CONCRETE LINTEL SPECIFICATION GUIDE 900 North Hartley Street, York, PA 17404 717.792.4700 | www.yorkbuilding.com STOCK SOLID LINTEL SIZING OVERVIEW 4" x 8" SOLID LINTELS #3 Lintel Length 30" to 68" #3 #3 #3 #4 Lintel Length 72" to 88" Lintel Length 90" to 96" #3 #5 Lintel Length 102" to 144" 6" x 8" SOLID LINTELS #3 Lintel Length 30" to 64" #3 #3 #3 #4 Lintel Length 72” to 88” Lintel Length 90” to 96” #3 #5 Lintel Length 104” to 144” 8" x 8" SOLID LINTELS #3 #3 Lintel Length 40" to 64" #3 #3 #3 #3 #3 #3 #4 #4 Lintel Length 72" to 88" Lintel Length 96" #3 #5 #3 #5 Lintel Length 108" to 144" Special rebar schedules available upon request. Rebar is grade 60 steel ASTM 615 Concrete compressive strength is 3,000 PSI Minimum fire rating is 1 1/2 hours Rebar placement: Clearance from bottom: 1 1/2" Clearance from top: 1 1/2" U-LINTEL SIZING OVERVIEW 6" x 8" U-LINTELS 8" x 8" U-LINTELS #3 rebar #3 rebar #5 rebar #5 rebar 5 1/2” long horizontal notch for seismic reinforcing. 10" x 8" U-LINTELS 5 1/2” long horizontal notch for seismic reinforcing. 12" x 8" U-LINTELS #3 rebar #3 rebar #5 rebar #5 rebar 5 1/2” long horizontal notch for seismic reinforcing. 5 1/2” long horizontal notch for seismic reinforcing. Notch to allow for seismic reinforcing. U-lintels are available in lengths from 36" to 144". All four widths are stocked in these lengths: 48, 56, 72, 88, 96, 144 All other lengths available by special request. #3 and #5 rebar placed as shown. Special rebar schedules available upon request. Rebar is grade 60 steel ASTM 615 5,000 PSI concrete mix design Minimum fire rating is 1 1/2 hours Rebar placement: Clearance from bottom: 1 1/2" Clearance from top: 1 1/2" Load Tables SOL ID L IN TELS: 4" x 8" 6" x 8" 8" x 8" U -L IN TELS: 6" x 8" 8" x 8" 10" x 8" 12" x 8" 4X8 SOLID LINTELS (ft.-lbs.) (lbs/ft.) (lbs/ft.) 577 701 506 615 861 32 24 475 577 808 34 26 42 Typical Section: Width (W) = 3.625" Height (H) = 7.625" Eff. Depth (d) = H-1-1/2" 1/2" bar dia. Mn= 1/8 Wn (L2) Vn= 1/2 WnL2 max = Maximum allowable deflection = L 2/360≤0.3" UL Fire Ratings 1-1/2 hour 2 449 545 763 36 28 44 404 490 687 40 32 48 46 38 54 351 426 597 Not required 336 408 572 48 40 56 52 44 60 310 377 528 (1) #3 288 350 490 56 48 64 279 338 474 58 50 66 252 306 429 64 58 72 230 280 392 70 62 78 225 273 382 72 64 80 212 258 361 76 68 84 202 245 343 80 72 88 197 239 335 82 74 90 88 80 96 183 223 312 (1) #4 Self Weight 28#/ft 172 208 292 94 86 102 168 204 286 96 88 104 (1) #3 162 196 275 100 92 108 155 188 264 104 96 112 152 185 259 106 98 114 144 175 245 112 104 120 (1) #5 135 164 229 120 112 128 130 158 221 124 116 132 126 153 214 128 120 136 119 144 202 136 128 144 H MASONRY OPENING (L1) EFFECTIVE SPAN (L2) SEISMIC REINFORCEMENT 45° Equivalent load of apex area = .33 WL Equivalent loadEffective of apex span area ="L" .33 ofWL lintel (centerline of bearing to centerline of bearing). Effective span "L" of lintel (centerline of bearing Weight of masonry block "W" PSFto centerline of bearing). Weight of masonry block "W" PSF EXAMPLE LOADS ABOVE APEX EXAMPLE Equivalent apex load for 4"X8" Lintel with effective span of 48" SUPERIMPOSED (NOT CARRIED BY LINTEL) Equivalent apex loadLoad for 4"X8" Lintel with effective span of 48" = 23#FT Apex = (.33) (W) (L) = .33 (35psf/2) (48"/12) Apex Load = (.33) (W) (L) = .33of(35psf/2) (48"/12) = 23#FTspan of 48" Capacity 4X8 lintel with effective Capacity of 4X8 lintelload withtable effective span of 48" (from for live loads) = 572#/FT (from load table for live loads) = 572#/FT Therefore, the lintel has significant excess capacity, if Therefore, the lintel has significant capacity, superimposed load isexcess located within ifapex area, then superimposed load within area, then referistolocated the load tablesapex to ensure sufficient capacity. APEX AREA refer to the load tables to ensure sufficient capacity. Hollow masonry block weights for determining uniform equivalent apex load on lintel: Hollow masonry 8"block blockweights weight =for 35determining psf (Hollow)uniform equivalent apex load on lintel: 8" block weight12" = 35 psf (Hollow) block weight = 50 psf (Hollow) 12" block weight = 50 psf (Hollow) As a minimum, the lintels carry the apex area above the span. An example of the As a minimum,uniform the lintels carry theapex apexload areacalculation above the span. An example of the equivalent follows. uniform equivalent apex load calculation follows. H=1/2 EFFECTIVE SPACE BOND BEAM (SEE SECTION) SEISMIC REINFORCING 2898 2898 2898 2898 2898 2898 2898 2898 2898 2898 2898 2898 4900 4900 4900 4900 4900 4900 4900 4900 4900 4900 4900 4900 4900 4900 4900 4900 673 817 982 28 20 40 Design Data fx = 3,000 psi (minimum) fy = 60,000 psi (per ASTM-A615) Average weight per lineal foot of beam - 33 lbs Seismic Capability Design formulas as per ACI 318-12 Mn= Moment governed by ultimate strength = 0.9 (A 2)(f2)(d-a/2) Vn= Shear governed by ultimate strength Live Load 6. Maximum bending moment capacity M1 Dead Load 1145 24 4. Effective span L2 (inches) 5. Maximum allowable load Unfactored (lbs/ft.) 16 3. Masonry opening L1 (inches) 36 3,000 psi (Dry mix) 32 Top Bottom 2. Nominal lintel length (inches) 1. Reinforcement rods (A1) 900 North Hartley Street, York, PA 17404 | 717.792.4700 | www.yorkbuilding.com SOLID LINTELS - 4" x 8" 6x8 SOLID LINTELS 24 4. Effective span L2 (inches) 5. Maximum allowable load Unfactored Typical Section: Width (W) = 5.625" Height (H) = 7.625" Eff. Depth (d) = H-1-1/2" 1/2" bar dia. Mn= 1/8 Wn (L2)2 Vn= 1/2 WnL2 max = Maximum allowable deflection = L2/360≤0.3" UL Fire Ratings 1-1/2 hour 5660 757 920 1288 32 24 40 5660 605 735 1030 40 32 48 5660 504 613 858 48 40 56 433 526 736 56 48 64 5660 (1) #3 5660 379 460 644 64 58 72 Equivalent load of apex area = .33 WL Effective span "L" of lintel (centerline of bearing to centerline of bearing). Weight of masonry block "W" PSF EXAMPLE Equivalent apex load for 6"X8" Lintel with effective span of 48" Apex Load = (.33) (W) (L) = .33 (32psf/2) (48"/12) = 43#FT Capacity of 6X8 lintel with effective span