Given : Soil moisture @ field Capacity is 40% volume basis Wilting Point is 16% Allow 1/4 of the total available moisture to be retained in the soil before applying irrigation water. 1-m soil depth to be wetted. Required: *Soil moisture content at the time of irrigation (or before irrigation) *ha-cm/ha of water needed to bring the soil moisture back to field capacity

Given : Soil moisture @ field Capacity is 40% volume basis Wilting Point is 16% Allow 1/4 of the total available moisture to be retained in the soil before applying irrigation water. 1-m soil depth to be wetted. Required: Soil moisture content at the time of irrigation (or before irrigation) ha-cm/ha of water needed to bring the soil moisture back to field capacity

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

See similar textbooks

Similar questions

Determine the soil loss for the following conditions: Location: Yakima, Washington, K =0.02 Mg/ha-year, l = 90 m, s = 5%, C = 0.12 (approximate for rowcrop after meadow rotation with good management, no terraces).
Determine the area which can be irrigated using surface method of irrigation with a source of water having a discharge of 1 meter cube per minute. The available moisture holding capacity of the soil is 180mm per meter and depth of root zone is lim. Imigation is done when 40% of available moisture is used. The total losses during irrigation are 35% and peak daily moisture use is 4.5mm
Urgently need the solution: The water content of a field soil is to be increased to 21% from existing 14%. The density of soil is 1.4 g/cm3 and the depth of effective root zone is 76cm. Calculate the required depth of water to be irrigated.
Q: Compare optimum moisture content with wilting point water content? Subject: Irrigation Engineering Civil Engineering Answer in word file
Assume that readily available moisture amounts to 150 mm/meter depth of soil profile. If consumptive use rate is 5mm/day what is the irrigation interval for a crop with 30 cm root zone.
Your company has won a contract to provide and compact the fill material for an earth levee (an embankment built to prevent overflow of a river), with the dimensions shown below. The levee fill is a silty clay soil to be compacted to atleast 95.1% of maximum standard Proctor of dry unit weight= 109lb/cu.ft at an OMC of 18.6%. Your borrow pit has a silty clay with an in-situ moist density of 112.6lb/cu.ft at 18.1% water content and a Gs = 2.679. When the soil is excavated and loaded on to your trucks, the void ratio of the material is e = 1.46. Your trucks can haul 401 cu.ft of material per trip. DETERMINE THE FF AND SHOW COMPELETE SOLUTION. ALL FINAL ANSWER WILL BE IN 3 DECIMAL PLACES. 1. Determine the volume of fill required for the levee in cu.ft 2. Determine the volume required from the borrow pit in cu.ft 3. Determine the required number of truck loads.
Earth is required to be excavated from the borrow pits for buildingembankment as shown in the figure. The moisture unit weight ofthe borrow pits is 18 kN/m3 and its water content is 8%. Estimatethe quantity of earth required to be excavated per meter length ofembankment. The dry unit weight required for the embankment is15 kN/m3 with a moisture content of 10%. Assume the specificgravity of the solids as 2.67. Also determine the degree ofsaturation of the embankment and volume of the water in theembankment
Please give me right solution according to the question. Don't copy from other websites. Depth of roots zone, dr. is 1.8 (m) in a farm its area is 50 (Hectare). The initial moisture content of the soil in roots zone, (w.)i%, is 15% and wanted to raise it to its saturated condition, (w),% is 45%. Compute the volume of irrigation water needed to saturate the soil in Roots zone. Compute the volume of drained water (Vwd from the Roots zone. Field capacity of the soil (wv))% =32 %.
Which table one property of silt soils
Q- If a soil has a voids ratio of 0.68 and water percolating through it has a discharge velocity of 1.35*10-2cm/s. Calculate its seepage velocity.
a) What is the water content after being in the rain, in percentage?b) What would be the mass of water, in kg, added to the soil due to exposure torain (assume unit volume)?
1. In a 5 ha area, it was determined that the soil volumetric field capacity and permanent wilting points are 25% and 15% respectively. Crop consumptive use is 5mm/day, application efficiency is 80% and irrigation application rate is 32m^3/hr. The allowable soil moisture depletion is 60%, apparent specific gravity is 1.2 and the depth of rootzone is 0.8m. Determine the following: (5 points each) a. Net depth of irrigation water to be applied b. Gross depth of irrigation water to be applied C. Irrigation interval in days d. Irrigation period in hours