chemical engineering interview questions - Wikitechy https://www.wikitechy.com/interview-questions/tag/chemical-engineering-interview-questions/ Interview Questions Tue, 07 Sep 2021 12:07:18 +0000 en-US hourly 1 https://wordpress.org/?v=6.9.4 https://www.wikitechy.com/interview-questions/wp-content/uploads/2025/10/cropped-wikitechy-icon-32x32.png chemical engineering interview questions - Wikitechy https://www.wikitechy.com/interview-questions/tag/chemical-engineering-interview-questions/ 32 32 Calculate the requirements of Sand , Bricks and Cement (per sq.ft) to build a low rise building ? https://www.wikitechy.com/interview-questions/civil-engineering/calculate-the-requirements-of-sand-bricks-and-cement-per-sq-ft-to-build-a-low-rise-building/ https://www.wikitechy.com/interview-questions/civil-engineering/calculate-the-requirements-of-sand-bricks-and-cement-per-sq-ft-to-build-a-low-rise-building/#respond Thu, 05 Aug 2021 06:44:36 +0000 https://www.wikitechy.com/interview-questions/?p=1433

Calculate the requirements of Sand , Bricks and Cement (per sq.ft) to build a low rise building ?

  • This is the method to calculate number of bricks and sand and cement on 10 ft height 10 ft length 4-inch wall (building inner wall) with 1:4 ratio.
  • Since you said it is an inner wall, i am assuming it as partition wall without any opening in case 1.
    1. For 10′x10′x4″ wall you need
    2. Bricks = 476 No’s
    3. Cement = 57 kg (125.66 pound)
    4. sand = 0.237 m^3 (8.3695 cft)
  • Now, let’s see “How can we calculate quantity of different materials” Opening (Door) of 1.0m x 2.1m

]]> https://www.wikitechy.com/interview-questions/civil-engineering/calculate-the-requirements-of-sand-bricks-and-cement-per-sq-ft-to-build-a-low-rise-building/feed/ 0 Is excessive curing for brick work is good or bad for the walls ? https://www.wikitechy.com/interview-questions/civil-engineering/is-excessive-curing-for-brick-work-is-good-or-bad-for-the-walls/ https://www.wikitechy.com/interview-questions/civil-engineering/is-excessive-curing-for-brick-work-is-good-or-bad-for-the-walls/#respond Thu, 05 Aug 2021 06:40:16 +0000 https://www.wikitechy.com/interview-questions/?p=1432
  • Excessive curing is bad for the walls because it causes fungi formation on the bricks which may weaken the walls.

Importance of Curing

  • Curing is the process of controlling the rate and extent of moisture loss from concrete to ensure an uninterrupted hydration of Portland cement after concrete has been placed and finished in its final position.
  • Curing also ensures to maintain an adequate temperature of concrete in its early stages, as this directly affects the rate of hydration of cement and eventually the strength gain of concrete or mortars.
  • Curing of concrete must begin as soon as possible after placement & finishing and must continue for a reasonable period of time as per the relevant standards, for the concrete to achieve its desired strength and durability. Uniform temperature should also be maintained throughout the concrete depth to avoid thermal shrinkage cracks. Also protective measures to control moisture loss from the concrete surface are essential to prevent plastic shrinkage cracks.
  • In a nut shell, curing process is designed primarily to keep the concrete moist by controlling the loss of moisture from the body of concrete, during the given period in which it gains strength.
]]> https://www.wikitechy.com/interview-questions/civil-engineering/is-excessive-curing-for-brick-work-is-good-or-bad-for-the-walls/feed/ 0 What will happen if one could not properly follow the spacing of slab reinforcement bar ? https://www.wikitechy.com/interview-questions/civil-engineering/what-will-happen-if-one-could-not-properly-follow-the-spacing-of-slab-reinforcement-bar/ https://www.wikitechy.com/interview-questions/civil-engineering/what-will-happen-if-one-could-not-properly-follow-the-spacing-of-slab-reinforcement-bar/#respond Thu, 05 Aug 2021 06:32:21 +0000 https://www.wikitechy.com/interview-questions/?p=1430
  • Properly sized and located reinforcing will keep cracks reasonably tight and serviceable, if they occur, but will not prevent them. Furthermore, the great majority of reinforced concrete designs that have been reviewed for slabs on ground do not have enough reinforcing to actually increase the slab’s load-carrying capacity above that of an unreinforced slab.

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