of 48" (from load table for live loads) = 858#/FT Therefore, the lintel has significant excess capacity, if superimposed load is located within apex area, then refer to the load tables to ensure sufficient capacity. Hollow masonry block weights for determining uniform equivalent apex load on lintel: 6" block weight = 32 psf (Hollow) 12" block weight = 50 psf (Hollow) As a minimum, the lintels carry the apex area above the span. An example of the uniform equivalent apex load calculation follows. 5660 (ft.-lbs.) Design Data fx = 3,000 psi (minimum) fy = 60,000 psi (per ASTM-A615) Average weight per lineal foot of beam - 50 lbs Seismic Capability Design formulas as per ACI 318-12 Mn= Moment governed by ultimate strength = 0.9 (A 2)(f2)(d-a/2) Vn= Shear governed by ultimate strength 1010 (lbs/ft.) Live Load 6. Maximum bending moment capacity M1 1226 (lbs/ft.) Dead Load 1717 16 3. Masonry opening L1 (inches) (lbs/ft.) 32 Not required 3,000 psi (Dry mix) Top Bottom 2. Nominal lintel length (inches) 1. Reinforcement rods (A 1) 5660 336 408 572 72 64 80 H 5660 275 334 468 88 80 96 7744 252 306 429 96 88 MASONRY OPENING (L1) EFFECTIVE SPAN (L2) SEISMIC REINFORCEMENT 45° APEX AREA 233 283 396 104 96 112 7744 (1) #3 104 SUPERIMPOSED LOADS ABOVE APEX (NOT CARRIED BY LINTEL) 5660 303 368 515 80 72 88 (2) #4 Self Weight 42#/ft H=1/2 EFFECTIVE SPACE 7744 216 263 368 112 104 120 202 245 343 120 112 128 7744 (1) #5 7744 189 230 322 128 120 136 SEISMIC REINFORCING BOND BEAM (SEE SECTION) 7744 178 216 303 136 128 144 900 North Hartley Street, York, PA 17404 | 717.792.4700 | www.yorkbuilding.com SOLID LINTELS - 6" x 8" 8x8 SOLID LINTELS 32 4. Effective span L2 (inches) 5. Maximum allowable load Unfactored Typical Section: Width (W) = 7.625" Height (H) = 7.625" Eff. Depth (d) = H-1-1/2" 1/2" bar dia. Mn= 1/8 Wn (L2)2 Vn= 1/2 WnL2 max = Maximum allowable deflection = L2/360≤0.3" UL Fire Ratings 1-1/2 hour 2898 808 981 1374 40 32 48 2898 673 817 1144 48 40 56 2898 576 700 980 56 48 64 (2) #3 (2) #3 2898 505 613 858 64 58 72 4900 449 546 764 72 64 80 4900 403 490 686 80 72 88 367 445 H 4900 Hollow masonry block weights for determining uniform equivalent apex load on lintel: 8" block weight = 35 psf (Hollow) 12" block weight = 50 psf (Hollow) Equivalent load of apex area = .33 WL Effective span "L" of lintel (centerline of bearing to centerline of bearing). Weight of masonry block "W" PSF EXAMPLE Equivalent apex load for 8"X8" Lintel with effective span of 48" Apex Load = (.33) (W) (L) = .33 (35psf) (48"/12) = 46#FT Capacity of 8X8 lintel with effective span of 48" (from load table for live loads) = 1144#/FT Therefore, the lintel has significant excess capacity, if superimposed load is located within apex area, then refer to the load tables to ensure sufficient capacity. 88 80 96 624 (2) #4 Self Weight 56#/ft As a minimum, the lintels carry the apex area above the span. An example of the uniform equivalent apex load calculation follows. 2898 (ft.