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Tests of Reinforced Concrete Slabs. Nine reinforced concrete one-way slabs were tested. All specimens were 8 in. thick and 14 ft. in length. The width of the specimens was either 30 in. or 40 in. depending on the target reinforcement ratio. The gross reinforcement ratio varied between % and %.Author: Aishwarya Y. Puranam, Santiago Pujol. high strength concrete, as •Variations of minimum reinforcement requirements for a RC beam and a PS girder NCHRP 12‐ LRFD Minimum Flexural Reinforcement Requirements Reinforced Concrete Girder RC1 23 Span length: 32 ft Depth: 4 ft. concrete pavements, steel reinforcement should be used for the following conditions: (1) Odd-shaped slabs. Odd-shaped slabs should be reinforced in two directions normal to each other using a minimum of percent of steel in both directions. The entire area of the slab should be reinforced. An odd-shaped slab is considered toFile Size: KB. Part 5: Foundations Spread Footings Flexural Reinforcement. Requirements for the distribution of flexural reinforcement in two-way footings are given in Sections and of ACI , Building Code Requirements for Structural square footings, the reinforcement is to be distributed uniformly across the entire width of the footing in both directions.
Hi there, I have a question regarding minimum reinforcement for mass concrete (4m W x 4m H x 24m L). As shown in the picture, this is a tunnel plug design and my calculation (based on tunnel plug design guidelines) shows that mass concrete will be adequate for withholding the water pressure upstream and no tension reinforcement is required. The size and number of reinforcing bars must be chosen to (1) provide an area of reinforcement equal to or greater than the amount that is required, and (2) satisfy the minimum and maximum spacing requirements in ACI , Building Code Requirements for Structural Concrete and Commentary. Full Story - We need to build a 3 to 4 ft deep by 15 ft square concrete base slab to support a circular water tank. For the mass concrete base slab, the minimum reinforcement equations tell us we need X sq-in of steel per foot. Is the steel req'd all through the concrete slab or is it just required to place the steel on the outside edges? Guide for Concrete Floor and Slab Construction, ACI R, Ameri-can Concrete Institute (ACI), Detroit, 2. The Structurally Reinforced Slab on Grade, Engineering Data Report No. 33, Concrete Reinforcing Steel Insti-tute, Schaumburg, Ill., 3. Building Code Requirements for Re-inforced Concrete and Commentary, ACI /ACI R.
Epoxy coated reinforcement shall be stored and handled on Site in strict accordance with the requirements of BS ISO [Epoxy-coated steel for the reinforcement of concrete]. All stored reinforcement shall be protected from wind blown sand and the salt laden atmosphere. The minimum amount and spacing of reinforcement to be used in structural floors, roof slabs, and walls for control of temperature and shrinkage cracking is given in ACI or in ACI R. The minimum-reinforcement percentage, which is between and %, does not normally control cracks to within generally acceptable design limits. Reinforcing has to be supported so that it is in the top 1/2 to 1/3 of the depth of the slab throughout the pour. Finally, the IRC doesn’t show this in the code section, but you may need insulation under the slab, that is verified with the IECC. 1 thought on “Code Requirements for Concrete Slabs on Grade” bob. May 3, at pm. m Reinforcement for concrete slab design. As per clause of IS , the minimum reinforcement shall not be less than % of gross sectional if mild steel is used and % of gross sectional area if HYSD bars are used. m diameter of bars The diameter of the bar shall not exceed 1/8 of total thickness of the slab.