বাংলাদেশ প্রচলিত ইটের ওন ৩.১২৫ কেজি। উত্তর-সহ কয়েকটি অনুরণ ভেরুত্বপূর্ণ প্রশ: 1. বাংলাদেশে প্রচলিত ইটের ওজন 3.125 Kg. 2. প্রচলিত ইটের আকার 9.5"×4.5"×2.75". 3. ইটে পানি শোষনের পরিমাণ - 20%. 4. ১ম শ্রেণির ইটের বিচূর্ণন শক্তি হবে - 400 to 700 ton/m^2. 5. ইটে লবণের পরিমাণ সর্বোচ্চ কত হবে- 2.5%, 6. সাধারণত ইট কত ঘণ্টা ভিজিয়ে রাখা হয় - 24.

Density of cement in loose conditions = 1440 kg/m³ Mass of one bag cement-50 kg Volume = Mass/Density = 50/1440 =0.0347 cum =0.0347 x 35.3147 = 1.225 cft উপ্তর সহ কয়েকটি অনুরূপ শুরু হলুন প্রশ্ন 1. For different layers of cement concrete floor. Pick up the incorrect statement from the following: -A 10 em thick cement concrete (1: 2: 4) is laid on top layer 2. The expected out turn of cement concrete 1:2:4 per mason per day is - 5.0 m3 3. For 12 mm thick cement plastering 1: 6 on 100 sq.m new brick work, the quantity of cement required, is-0.274 m3 4. For 100 sq. m cement concrete (1: 2: 4) 4 cm thick floor, the quantity of cement required, is -0.94 m3 5. Pick up the incorrect statement from the following. For performing compressive strength test of cement – Cement and standard sand mortar are used in the ratio of 1:3

(৯.৫"x৪.৫"x২.৭৫")

Cement- 1250x10/100 x 0.8 = 100 bag. মন্তর সহ কয়েকটি অনুরুপ গুরুত্বপূন প্রশ্ন 1. The height of the sink of wash basin above floor level is kept-75 cm to 80 cm. 2. For 12 mm thick cement plastering 1: 6 on 100 sq.m new brick work, the quantity of cement required, is 0.274 m3. 3. For 100 sq. m cement concrete (1: 2: 4) 4 cm thick floor, the quantity of cement required, is -0.94 m3 4. Size, capacity and materials need be specified for - Bib-cocks, Stop-cocks, Ball valves. 5. The minimum thickness of a flat slab is taken - L/32 for end panels without drops, L/36 for end panels without drops, 1/36 for interior panels without drop.

Dry V = 1×1.5 m3 Sum of ration 1+1.5+3=5.5 Brick= 1.5x3/5.5 x 300 = 245, 46 NOS ≅ 246 NOS অন্তর সহ কয়েকটি অনুরুপ প্ররুত্বপূর্ণ প্রশ্ন 1. A 200 mm thick wall made of modular bricks is 5 m long between cross walls and 3.8 m clear height between RCC slabs at top and bottom. The slenderness ratio of the wall is -15 2. For masonry work with solid bricks, consistency of mortar should be - 9 to 13 cm 3. A 200 mm thick brick masonry wall made of modular bricks carries an axial load of 30 kN/m from wall above and an eccentric load of 20 kN/m from RCC floor acting at a distance of 47.5 mm from the centre line of the wall. The resultant eccentricity ratio is - 0.100 4. The wedge shaped bricks forming an arch ring, are called- Vouxsirs 5. Brick nogging type of partition wall, is constructed by - Constructing brick work within a wooden framework

100 / 0.254×0.076 = 5180 ≅ 52001 উত্তর সহ কয়েকটি অনুরুপ গুরুত্বপূর্ন প্রশ্ন 1. Herringbone bond is used for - Walls having thickness more than 4 bricks. Architectural finish to the face work. Ornamental panels in brick flooring. 2. Pick up the incorrect statement from the following: - In English bond, stretchers are laid in every course 3. To construct a 10 cm thick partition wall, you will prefer - Stretcher bond 4. If tensile stress of a steel rod of diameter is 1400 kg/cm2 and bond stress is 6 kg/cm2, the required bond length of the rod is - 59 D

Weight = 1x 4/12x 150 = 50 lb. উত্তর সহ কয়েকটি অনুরণ গুরু হলুন প্রশ্ন 1. A 200 mm thick wall made of modular bricks is 5 m long between cross walls and 3.8 m clear height between RCC slabs at top and bottom. The slenderness ratio of the wall is -15 2. The thickness of each leaf of a cavity wall shall not be less than-7.5 cm 3. Minimum compressive strength in N/mm² for H1 type mortar used for masonry is -10 4. Minimum thickness of stiffening wall for 1 to 3 storeys shall not be less than -10 cm 5. To ensure uniform pressure distribution, the thickness of the foundation, is - Decreased gradually towards the edge 6. The thickness of the topping of a ribbed slab, varies between-5 cm to 8 cm

আর.সি.সি পৃষ্ঠতলে সিমেন্ট, বালি অনুপাত হচ্ছে ১:৪ এবং ইটের পৃষ্ঠতলে ১:৬।