-lbs.) Design Data fx = 3,000 psi (minimum) fy = 60,000 psi (per ASTM-A615) Average weight per lineal foot of beam - 65 lbs Seismic Capability Design formulas as per ACI 318-12 Mn= Moment governed by ultimate strength = 0.9 (A 2)(f2)(d-a/2) Vn= Shear governed by ultimate strength 1013 (lbs/ft.) Live Load 6. Maximum bending moment capacity M1 1230 (lbs/ft.) Dead Load 1722 24 3. Masonry opening L1 (inches) (lbs/ft.) 40 Top Bottom 3,000 psi (Dry mix) 2. Nominal lintel length (inches) 1. Reinforcement rods (A 1) 4900 310 377 528 104 96 112 MASONRY OPENING (L1) EFFECTIVE SPAN (L2) SEISMIC REINFORCEMENT 45° APEX AREA SUPERIMPOSED LOADS ABOVE APEX (NOT CARRIED BY LINTEL) 4900 336 408 572 96 88 104 4900 288 350 490 112 104 120 4900 269 327 458 120 112 128 H=1/2 EFFECTIVE SPACE (2) #3 (2) #5 4900 252 305 428 128 120 136 BOND BEAM (SEE SECTION) SEISMIC REINFORCING 4900 237 288 404 136 128 144 900 North Hartley Street, York, PA 17404 | 717.792.4700 | www.yorkbuilding.com SOLID LINTELS - 8" x 8" 6x8 "U" LINTELS 1304 5896 (ft.-lbs.) 1583 (lbs/ft.) (lbs/ft.) 5896 978 1187 1663 32 24 40 5896 782 950 1330 40 32 48 Typical Section: Width (W) = 5-5/8" Height (H) = 7.625" Eff. Depth (d) = H-1-1/2" 1/2" bar dia. Mn= 1/8 Wn (L2)2 Vn= 1/2 WnL2 max = Maximum allowable deflection = L 2/360≤0.3" (9ft Lintel) UL Fire Ratings 1-1/2 hour Design Data fx = 5,000 psi (minimum) fy = 60,000 psi (per ASTM-A615) Average weight per lineal foot of beam - 50 lbs (Grouted Solid) Seismic Capability Design formulas as per ACI 318-12 Mn= Moment governed by ultimate strength = 0.9 (A 2)(f2)(d-a/2) Vn= Shear governed by ultimate strength Live Load 6. Maximum bending moment capacity M1 Dead Load 24 4. Effective span L2 (inches) 5. Maximum allowable load Unfactored 2217 16 3. Masonry opening L1 (inches) (lbs/ft.) 32 5896 680 826 1157 46 38 54 48 40 56 5896 651 791 1108 (2) #3 5896 559 679 950 56 48 64 489 593 831 64 58 72 447 544 760 70 62 78 428 528 739 72 64 80 411 500 700 76 68 84 385 475 665 80 72 88 (2) #5 382 464 650 82 74 90 356 432 605 88 80 96 (2) #3 334 404 566 94 86 102 325 395 554 96 88 104 313 380 532 100 92 108 300 365 511 104 96 112 295 358 502 106 98 114 279 339 475 112 104 120 260 316 443 120 112 128 252 306 429 124 116 132 (2) #3 245 297 416 128 120 136 230 279 391 136 128 144 H Equivalent load of apex area = .33 WL Effective span "L" of lintel (centerline of bearing to centerline of bearing). Weight of masonry block "W" PSF EXAMPLE Equivalent apex load for 6"X8" Lintel with effective span of 48" Apex Load = (.33) (W) (L) = .33 (35psf/2) (48"/12) = 20#FT Capacity of 6X8 lintel with effective span of 48" (from load table for live loads) = 2916#/FT Therefore, the lintel has significant excess capacity, if superimposed load is located within apex area, then refer to the load tables to ensure sufficient capacity. MASONRY OPENING (L1) EFFECTIVE SPAN (L2) SEISMIC REINFORCEMENT 45° APEX AREA SUPERIMPOSED LOADS ABOVE APEX (NOT CARRIED BY LINTEL) Hollow masonry block weights for determining uniform equivalent apex load on lintel: 6" block weight = 30 psf (Hollow) 12" block weight = 50 psf (Hollow) H=1/2 EFFECTIVE SPACE SEISMIC REINFORCING BOND BEAM (SEE SECTION) 5896 10434 10434 10434 10434 10434 10434 10434 10434 10434 10434 10434 10434 10434 15632 15632 15632 15632 539 655 917 58 50 66 Self Weight 34#/ft As a minimum, the lintels carry the apex area above the span. An example of the uniform equivalent apex load calculation follows. 