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B. Pads must be monolithic concrete pad,16`dxlbb'x4b'. They must be set on firm prepared soil below existing ground surface. 6.4. Steps A. All steps must have treads a minimum of ten inches and a maximum rise of seven inches. They must span full width of door opening or they must be minimum 36b' wicte at porches. B. Pre-cast steps must be staadard size with no defeets. They must be set level with concrete bases under each corner. Whar set, the rise from the top step to the wearing surface must be the same as the rise for the steps or be in the wearing surface plana C. Hollow poured steps must be formed and poured over an 8dx 16b' footer. Wall thickness must bc minimum of4d. The tresds must be broom finishat. 6.5. Slab on Grade A. All eonerete stabs must be poured tuonolithieally and be a minimum of 4" thick. Reinforcing must be 6b'x 6d, Number 6 welded wire fabric unless otherwise spocified. Top of slab poured on existing grade must be a minimum of hb' above surroundiag soil level. All slab designs and executions must concur with the reyuirements of the Southere Building code. A. Before concr+ete is poured, a slab iaspectaon must be requested from the Contract Administrator and then pass inspection. A!l slabs and driveways muat meet Contract Administrator codes. B. Walks must be poured monolithic to expaasion joints. Reinforcing must be 6b' x 6b', number 10 welded wiro fabric. Width must be a minimum of 36b, wide with a broom finish. Control joints must be spaced the width of the waik. Expansion joints roust be spaced at a maximuro of 203, at all radius points, elevation changes (i.e. steps, porches, etc.) and at back of curb. Expaosion joint material can be'hb' asphalt impregnated material or'/sb' redwood. Slab thickness must be a minimum of 4b. C. Driveways must be monolithic poured slab with a broom finish and a minimum thickness of 4", Reinforcing must be 6d x 6t/ number 10 welded wire fabric. The slab will be powed on a 2d, sand cushion (compacted). Expansion joints will be spacai a msximum of 20 linear feet not to exceed 30 sq. yands in one block. Expansion joints will be used at all radius poiots, sidewalk intersections and house slab tio-ins. Expansion joint materisls can be h", asphalt impregnated material or'/:,,, redwood. E. Exterior beams must have a minimum width at top of beam of 18`d, and may taper down to 14d at the bottom. Exurior beams to have a minimum of 4, #5 (5/8 b') rebars, two (2) at the top and two (2) at the bottom, set on 3/8t/ stirrups or #6 wire mesh cut to fit. Exterior beam must txtend a minimum of 6'd into undisturbed soil. Exterior beam must be a minimum of 243 in height. F. Interior beams must be minimum of 18b', in height and should have two #4 (1/2t!) rebats side by side 6`d, off bottom of beam set in 3/8b' stinups or #6 wire mesh cut to fit at 33 O/C. Interior beams width to be 16b' in width at top and may taper to 8b at bottom. #4 rebar to have a minimum lap of 12". #5 rebar to have a minimum lap of 15". Interior beam to extend 3b', below undistiurbed soil. G. All slab and beam specifications listed herc must be used unless thc Contract Administrator's Building Code requirements or specifications exeeed these specifications. All siab designs and executions must concur with the requirements of the Soathern Building code. 6.6. Concrete Porches TDHCA - HOME Investment Partnerships Program Appei►dix A-04 - TMC Specifications Page 5 of 24 Revisea otrotnooa 216