How do you calculate qty for form work like props shuttering sheet and acro sp

How do you calculate qty for form work like props shuttering
sheet and acro span for residential block ?
for Example: 10 sq mt what is the material and qty require to
do form work.

Question Posted / rohn

2 Answers
29099 Views
L&T, I also Faced
E-Mail Answers

Answers were Sorted based on User's Feedback

How do you calculate qty for form work like props shuttering sheet and acro span for residential b..

Answer / narayani upadhyay

I am not sure too much about it, but it gives an idea for calculating the props , number of sheets and acrospane in a building form work.
size of ms sheet (steel sheet)= 2' * 3'=6 6sqft
props should be between 500 mm to 600 mm to each-other.
Acrospane are uses from one end to other end for supporting the ms sheet on slab.
lets assume the size of 2 BHK = 1000 sqft
=Number of sheet required =1000/6=166.67 approx=170
Add 10 to 15 % wastage=170*1.10=187
=If depth of slab less than 175 mm = 4 sheet contain 1 acrospane.
= If depth of slab more than 175 mm=5 sheet contain 1 acrospan
= lets assume depth of slab= 125 mm
= Number of acrospane= 187/4=46.75 approx=50
=number of props requred= it depend on the size of beam and length of beam around the slab.Total length of beam in running meter around the slab(incuding sunken,balcony ,ots and staircase)=70 m
=props should be between 0.5 m to 0.6 m.
=number of Props for BEAM length=70/0.6=116=approx 120
=Number of props for slab=50*2=100
= Total number of PROPS=320

Is This Answer Correct ?

26 Yes

7 No

How do you calculate qty for form work like props shuttering sheet and acro span for residential b..

Answer / thamaraikani

simple constructin material calculation:
sheet,span and props
assuming :1000sqm builtup area
step1:sheet
1000/0.9*0.6=1851nos
step2:span
note:(slab thickness less than 175=4sheet)
(slab thickness more than175=5sheet)
span=1851/5=370nos
step3:props
note:(slab thickness less than 175=4sheet/2)slab thickness less than 175=5sheet/2)
props=370*2.5=925nos

Is This Answer Correct ?

6 Yes

3 No

Post New Answer

More Civil Engineering Interview Questions

How much steel needed for 1 m3 concrete for slab?

5 Answers

Hi.. Can i get hel in finding HPCL previous year question paper? plz help me in finding thiss..

0 Answers HPCL,

Why was the empire state building made of steel?

0 Answers

I want to know how much the lapping length for the pilecap reinforcement.. we r using single pile cap which is 24mby54m and 2.5m depth.. total 91piles are supporting the pile cap.. how to do a steel reinforcement??

0 Answers

What is rate for brick masonry work of 1.0 m3 in cm 1:6?

0 Answers

what is the use of steel rods of 16mm or 20mm used for 4.45mts for closing gutter.one mate consumes how many kgs with a gap of 6inches.

0 Answers HSSB, JSW,

what is tie-beam?where it used?

12 Answers HCC, Titan America,

What is the strength of Steel Fe 415 and Fe 500

1 Answers Aditya Constructions,

How much overlaping required for welding the reinforcement bars in Columns & beams

6 Answers

What should be the Min.Penetration in a hard rock for all pile diameteres?

1 Answers

What is the difference in painting using Roller and Brush? What is the paint consumption difference? As per IS one coat of painting is painting from left to right and top to bottom whether this can be done using roller ( Roller Stick height and feasibility) ?

0 Answers NPCIL,

what is the formula for calculating concrete in circular column ? pls explain with diagram add a link for diagram

1 Answers jlpl,

For more Civil Engineering Interview Questions Click Here