5896 601 730 1023 52 44 60 5,000 psi PRECAST BOND BEAM LINTELS Top Bottom 2. Nominal lintel length (inches) 1. Reinforcement rods (A1) 900 North Hartley Street, York, PA 17404 | 717.792.4700 | www.yorkbuilding.com U- LINTELS - 6" x 8" 8x8 "U" LINTELS 24 (lbs/ft.) (lbs/ft.) 4. Effective span L2 (inches) 5. Maximum allowable load Unfactored Dead Load 1739 5896 (lbs/ft.) (ft.-lbs.) 2112 5896 1490 1810 2534 28 20 36 5896 1304 1583 2217 32 24 40 Typical Section: Width (W) = 7-5/8" Height (H) = 7.625" Eff. Depth (d) = H-1-1/2" 1/2" bar dia. Mn= 1/8 Wn (L2)2 Vn= 1/2 WnL2 max = Maximum allowable deflection = L2/360≤0.3" (9ft Lintel) UL Fire Ratings 1-1/2 hour Design Data fx = 5,000 psi (minimum) fy = 60,000 psi (per ASTM-A615) Average weight per lineal foot of beam - 65 lbs (Grouted Solid) Seismic Capability Design formulas as per ACI 318-12 Mn= Moment governed by ultimate strength = 0.9 (A 2)(f2)(d-a/2) Vn= Shear governed by ultimate strength Live Load 6. Maximum bending moment capacity M1 16 3. Masonry opening L1 (inches) 2957 32 5896 1227 1490 2087 34 26 42 5896 1024 1245 1744 40 32 48 5896 908 1102 1544 48 38 54 5896 869 1055 1478 48 40 56 5896 804 976 1367 52 44 60 5896 745 905 1267 56 48 64 652 792 1109 64 58 72 596 724 1014 70 62 78 579 703 985 72 64 80 (2) #5 549 667 934 76 68 84 522 634 887 80 72 88 509 618 865 82 74 90 474 576 806 88 80 96 (2) #3 444 539 755 94 86 102 435 528 739 96 88 104 417 507 710 100 92 108 401 487 682 104 96 112 393 478 669 106 98 114 373 453 634 112 104 120 347 422 591 120 112 128 336 408 572 124 116 132 (2) #3 326 396 554 128 120 136 307 373 522 136 128 144 Equivalent load of apex area = .33 WL Effective span "L" of lintel (centerline of bearing to centerline of bearing). Weight of masonry block "W" PSF EXAMPLE Equivalent apex load for 8"X8" Lintel with effective span of 48" Apex Load = (.33) (W) (L) = .33 (35psf) (48"/12) = 46#FT Capacity of 8X8 lintel with effective span of 48" (from load table for live loads) = 2988#/FT Therefore, the lintel has significant excess capacity, if superimposed load is located within apex area, then refer to the load tables to ensure sufficient capacity. H MASONRY OPENING (L1) EFFECTIVE SPAN (L2) SEISMIC REINFORCEMENT 45° APEX AREA SUPERIMPOSED LOADS ABOVE APEX (NOT CARRIED BY LINTEL) Hollow masonry block weights for determining uniform equivalent apex load on lintel: 8" block weight = 35 psf (Hollow) 12" block weight = 50 psf (Hollow) H=1/2 EFFECTIVE SPACE SEISMIC REINFORCING BOND BEAM (SEE SECTION) 5896 10434 10434 10434 10434 10434 10434 10434 10434 10434 10434 10434 10434 10434 15632 15632 15632 15632 719 874 1223 58 50 66 Self Weight 39#/ft As a minimum, the lintels carry the apex area above the span. An example of the uniform equivalent apex load calculation follows. 