Building Code of the Philippines(1)

Concrete to construction as specified in this code

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Unformatted text preview: l be connected to the masonry by bolts, or by steel plates properly designed. (3) Imbedding structural steel columns partially in masonry. This shall be avoided, unless special reinforcing is provided, and necessary construction joints are provided in the masonry at this point. Structural steel columns entirely within masonry, the masonry shall be connected by dowels tied to the column for horizontal reinforcing. (4) (5) Pipes and Conduits. No pie or conduit shall be embedded in any structural masonry less than the required fire protection except, that rigid electric conduits may be embedded in structural masonry, provided their location does not impair the strength of construction. Any pipe or conduit may pass through any masonry by means of sleeves placed not closer than three diameters, center to center. (6) Section 6.09: Bolts and Anchors. All bolts and anchors should be enbedded thoroughly into the mortar or grout not less than two-thirds of the wall thickness. Bearing Plates. Beams, firders, or other concentrated loads supported by a wall or pier shall have bearing at least 7.6 centimeters (3 inches) in length into the masonry. Metal bearing plates or continuous reinforced masonry members may be used to distribute the loads along the wall. Testing (a) Testing of masonry materials shall be done by the applicable government bodies or their authorized agencies, according to testing procedures and other relevant requirements needed for such tests. TABLE 6.06 - A ALLOWABLE STRESSES FOR A SPECIFIED REINFORCED MASONRY CONSTRUCTION The following allowable stresses may be used where Brick units or Hollow Concrete units conform to ASTM requirements, the mortar and grout conform to Section 6.01 and the construction practice conform to Section 6.06 of this chapter. kg/cm2 Psi Compression - axial 21 300 Compression - flexural 35 500 Shear (no shear reinforcement) 2 30 Shear (with reinforcement taking entire shear) 5 75 Bearing 26 375 Modulus of Elasticity 105,000 1,500,000 Modulus of Rigidity 42,000 600,000 Bond - plain bars 4 60 Bond - deformed bars 11 160 TABLE 6.06-B ALLOWABLE STRESSES AS RELATED TO f 'm Compression - axial 0.20 Compression - flexural 0.33 Shear (no shear reinforcement) (maximum) 0.02 Shear (with reinforcement 2.8 (40 psi) taking entire shear) 0.05 (maximum) 2.8 (100 psi) Bearing 0.25 Modulus of Elasticity 1,000 Modulus of Rigidity 400 Bond - plain bars 4 (60 psi) Bond - deformed bars 11 (160 psi) TABLE 6.06 - C Compressive Strength of Units* (kg/cm2) 70 103 175 280 420 Assume f 'm** (kg/cm2) (psi) 1,000 1,500 2,500 4,000 6,000 63 (psi) 900 80 109 140 168 1,150 1,500 2,000 2,400 * Compressive strength is here taken on the gross area of solid masonry units and the net area cf hollow masonry units. **In no case shall the assumed f 'm be greater than the compressive strength of the mortar or grout, whichever is lesser. CHAPTER 7 EXCAVATIONS, FOUNDATIONS, AND RETAINING WALLS Section 7.01: Quality and Design (a) The quality and design of materials...
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This note was uploaded on 09/22/2013 for the course ARIDBE AR taught by Professor Any during the Fall '12 term at Mapúa Institute of Technology.

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