchos tznius for a man

Strictly speaking when going to play basketball, what must a man wear in regards to covering his body, I am asking because as I had learned a man has to cover from his breastbone to and including his ...
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1answer
96 views

Shalom Alecha: Rebbi vs. Rebbi u'Mori

A Toch K'dei Dibbur is the amount of time (~3s) that one has to fix a bracha, renege on a deal, etc. The phrase used for this time frame is a machlokes between the Mishnah Berurah (206:12) and the Taz ...
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51 views

May one eat dairy immediately after tasting a meat item? [duplicate]

I know that there are different customs regarding how long one must wait to eat dairy after eating meat. Let's say one tastes a meat stew or soup to see if it needs more spicing, and this amount is ...
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282 views

Length of skirt

If I understand correctly there are two reasons that women wear skirts: To cover the shok To solve the issue of pisuk raglayim To solve the "shok" concern, I understand that the skirt should reach ...
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1answer
116 views

Is there a minimum amount of urine that is considered “Going to the bathroom” for the purpose of making a blessing?

After eating food or drinking beverage, we say a blessing; however, this is only the case if some minimum amount of food or beverage has been consumed. Likewise, after going to the bathroom, we say a ...
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79 views

the regulatory size of a garment in way to be subject to tsitsit [duplicate]

Is there a minimal size of a garment with four corners that makes it duty to tsitsit? Is there a one size fits all?
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1answer
296 views

How does one measure the size of a tallit kattan?

A Judaica store emailed me, yesterday, that they are having a 2 for 1 sale on online purchases. I don't recall my tallit kattan size, and I don't understand the sizing numbers on the online site. I ...