Concrete mix proportions

🔸 M5 :- 1:5:10

🔸 M7.5 :- 1:4:8

🔸 M10 :- 1:3:6

🔸 M15:- 1:2:4

🔸 M20 :- 1:1.5:3

🔸 M25 :- 1:1:2

#Irrigation Engg.(IMP One Liners)

#Kor-watering:-
The first watering given to the crop when it has grown a few centimeters is called Kor-Watering of Crops

The Optimum depth of kor-watering is:-
1)19 cm for Rice,
2)13.5 cm for Wheat and
3)16.5 cm for Sugarcane.

Paleo (Paleva):-
The first watering before sowing the crop is called Paleo.

Base Period:-
Time Between First And Last Watering

Crop Period:- Time Between Sowing and Harvesting of Crop.

Reservoir Capacity for a given Demand is obtained from Mass Inflow Curve

Clover Leaf Cofferdam Belongs to Cellular Type

Shape of Phreatic Line is Parabolic

Garret's diagram is used in the Design of a Canal

Head Loss through the Siphon Barrels is Calculated by,
Unwin's Formula...Unwin's Formula is generally used to Calculate the Afflux

Canal Escapes serve as a Purpose of 'Safety Valve'

Aqueduct(It's like Bridge):-
Canal over a Natural Drain

Super Passage:-
Natural Drain over the Canal

Level Crossing:-
Natural Drain and Canal at Same level.

Syphon Aqueduct:-
Constructed where the H.F.L of Natural Drain is Higher than the Canal Bed

Defective Air Circulation in
Plant's root zone is an Effect of Water Logging

Water Logging means when the Capillary fringe Reaches the Root Zone of Plants

🌟Elementary Profile of a Dam is a Right angled Triangle

Lacey's Concept of Design of Canals is Based on the Unlined Channels only

The Canal which is aligned along a Ridge Line is called as Watershed Canal

The Canal which is aligned at Right Angled to the Contour is called as Side-Slope Canal

#Hydrology
The Flood Routing Method which involves the Concept of Wedge and Prism Storage is:-
⚡️Muskingum Method

🔥Comparison of Bogue's compounds

1. Binding property :
C3S > C2S > C3A > C4AF

2. Heat of Hydration :
C3A > C3S > C4AF > C2S

3. Rate of Hydration :
C4AF > C3A > C3S > C2S

4. Water required for Hydration :
C3S > C2S > C3A = C4AF

🎲 Quiz 'HYDROLOGY'
🖊 30 questions · ⏱ 45 sec

HPCL Engineers/Officers 2022

📚 Qualification: BE/BTech

🎓 Branch: Mechanical (103 Posts), Electrical, Civil, IE etc.

📊 Total Post: 294

💸 Fees:
UR/EWS/OBC = 1180 Rs.
SC/ST = FREE

🔚 Last Date: 22/7/2022

Reference Books for MPSC Mains

Paper 1
1. SOM - Punmia
2. SA TOS - S S Bhavikatti
3. RCC - Pillai Menon
4. Prestressed - Krishna Raju
5. Steel - Duggar
6. CPM - U K Strivastav
7. Building construction and materials - Punmia
8. Numerical Methods - M K Jain

Paper 2
1. GTE - GOPAL Ranjan
2. Highway - Justo Khanna
3. Survey - Punmia
4. Hydrology - Subramanyam
5. Irrigation - Garg
6. Environmental Engineering - Devis Corrwell, Garg
7. Fluid Mechanics - Bansal
8. HM - Bansal
9. Estimating Costing - Datta
10. Tunnel - Bindra/ Shrinivasan
11. Bridge - Bindra / Rangwala

