State your assumptions clearly State the simplifications mad

State your assumptions clearly. State the simplifications made in the form work design procedure? Design formwork for a wall. Height is 16 ft. Rate of pour is 11 ft/hr. Concrete temperature is 60 F. Concrete contains a retarder, and made with Type-I cement. Forms will be used once. Apply short term load factor. Form grade plywood sheathing 3/4 in thick and 4500 lb coils ties are on hand. Use Douglas Fir larch #2 grade. Use 2 times 4 foe studs and 2 times 6 double members for wales. Steel struts are used and capacity of each strut is 5000 lb. Design sheathing and spacing of its supports (studs) Design stud size and spacing of its supports (wales) Design wale (use double member wales) and spacing of wale supports (ties) Check whether the given tie is sufficient or not Check for bearing stress at the intersection of stud and wales Determine the minimum lateral force for design of wall form bracing. Assume that local building code specifics a minimum 25 psf wind loading Determine the strut spacing. Assume the top end of the strut is 2 ft below from the top of wall. Assume the strut bottom is placed at 14 ft away from the bottom end of wall form. Show the final form work design through figures(s). Shoring design: Assume total vertical load acting on the slab form including formwork self weight as 134 psf. Determine maximum load experienced by -A of the frame for the arrangement shown in Figure-1 What total load will an A36 steel pipe shore carry fits outside diameter is 1 5/8 in. inside diameter is 1 7/16 in., and unsupported length is 8ft? Compare (a) and (b) and check whether the given steel pipe can be used as legs for the frame or not

Solution

- All loads are assumed as uniformly distributed.

- Beams supported over three or more spans are regarded as continous and approximate formulas given elsewhere are used.

- The stresses induced in every member of the formwork, in bending, in shear and in bearing, should be within the permissible working stress for that material.

- Forms must be so designed that the various parts will not deflect beyond the prescribed limits. The permissible deflection depends on the desired finish as well as location.

- The strength of nails is neglected in determining the size of main formwork. This does not apply when considering splices, braces and brackets.