In jack arch floor, the rise is kept
1/6th of the span
1/8th of the span
1/10th of the span
1/12th of the span
Correct Answer :
D. 1/12th of the span
Related Questions
The depth of an arch is the distance between
Ground level and springing line
Crown and springing line
Crown and ground level
Intrados and extrados
For providing a raft foundation, the following activities are involved
1. Ramming the foundation bed
2. Excavation of the soil upto required depth
3. Laying the reinforcement over the foundation bed
4. Curing the cement concrete placed over reinforcement
5. Pouring the cement concrete over the reinforcement The correct sequence is
1, 2, 3, 4, 5
5, 4, 3, 2, 1
2, 1, 3, 5, 4
3, 2, 5, 1, 4
Pick up the incorrect statement from the following:
The function of foundation is to distribute the load of super structure over a large bearing area
No timbering is required for shallow trenches
Shallow foundations can be constructed on made-up soil
Black cotton soil is very good for foundation bed
The art of bringing the floor to a true level surface by means of screeds, is called
Topping
Bedding
Screeding
None of these
Pick up the incorrect statement from the following:
In Flemish bond, headers and stretchers are laid alternately in the same course
In Flemish bond every header in each course lies centrally over every stretcher of the underlying course
In English bond, stretchers are laid in every course
In English bond, headers and stretchers are laid in alternate courses
Single Flemish bond consists of
Double Flemish bond facing and English bond backing in each course
English bond facing and double Flemish bond backing in each course
Stretcher bond facing and double Flemish bond backing in each course
Double Flemish bond facing and header bond backing in each course
The floor is rubbed with oxalic acid, for making its surface
Free from voids
Glossy
Durable
Uniform
In any good staircase, the maximum and minimum pitch respectively should be
90° and 0°
75° and 30°
60° and 10°
40° and 25°
The pile which supports the load due to friction between pile face and surrounding soil, is generally known as
Bearing pile
Friction pile
Sheet pile
Battered pile
The ceiling height of a building is
Between ceiling and ground level
Between ceiling and floor level
Upto roof above ground level
Upto ceiling from the ground level
The size of a floor tile commonly used, is
15 cm × 15 cm × 1.8 cm
20 cm × 20 cm × 2 cm
22.5 × 22.5 cm × 2.2 cm
All the above
The mortar in which both cement and lime are used as binding materials, is called
Cement mortar
Lime mortar
Fire resistant mortar
Gauged mortar
The 19 cm × 9 cm side of a brick as seen in the wall face, is generally known as
Stretcher
Face
Front
Header
The vertical distance between the springing line and highest point of the inner curve of an arch is known as
Intrados
Rise
Spandril
Extrados
A wooden block hinged on post outside a door, is known
Cleat
Stop
Horn
None of these
An arch constructed with finely dressed stones, is known
Ashlar arch
Rubble arch
Gauged arch
Axed arch
Slate
Is a metamorphic rock
Splits into thin sheets along its bedding planes
Has a smooth surface and contains alumina and silica
Possesses good water absorption capacity
The type of arch used for high class buildings where appearance is of prime importance, is known as
Ashlar arch
Rubble arch
Gauged brick arch
Axed brick arch
The skirting/dado in a bath roof should be upto
Ceiling
15 cm above floor level
200 cm
Level of the tap
In the method of tube boring of soil investigation, the following is essential:
A tube of about 2 metres length and 20 cm diameter with a cutting edge
A flap valve at the bottom of tube is provided to extract the soil sample
The tube is raised and lowered by 4 thick rope moving over a pulley suspended on a tripod stand
All the above
Pick up the correct statement from the following:
The cost of square rooms is less
The expenditure on the foundation and roof for the double storeyed building is nearly half of that for the ground storeyed building
The cost of construction of a house may be minimised by restricting the height floors
All the above
The type of roof suitable in plains where rainfall is meagre and temperature is high is
Pitched and sloping roof
Flat roof
Shell roof
None of the above
Raft foundation are generally preferred to when the area required for individual footing, is more than
25% to total area
30% of total area
40% to total area
50% of total area
If a is the offset of concrete bed in cms, and d is the depth of concrete bed in cms, then
d = 0.445 a
d = 0.557 a
d = 0.775 a
None of these
The form work from the underside of slabs, can be removed only after
1 day
4 days
7 days
14 days
The type of arch generally constructed over a wooden lintel or over a flat arch for the purpose of carrying the load of the wall above is
Segmental arch
Pointed arch
Relieving arch
Flat arch
Nogging of a common wooden partition is
Upper horizontal wooden member
Lower horizontal wooden member
Intermediate horizontal wooden member
Vertical wooden member
Suitable spacing of timber piles, is
50 cm
60 cm
80 cm
90 cm
Engineering news formula for obtaining safe bearing capacity of pile for drop hammer, is,
Q = Wh/6 (S + 2.5)
Q = Wh/2.5 (S + 6)
Q = (W × 6)/h (S + 2.5)
Q = (W × 2.5)/6 (S + h)
Pick up the correct statement from the following:
Lime mortar with cement in the ratio of in 10 is cheaper and better for outside plaster
For very cold or very hot climate, a compact and closed plan should be provided
On the sea coast, an exposed and open house is generally preferred
All the above