5896 1159 1408 1971 36 28 44 (2) #3 5,000 psi PRECAST BOND BEAM LINTELS Top Bottom 2. Nominal lintel length (inches) 1. Reinforcement rods (A1) 900 North Hartley Street, York, PA 17404 | 717.792.4700 | www.yorkbuilding.com U- LINTELS - 8" x 8" 10x8 "U" LINTELS 1659 2014 2820 32 24 1327 1611 2256 40 32 48 Mn= 1/8 Wn (L2)2 Vn= 1/2 WnL2 max = Maximum allowable deflection = L 2/360≤0.3" UL Fire Ratings 1-1/2 hour Design Data fx = 5,000 psi (minimum) fy = 60,000 psi (per ASTM-A615) Average self weight per lineal foot of beam - 83 lbs (Grouted Solid) Seismic Capability Design formulas as per ACI 318-12 Mn= Moment governed by ultimate strength = 0.9 (A 2)(f2)(d-a/2) Vn= Shear governed by ultimate strength Typical Section: Width (W) = 9-5/8" Height (H) = 7.625" Eff. Depth (d) = H-1-1/2" 1/2" bar dia. 1154 1440 1961 46 38 54 1106 1342 1880 48 40 56 1020 1239 1735 52 44 60 947 1150 1611 56 48 64 914 1110 1555 58 50 66 829 1007 1410 64 58 72 758 921 1289 70 62 78 737 895 1253 72 64 80 698 848 1187 76 68 84 Self Weight 55#/ft 664 805 1128 80 72 88 (2) #3 (2) #5 647 785 1100 82 74 90 603 732 1025 88 80 96 565 685 960 94 86 102 553 671 940 96 88 104 530 644 902 100 92 108 510 620 868 104 96 112 500 608 851 106 98 114 473 575 805 112 104 120 447 537 752 120 112 128 422 519 727 124 116 132 415 504 705 128 120 136 390 474 663 136 128 144 Equivalent load of apex area = .33 WL Effective span "L" of lintel (centerline of bearing to centerline of bearing). Weight of masonry block "W" PSF EXAMPLE Equivalent apex load for 10"X8" Lintel with effective span of 48" Apex Load = (.33) (W) (L) = .33 (60psf) (48"/12) = 80#FT Capacity of 10X8 lintel with effective span of 48" (from load table for live loads) = 1106#/FT Therefore, the lintel has significant excess capacity, if superimposed load is located within apex area, then refer to the load tables to ensure sufficient capacity. H MASONRY OPENING (L1) EFFECTIVE SPAN (L2) SEISMIC REINFORCEMENT 45° APEX AREA SUPERIMPOSED LOADS ABOVE APEX (NOT CARRIED BY LINTEL) Hollow masonry block weights for determining uniform equivalent apex load on lintel: 6" block weight = 30 psf (Hollow) 12" block weight = 50 psf (Hollow) As a minimum, the lintels carry the apex area above the span. An example of the uniform equivalent apex load calculation follows. H=1/2 EFFECTIVE SPACE SEISMIC REINFORCING BOND BEAM (SEE SECTION) 15680 15680 15680 15680 15680 15680 15680 15680 15680 15680 15680 15680 15680 15680 15680 15680 15680 15680 15680 15680 15680 15680 15680 15680 15680 2212 (lbs/ft.) (ft.