* IS: 456 – code of practice for plain and reinforced concrete.
* IS: 383 – specifications for fine & coarse aggregate from natural sources for concrete.
* IS: 2386 – methods of tests for aggregate for concrete.
* IS: 2430 – methods of sampling.
* IS: 4082 – specifications for storage of materials.
* IS: 2116 – permissible clay, silt & fine dust contents in sand.
* IS: 2250 – compressive strength test for cement mortar cubes.
* IS: 269 – specifications for 33 grade OPC.
* IS: 8112 – specifications for 43 grade OPC.
* IS: 12269 – specifications for 53 grade OPC.
* IS: 455 – specifications for PSC (Portland slag cement).
* IS: 1489 – specifications for PPC (Portland pozzolana cement).
* IS: 6909 – specifications for SSC (super sulphated cement).
* IS: 8041 – specifications for RHPC (Rapid Hardening Portland cement).
* IS: 12330 – specifications for SRPC (sulphate resistant portland cement).
* IS: 6452 – specifications for HAC for structural use (high alumina cement).
* IS: 3466 – specifications for masonry cement.
* IS: 4031 – chemical analysis and tests on cement.
* IS: 456; 10262; SP 23 – codes for designing concrete mixes.
* IS: 1199 – methods of sampling and analysis of concrete.
* IS: 516 – methods of test for strength of concrete.
* IS: 13311 – ultrasonic testing of concrete structures.
* IS: 4925 – specifications for concrete batching plant.
* IS: 3025 – tests on water samples.
* IS: 4990 – specifications for plywood formwork for concrete.
* IS: 9103 – specifications for concrete admixtures.
* IS: 12200 – specifications for PVC water bars.
* IS: 1077 – specifications for bricks for masonry work.
* IS: 5454 – methods of sampling of bricks for tests.
* IS: 3495 – methods of testing of bricks.
* IS: 1786 – cold-worked HYSD steel rebars (grade Fe415 & Fe500).
* IS: 432; 226; 2062 – mild steel of grade I.
* IS: 432; 1877 – mild steel of grade II.
* IS: 1566 – specifications for hard drawn steel wire fabric for reinforcing concrete.
* IS: 1785 – specifications for plain hard drawn steel wire fabric for prestressed concrete.
* IS: 2090 – specifications for high tensile strength steel bar for prestressed concrete.
* IS: 2062 – specifications for steel for general purposes.
* IS: 226 – specifications for rolled steel made from structural steel.
* IS: 2074 – specifications for prime coat for structural steel.
* IS: 2932 – specifications for synthetic enamel paint for structural steel.
* IS: 12118 – specifications for Polysulphide sealants

Geotechnical Engg

Unit/Test & it's Purpose:-Casagrande's Apparatus:-
Determination of Consistency Limits

Hydrometer:-
Determination of Grain Size Distribution

Plate Load Test:-
Determination of Safe Bearing Capacity

Oedometer:-
Consolidation Characteristics

Core-Cutter:-
Field Density

Pycnometer:-
Specific Gravity

Soil Deposited From Suspension in Running water:-
Alluvial Soil

Deposits of Marine Origin:-
Marl

Deposits by Wind:-
Loess

Organic Soil:-
Peat

Deposited at bottom of Lakes:-Lacustrine Soil

Thank you 😊

waste water engineering

Sewage :- All kinds of liquid waste produce by community (includes domestic waste, Storm waste, industrial waste etc).

Sullage :- The waste Water from bathrooms, kitchen etc.

Rubbish :- All sundry soild waste as paper, broken furnitures, waste building materials etc are known as rubbish

Sewer :- A conduit which carries sewage.

Sewerage :- Network of sewer used in collection, conveyance and disposal of sewage.

Dry weather flow (DWF) :- Domestic and industrial waste water produced by the community.

Wet weather flow (WWF) :- Storm water resulting from community.

Methods of sewerage system

👉 Dry and conservancy system

👉 Water carriage system

Subject:-RCC

Permissible Limits of Solids as Per IS 456:2000

1)Organic:-
200mg/litres

2) Suspended Matter:-
2000mg/l

3)Sulphates:-
400mg/l

4)Chlorides:-
a)For Plain Concrete:-
2000mg/l

b)For RCC:-
500mg/l

5)Inorganic:-
3000mg/l

🎲 Quiz 'ENVIRONMENTAL ENGINEERING'
🖊 30 questions · ⏱ 30 sec

Variations in water demand

Maximum daily demand :- 1.8*Avg. Daily demand.

Maximum hourly demand :- 1.5*Avg. demand hourly of maximum day

Peak demand :- 2.7*Avg. Hourly demand.

Maximum weekly demand :- 1.48*Avg. Weekly

Maximum monthly demand :- 1.28*Avg. Monthly

Standard of Irrigation water
concentration of soluble salt

Electrical conductivity is expressed in micro-mhos per centimeter at 25℃

Ec < 250 -- Low salinity of water

250 ≤ Ec < 750 -- Medium salinity of water

750 ≤ Ec < 2250 -- High salinity of water

Ec ≥ 2250 -- Very high salinity of water

--> Value of sodium adsorption ratio for high sodium water lies between - 18 to 26