-lbs.) 2685 (lbs/ft.) 24 4. Effective span L2 (inches) 5. Maximum allowable load Unfactored Factored Dead Load (1.4) Factored Live Load (1.7) 6. Maximum bending moment capacity M1 3760 16 3. Masonry opening L1 (inches) (lbs/ft.) 32 40 5,000 psi PRECAST BOND BEAM LINTELS Top Bottom 2. Nominal lintel length (inches) 1. Reinforcement rods (A1) 900 North Hartley Street, York, PA 17404 | 717.792.4700 | www.yorkbuilding.com U- LINTELS - 10" x 8" 12x8 "U" LINTELS 1956 2375 3326 32 24 1565 1900 2661 40 32 48 Mn= 1/8 Wn (L2)2 Vn= 1/2 WnL2 max = Maximum allowable deflection = L 2/360≤0.3" UL Fire Ratings 1-1/2 hour Design Data fx = 5,000 psi (minimum) fy = 60,000 psi (per ASTM-A615) Average self weight per lineal foot of beam - 100 lbs (Grouted Solid) Seismic Capability Design formulas as per ACI 318-12 Mn= Moment governed by ultimate strength = 0.9 (A 2)(f2)(d-a/2) Vn= Shear governed by ultimate strength Typical Section: Width (W) = 11-5/8" Height (H) = 7.625" Eff. Depth (d) = H-1-1/2" 1/2" bar dia. 1361 1652 2314 46 38 54 1304 1583 2217 48 40 56 1204 1462 2047 52 44 60 1117 1357 1900 56 48 64 1079 1311 1835 58 50 66 978 1188 1663 64 58 72 894 1086 1520 70 62 78 869 1056 1478 72 64 80 823 1000 1400 76 68 84 Self Weight 70#/ft 782 950 1330 80 72 88 (2) #3 (2) #5 763 927 1298 82 74 90 711 863 1209 88 80 96 665 808 1132 94 86 102 652 791 1108 96 88 104 626 760 1064 100 92 108 602 730 1023 104 96 112 590 717 1004 106 98 114 559 678 950 112 104 120 522 633 887 120 112 128 505 613 858 124 116 132 489 593 831 128 120 136 460 558 782 136 128 144 Equivalent load of apex area = .33 WL Effective span "L" of lintel (centerline of bearing to centerline of bearing). Weight of masonry block "W" PSF EXAMPLE Equivalent apex load for 12"X8" Lintel with effective span of 48" Apex Load = (.33) (W) (L) = .33 (60psf) (48"/12) = 80#FT Capacity of 12X8 lintel with effective span of 48" (from load table for live loads) = 3330#/FT Therefore, the lintel has significant excess capacity, if superimposed load is located within apex area, then refer to the load tables to ensure sufficient capacity. H MASONRY OPENING (L1) EFFECTIVE SPAN (L2) SEISMIC REINFORCEMENT 45° APEX AREA SUPERIMPOSED LOADS ABOVE APEX (NOT CARRIED BY LINTEL) Hollow masonry block weights for determining uniform equivalent apex load on lintel: 6" block weight = 30 psf (Hollow) 12" block weight = 50 psf (Hollow) As a minimum, the lintels carry the apex area above the span. An example of the uniform equivalent apex load calculation follows. H=1/2 EFFECTIVE SPACE SEISMIC REINFORCING BOND BEAM (SEE SECTION) 16000 16000 16000 16000 16000 16000 16000 16000 16000 16000 16000 16000 16000 16000 16000 16000 16000 16000 16000 16000 16000 16000 16000 16000 16000 2608 (lbs/ft.) (ft.-lbs.) 3167 (lbs/ft.) 24 4. Effective span L2 (inches) 5. Maximum allowable load Unfactored Factored Dead Load (1.4) Factored Live Load (1.7) 6. Maximum bending moment capacity M1 4435 16 3. Masonry opening L1 (inches) (lbs/ft.) 32 40 5,000 psi PRECAST BOND BEAM LINTELS Top Bottom 2. Nominal lintel length (inches) 1. Reinforcement rods (A1) 900 North Hartley Street, York, PA 17404 | 717.792.4700 | www.yorkbuilding.com U- LINTELS - 12" x 8" 900 North Hartley Street York, PA 17404 717.792.4700 www.yorkbuilding.com © 2016 York Building Products. All rights reserved. 040716-300-IH
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